ERDI LASER® 905nm Laser Rangefinder Module Selection Guide for OEM Integration

Jun 4, 2026 RangeFinder ERDI

Introduction

ERDI 905nm Series Product Quick Selection Table

Requirement	Recommended Series
Lowest cost	A
Most universal OEM	D
Lightest 2000m	E
Ultra-short range 0.1m	SPD
Single-photon detection	SPD
Attitude + ranging	SPD1200S2G
Above 50Hz	VB/H
10kHz ultra-high frequency	H
Centimeter-level accuracy	VB/H
UAV gimbals	E/SPD1200S2G
Thermal weapon sights	A/E
Robot navigation	SPD
Industrial automation	VB/H

In the 21st century, laser rangefinder modules have become indispensable core sensing components in modern electro-optical systems, UAV gimbals, thermal imaging devices, intelligent surveillance platforms, robotics, and industrial automation equipment. Among various laser ranging technologies, 905nm laser rangefinder modules have become the preferred solution across industries due to their superior balance of performance, size, power consumption, integration flexibility, and cost-effectiveness.

According to industry research reports, 905nm laser rangefinder modules now account for over 70% of the global industrial laser ranging market. However, faced with a dizzying array of product models and inconsistent performance parameters, system integrators often encounter three major pain points: difficult selection, poor matching, and complex integration. They either end up with overpriced products with excessive performance or low-end products that fail to meet requirements, ultimately leading to project delays or cost overruns.

ERDI LASER®, a professional laser ranging solution provider with years of deep expertise in 905nm technology, offers one of the most comprehensive portfolios of 905nm laser rangefinder modules on the market. If you are developing:

UAV gimbals
Thermal imaging devices
Night vision systems
Border surveillance systems
Robotics
Surveying equipment
Industrial automation platforms

Then choosing the right 905nm laser rangefinder module is often more important than choosing a supplier. Ranging distance, refresh rate, size and weight, power consumption, ranging accuracy, and environmental adaptability all directly impact the final product performance. To help system integrators complete the selection process quickly, ERDI LASER® has compiled the most complete 905nm laser rangefinder module product matrix and provides recommended solutions based on actual project requirements.

This article will help you find the most suitable laser rangefinder module for your project in just a few minutes.

I. Core Technical Advantages of 905nm Laser Rangefinder Modules

ERDI LASER® 905nm laser rangefinder modules are mature semiconductor pulsed distance sensors designed for Direct Time-of-Flight (DToF/ToF) measurement. Compared with other wavelength solutions, 905nm systems offer higher integration flexibility and lower system barriers, making them particularly suitable for large-scale OEM integration and the most widely used laser ranging solution in industrial applications today.

ERDI's 905nm laser rangefinder modules integrate high-peak 905nm transmitters, precision receiver optics, and digital timing chains. Depending on the model and target reflectivity, they are divided into compact embedded modules, high-frequency laser rangefinder modules, and single-photon high-sensitivity ranging and spatial perception modules. With complete ranging capabilities from 0.05m to 2000m, a performance architecture spanning low power consumption to high frequency, and a technological upgrade from traditional ranging to single-photon perception, they are widely used in UAV gimbals, mobile robots, vehicle turrets, handheld instruments, EO/IR pods, and industrial automation.

1. Full Range Coverage (0.1 m – 2000 m)

ERDI's 905nm product system achieves complete coverage from short to long distances:

Standard compact embedded modules (A/B/C/D/E): 4 m – 2000 m
High-frequency laser rangefinder modules: 0.05 m – 1500 m
SPD single-photon modules: Minimum ranging as low as 0.1 m, covering 0.1 m – 1200 m

2. Lightweight and Highly Integrated Design

All 905nm modules feature a compact structure design, suitable for system integration in space-constrained scenarios:

Weight range: approximately 1 g – 23 g
Multiple structural forms: cylindrical / square / packaged design
Support for embedded installation and electro-optical system integration

3. Low Power Consumption Design

905nm laser rangefinder modules have significant advantages in power consumption control:

Average power consumption: approximately 0.45 W – 1.8 W
Standby power consumption as low as milliwatt level
Support for low-voltage (3.3V–5V) power supply

4. High Refresh Rate and Dynamic Measurement Capability

ERDI's 905nm products cover different levels of measurement frequency requirements:

Standard compact embedded modules
- A Series: 1–3 Hz (stable static measurement)
- B/C/D/E Series: 2–10 Hz adaptive (general industrial applications, maximum customizable 30Hz)
High-frequency laser rangefinder modules: 50Hz~10kHz (dynamic radar measurement)
SPD single-photon modules: 2~20Hz adaptive (single-photon level high-sensitivity ranging and spatial perception capability)

5. High Reliability and Stable Ranging Performance

Industrial-grade high reliability for harsh environments. All ERDI 905nm modules have undergone strict industrial reliability testing to ensure stable operation in various complex environments:

Ranging success rate ≥ 98%, false alarm rate ≤ 1% for stable and reliable data output
High-frequency H Series supports 100 kLux super strong ambient light immunity
MTBF ≥ 1500 hours, average mean time between failures exceeding 62 days
Passed 1000g/ms shock test and 2.5g vibration test
Operating temperature: -20°C to +60°C (some models can be extended to -40°C)

II. ERDI LASER® 905nm Product Family Overview

ERDI 905nm Product Family

Product Series	Typical Ranging Range	Standard Refresh Rate	Core Technical Features
A Series	1000-2000m	1-3Hz	Mature and stable, lowest cost
B Series	1000-1200m	2-10Hz	Cylindrical structure, industrial-grade reliability
C Series	1000m	3-10Hz	Rectangular compact, easy to integrate
D Series	600-1500m	3-12Hz	Universal OEM platform, widest coverage
E Series	1000-2000m	2-10Hz	Ultra-lightweight long range, ≤10g
SPD Series	0.1-1200m	2-20Hz	Single-photon detection, ultra-high sensitivity
High-Frequency VB/H Series	0.05-1500m	50Hz-10kHz	Ultra-high refresh rate, centimeter-level accuracy

A Series

B Series

LR1000B23

C Series

LR1000C3

D Series

E Series

SPD Series

High-Frequency Series

VB
- 20m
- 50m

- 50m
- 100m
- 200m
- 300m
- 600m
- 1500m

A Series – Mature and Stable Classic OEM Ranging Solution

The A Series is the earliest mass-produced 905nm ranging module from ERDI LASER® and one of the most mature and longest market-validated series in the current product system, with weight controlled at around 10g. This series includes:

with ranging capabilities covering 1000 m to 2000 m.

Compared with subsequent series, the biggest characteristics of the A Series are its mature stability and obvious cost advantages. Verified by long-term market applications, its reliable performance makes it suitable for mass OEM projects and traditional electro-optical equipment integration. For customers pursuing stability rather than extreme performance, the A Series still offers high cost-effectiveness.

However, the A Series also reflects obvious era characteristics. Its minimum ranging distance is usually 5 meters, and the refresh rate is only 1Hz to 3Hz, making it more suitable for static target observation or low-dynamic application scenarios. For applications requiring high refresh rates such as UAV obstacle avoidance and robot navigation, subsequent series are more recommended. Overall, the A Series is very suitable for applications such as traditional laser rangefinders, surveying equipment, observation and aiming systems, and long-distance monitoring equipment.

Take ERDI's thermal weapon sight as an example, which uses the A Series LRF2000A module paired with a 640×512 VOx infrared detector, 50mm F1.0 lens, and 1024×768 AMOLED display, delivering excellent imaging and target recognition capabilities in outdoor environments at an extremely high cost-performance ratio.

B/C Series – 1000m Industrial Application Modules with Different Structural Designs

The B Series is mainly represented by LR1000B23, adopting a classic 23mm cylindrical structure design with a weight of 20g.

The C Series is mainly represented by LR1000C3, adopting a rectangular structure design with a weight controlled at 16g.

Compared with the A Series, the B/C Series further optimizes power consumption and ranging frequency (2~10Hz, maximum customizable 30Hz), while differing in external dimensions and installation methods to meet the OEM needs of different systems.

D Series – 600m~1500m Cylindrical Structure OEM Modules

The D Series is one of the most widely used 905nm product series from ERDI currently, adopting a 23mm cylindrical structure design with a weight controlled at 20g. It has lower power consumption and a wider ranging range, with main models including:

covering almost all common ranging requirements. For most OEM projects, the D Series can often directly meet the needs without additional custom development. From a practical application perspective, the D Series is currently the most suitable product series for promotion as a universal OEM platform, with corresponding models available for UAV payloads, border surveillance equipment, thermal imaging systems, and industrial measurement equipment.

E Series – 1000m~2000m Rectangular High-Performance Miniaturized Modules

The E Series is a rectangular ranging module that combines lightweight and high performance. While maintaining the lightweight design of the A Series, it has the high frequency and 2km long-distance ranging capabilities of the B/C/D Series, with a weight controlled at 10g. Main models include:

covering a ranging range of 1000m~2000m. Among them, the LR2000E2, as the flagship model of the E Series, has a maximum ranging capability of 2000 meters, which has strong competitiveness among similar miniaturized 905nm ranging modules.

SPD Series – Single-Photon Technology Opens a New Generation of 905nm Ranging Platform

For a long time, the vast majority of 905nm laser ranging modules have adopted Avalanche Photodiode (APD) reception technology, a solution that has become highly mature through long-term practical application. However, with the development of emerging applications such as intelligent sensing and spatial positioning, traditional APD reception solutions are facing new challenges.

Traditional APD reception schemes require a sufficiently strong echo signal to achieve stable ranging. This means that target reflectivity, ambient light intensity, and the background surrounding the target all directly impact ranging performance. Particularly in complex environments such as forests, shrubs, and urban building complexes, echo signals are significantly attenuated, leading to a corresponding decline in ranging stability and success rate.

In response to this challenge, ERDI has launched the SPD series of 905nm ranging modules. The design focus of the SPD series is not on traditional long-range high-precision measurement—with a maximum ranging distance of 1200m—but rather on high sensitivity, high dynamic response, and fine-grained perception capability in complex environments. Its core advantages are as follows:

(1) Single-Photon Level Detection Capability (Single-Photon Sensitive Architecture)

In terms of reception method, the SPD series employs single-photon detection technology, which can perceive extremely weak echo energy down to the single-photon level. This means the system can still obtain clear and reliable echo information when facing low-reflectivity targets, long-range small targets, and complex background environments, thereby significantly improving ranging success rate and environmental adaptability. This is precisely the core value of single-photon detection technology.

(2) Short-Range Ranging Capability (Starting from 0.1 m)

Compared with traditional 905nm ranging modules that typically start measuring from 4-5 meters, the SPD series reduces the minimum ranging distance to 0.1-0.2 meters, making it suitable for close-range perception and spatial modeling, with a maximum ranging frequency of 20Hz.

(3) High-Precision Spatial Measurement Capability

The SPD series delivers superior ranging stability in short-range scenarios, with accuracy consistently maintained at ±0.2 m to ±0.3 m. The SPD1200S2G model is additionally equipped with a gyroscope function, providing both distance information and spatial attitude information simultaneously. This makes it particularly suitable for UAV mapping, 3D positioning, and intelligent observation systems.

From an industry development perspective, laser ranging technology is gradually evolving from a "distance measurement tool" to a "spatial perception sensor," and single-photon detection technology is a critical foundation driving this transformation. For this reason, the SPD series is more than just a high-performance 905nm laser ranging module—it represents the development direction of future intelligent perception platforms.

Model Number	Core Differentiator	Ranging Range	Core Accuracy	Weight	Form Factor	Unique Key Feature	Typical Application
SPD1200H2	Entry-level ultra-light high-precision model	0.2m – 1200m (Max 1500m at night)	±0.3m @ ≤100m	≤6g	Cylindrical	2Hz – 15Hz adaptive ranging frequency, low power consumption	UAV, industrial OEM integration
SPD1200Z2	High-frequency high-precision model	0.2m – 1200m (Max 1500m at night)	±0.2m @ ≤200m	≈6g	Rectangular	2Hz – 20Hz adaptive frequency, optional baud rate	High-speed UAV, AGV, fast-moving robot
SPD1200N0	Small divergence angle ultra-light sealed model	0.2m – 1200m (Max 1500m at night)	±0.3m @ ≤100m	≈5g	Cylindrical with sealing groove	＜4.5mrad ultra-narrow laser beam, dual-gear adaptive frequency	Outdoor surveillance, EO payload, harsh environment
SPD1200N2	Small divergence angle PMMA lens compact model	0.2m – 1200m (Max 1500m at night)	±0.3m @ ≤100m	≈5g	Rectangular	＜4.5mrad narrow beam, PMMA optical lens, wide temperature stability	Compact space integration, industrial IoT, miniaturized devices
SPD1200S2	Super close-range high-precision industrial model	0.1m – 1200m (Max 1400m)	±0.2m @ ≤400m	≈10g	Square	0.1m ultra-short minimum ranging distance, 2Hz – 20Hz adaptive frequency	Close-range precision measurement, robotics, industrial automation
SPD1200S2G	Gyroscope-equipped EO payload dedicated model	0.1m – 1200m (Max 1400m)	±0.2m @ ≤400m	≈10g	Square	Built-in gyroscope, Euler angle measurement, spatial two-point distance solving	EO payload, photoelectric pod, dynamic ranging system

High-Frequency Laser Rangefinder Modules – High-Speed Dynamic Measurement, Centimeter-Level Precision Perception

The high-frequency 905nm laser rangefinder module is a new generation of industrial-grade product line created specifically for high-speed dynamic measurement and centimeter-level precision perception. It covers the full range from 0.05m to 1500m, with a maximum ranging frequency of up to 10kHz, making it one of the series with the widest frequency coverage and highest accuracy among similar products on the market.

This series is divided into two sub-series: the VB Series (ultra-lightweight low-power type) and the H Series (industrial-grade high-frequency type), all using Direct Time-of-Flight (DToF) technology. Compared with other series, the modules in this series feature:

50Hz~10kHz ultra-high frequency coverage
0.05m ultra-short minimum ranging, centimeter-level high accuracy
100KLux super strong ambient light immunity for all-weather stable operation
UART/IIC communication interface, compatible with various systems
1g to 1.5g lightweight design with industrial-grade shock and vibration resistance

VB Series

Wavelength	905nm	905nm
Module	LRF22VB	LRF50VB
Measuring Range	0.05m～20m (90%reflectivity) 0.05m～10m (10%reflectivity)	0.05m～50m (90%reflectivity) 0.05m～20m (10%reflectivity)
Frequency	200Hz (Alternative100/50/20/10/1Hz）	100Hz
Accuracy	±5cm (<5m ) 1% (≥5m)	±5cm (<5m ) 1% (≥5m)
Ambient Light Immunity	8m@60KLux	10m@60KLux
Supply Voltage	3 ~ 3.6VDC	3.3~5VDC
Communication Interface	UART/IIC	UART/IIC
Dimension	21x 15 x 7.43 mm	18.7 x 11.8 x 13.3mm
Weight	1.5g	1.3g
Operating Temperature	-20℃ ~ +60℃	-20℃ ~ +60℃

H Series

Wavelength	905nm	905nm	905nm	905nm	905nm	905nm
Module	LRF50H	LRF100H	LRF200H	LRF300H	LRF600H	LRF1500H
Measuring Range	0.05m～50m (90%reflectivity) 0.05m～15m (10%reflectivity)	0.05m～100m (90%reflectivity) 0.05m～30m (10%reflectivity)	0.05m～200m (90%reflectivity) 0.05m～70m (10%reflectivity)	0.05m～300m (90%reflectivity) 0.05m～100m (10%reflectivity)	0.05m～600m (90%reflectivity) 0.05m～200m (10%reflectivity)	0.05m～1500m (90%reflectivity) 0.05m～300m (10%reflectivity)
Frequency	20Hz～10KHz (Default: 1KHz)	20Hz～10KHz (Default: 1KHz)	20Hz～10KHz (Default: 1KHz)	1KHz or 50Hz (Switch automatically to match the intensity of reflected signals)	1KHz or 50Hz (Switch automatically to match the intensity of reflected signals)	1KHz or 50Hz (Switch automatically to match the intensity of reflected signals)
Accuracy	±5cm(＜10m) , 1%(≥10m)(2σ)	±10cm (<10m), 1% (≥10m)	±10cm (<10m), 1% (≥10m)	±10cm (<10m), 1% (≥10m)	±10cm (<10m), 1% (≥10m)	±10cm (<10m), 1% (≥10m)
Ambient Light Immunity	45m@100KLux2	100KLux	100KLux	100KLux	100KLux	100KLux
Supply Voltage	9~36VDC	9 ~ 36VDC	9 ~ 36VDC	9 ~ 36VDC	9 ~ 36VDC	9 ~ 36VDC
Communication Interface	UART	UART/IIC	UART/IIC	UART/IIC	UART/IIC	UART/IIC
Dimension	38 x 20 x 30 mm	33 x 34 x 18 mm	33 x 34 x 18 mm	33 x 34 x 18 mm	33 x 34 x 18 mm	33 x 34 x 18 mm
Weight	15±2g	20±2g	20±2g	20±2g	20±2g	20±2g
Operating Temperature	-20℃~+60℃ （No condensation，indicator red light automatically turns off when under -20℃）	-20℃ ~ +60℃	-20℃ ~ +60℃	-20℃ ~ +60℃	-20℃ ~ +60℃	-20℃ ~ +60℃

III. How to Select

Ranging Distance Selection (It is recommended to maintain a certain margin based on the required ranging range)

Requirement	Recommended Model
20m	LRF22VB
50m	LRF50VB/LRF50H
100m	LRF100H
200m	LRF200H
300m	LRF300H
600m	LRF600H/LR600D23
1000m	LRF1000A/LR1000B23/LR1000C3/LR1000D23
1200m	LRF1200A1/LR1200D23/LR1200E2/SPD Series
1500m	LRF1500A/LR1500D23/LR1500E2
2000m	LRF2000A/LR2000E2

Accuracy Selection

Centimeter-Level Accuracy (±5cm~±10cm)

Only choice: High-Frequency VB/H Series

VB Series: ±5cm (<5m) + 1% (≥5m)
H Series: ±5cm~±10cm (<10m) + 1% (≥10m)

Sub-Meter Level Accuracy (±0.2m~±0.3m)

First choice: SPD Single-Photon Series

SPD1200H2/N0/N2/S2: ±0.3m (@≤100m)
SPD1200Z2/S2G: ±0.2m (@≤200m/400m)

Meter-Level Accuracy (±1m)

First choice: Classic A/B/C/D/E Series

All series have ±1m level accuracy, with some models supporting segmented accuracy

Frequency Selection

Low frequency (1~3Hz): A Series, covering 1000m~2000m ranging
Medium frequency (2~20Hz): B/C/D/E/SPD Series, covering 600m~2000m ranging
High frequency (50Hz~10KHz): High-Frequency LRFVB/H Series, covering 10m~1500m ranging

Size and Weight Selection

(<2g) Choice: High-Frequency VB Series, 10~50m short-distance measurement

LRF10VB: 1g, 12×7.5×9.1mm
LRF22VB: 1.5g, 21×15×7.43mm
LRF50VB: 1.3g, 18.7×11.8×13.3mm

(2g~10g) First choice: SPD Single-Photon Series, 1200m ranging capability, OEM module with both size and performance

SPD1200N0 (cylindrical)/N2 (square): ≈5g
SPD1200H2 (cylindrical)/Z2 (rectangular): ≤6g
SPD1200S2/S2G (square): ≈10g

Second choice: E Series, 1000m~2000m square ranging module, weighing only 10g, adaptable to integration requirements of different ranging ranges.

Alternative: A Series LRF1000A module, low-frequency ranging within 1000m, cylindrical design, 0.7cm short-distance accuracy.

(10g~20g) First choice: High-Frequency H Series, maximum 10KHz high-frequency ranging, 100KLux environmental adaptability

LRF50H: 15±2g
LRF100H~LRF1500H: 20±2g

Second choice: Classic B/C/D Series

Alternative: A Series low-frequency series, meter-level ranging accuracy, 5m minimum ranging, high cost-performance choice

Application Scenario Selection

Classic A Series: Lowest cost mature long-range solution, designed for static mass OEM
Classic B/C Series: 1000m standard industrial models, providing both cylindrical and rectangular structure options
Classic D Series: Universal OEM benchmark, balancing performance and cost, covering most standard industrial needs
Classic E Series: The only series focusing on ≤10g ultra-light + 2000m long range, designed for mid-to-high-end lightweight long-distance equipment
SPD Single-Photon Series: The only series focusing on single-photon high sensitivity + 0.1m short range + sub-meter level accuracy, designed for high-end perception in complex environments
High-Frequency VB Series: The only series focusing on 1g level ultra-lightweight + 0.05m ultra-short range, designed for micro battery-powered devices
High-Frequency H Series: The only series focusing on 10kHz ultra-high frequency + centimeter-level accuracy + 100KLux anti-glare, designed for high-speed industrial dynamic scenarios

Recommended Models for UAV Gimbals (EO/IR Gimbal)

UAV electro-optical gimbals usually integrate visible light cameras, infrared thermal imagers, laser rangefinders, target positioning and other systems, putting forward requirements on the size, distance and reliability of the ranging module. The two long-range modules in the E Series weigh only 10g, achieving 1500m~2000m ranging capability while maintaining lightweight, making them very suitable for small and medium-sized UAV platforms.

For systems requiring target positioning and spatial coordinate calculation, the SPD1200S2G is currently the only ranging + attitude integrated module on the market that can be made within 10g, weighing less than half of a separate rangefinder plus gyroscope combination; the LR1500D23 is more suitable for large industrial UAVs, with a more robust structure and more suitable for OEM integration solutions.

Recommended Models for Thermal Weapon Sights and Night Vision Observation Equipment

The requirements for ranging modules in thermal weapon sights and night vision devices are focused on stability, power consumption, size and impact resistance. The two modules in the A Series have been verified by long-term market applications and are very suitable for traditional thermal imaging ranging systems. If the device pursues lightweight and better user experience, the E Series is recommended. As evidenced by multiple ERDI thermal imaging products, both A Series and E Series ranging modules are used.

Recommended Models for Handheld Laser Rangefinders

The D Series is currently the most cost-effective OEM platform in ERDI's series, with mature structure, stable supply, and ranging capability covering 600m~1500m, making it the most common choice for handheld rangefinder development.

Recommended Models for Robot Navigation, UAV Obstacle Avoidance and Intelligent Perception

With its 0.1/0.2m minimum ranging and 1200m level ranging capability, the SPD Series has stronger recognition ability for weak reflection targets, complex backgrounds and low signal-to-noise ratio environments compared with traditional APD receiver solutions, making it more suitable for modern mobile robots and unmanned system applications. It is the first choice for AGVs, AMRs, unmanned inspection robots, UAV obstacle avoidance systems and intelligent perception platforms.

Especially in scenarios such as woods, urban environments, and complex building surroundings, the SPD Series can demonstrate significantly better environmental adaptability than traditional ranging modules. In addition, if the system has the need to obtain azimuth, pitch and attitude information to calculate the actual spatial coordinates of the target, the SPD1200S2G model can be selected. The module integrates laser ranging, gyroscope and attitude measurement functions on a single platform, which can directly output spatial measurement data, greatly reducing the number of peripheral sensors and system complexity. For EO tracking systems, border surveillance equipment, observation towers and tactical target positioning platforms, it can significantly shorten the development cycle and improve system reliability.

Recommended Models for High-Speed Industrial Measurement and Dynamic Control Systems

High-Frequency VB/H Series

If the SPD Series solves the "perception capability" problem, then the high-frequency VB/H Series solves the "real-time performance" problem. Traditional ranging modules can only complete a few or even a dozen measurements per second, while the VB/H Series can achieve a maximum measurement frequency of 10kHz, equivalent to 10,000 distance updates per second. This capability makes it more like an industrial sensor than just an ordinary laser rangefinder. In high-speed conveyor belt sorting at speeds above 10 meters per second, micron-level vibration monitoring of machine tool spindles, dynamic displacement measurement, automatic control systems and industrial robotics, distance changes often occur at the millisecond or even microsecond level. At this point, the performance of the system is no longer determined by the ranging distance, but by the data refresh rate and feedback delay.

The VB Series, with its 1-gram ultra-light weight, is more suitable for embedding in devices with extremely limited space; the H Series further enhances the anti-ambient light capability and industrial reliability, maintaining stable operation even in 100KLux strong light environments.

IV. Conclusion

From years of experience, there is no best ranging module, only the most suitable one. For more than a decade, ERDI LASER® has helped UAV manufacturers, thermal imaging companies, robotics developers and industrial automation integrators deploy reliable laser ranging solutions worldwide. Whether your priority is cost, size, sensitivity, refresh rate or ranging distance, our engineering team can help you identify the optimal module for your application.

Need help choosing the right 905nm laser rangefinder module? ERDI LASER® provides:

✓ OEM/ODM custom services

✓ UART / TTL interface support

✓ Sample evaluation support

✓ Technical selection guidance

✓ UAV and EO system integration experience

If you are not sure which module is best for your project, just tell us:

Target distance
Target size
Installation space
Update frequency requirement
Working environment

Our engineering team will recommend the most suitable solution for you within 24 hours.

Contact Form

Email: yeva@erditechs.com

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Frequently Asked Questions (FAQ)

What is a 905nm laser rangefinder module?

A 905nm laser rangefinder module is a compact distance measurement sensor that uses a 905nm pulsed laser and Direct Time-of-Flight (DToF) technology to calculate the distance between the sensor and a target. Due to its excellent balance of performance, size, power consumption, and cost, 905nm technology has become the most widely adopted laser ranging solution for UAVs, thermal imaging systems, robotics, industrial automation equipment, and electro-optical platforms.

What is the maximum range of a 905nm laser rangefinder module?

The maximum ranging distance depends on the module design, target reflectivity, and environmental conditions. ERDI's 905nm laser rangefinder portfolio covers applications from ultra-short-range sensing at 0.05m to long-range measurement up to 2000m. Models such as the LRF2000A and LR2000E2 are designed for long-distance electro-optical observation and surveillance systems.

Which 905nm laser rangefinder module is best for UAV gimbals?

For most UAV EO/IR gimbal applications, the LR1500E2 and LR2000E2 are recommended because they combine long-range performance with an ultra-lightweight design of approximately 10g. For advanced target location systems requiring distance and attitude information simultaneously, the SPD1200S2G offers integrated laser ranging and gyroscope functions within a single compact module.

What is the difference between APD and Single Photon Detection (SPD)?

Traditional laser rangefinder modules typically use Avalanche Photodiode (APD) receivers, which provide reliable performance for standard ranging tasks. Single Photon Detection (SPD) technology is significantly more sensitive and can detect extremely weak return signals. This allows SPD modules to perform better in low-reflectivity environments, cluttered backgrounds, forests, urban areas, and other challenging scenarios where conventional APD-based systems may struggle.

Which laser rangefinder module supports ultra-short-distance measurement?

For applications requiring measurement below one meter, the SPD Series is the preferred solution. Models such as SPD1200S2 and SPD1200S2G can measure distances starting from 0.1m, making them suitable for robotics, obstacle avoidance, autonomous navigation, intelligent sensing, and precision industrial positioning systems.

Which ERDI laser rangefinder module provides the highest measurement frequency?

The High-Frequency H Series offers the highest measurement frequency in the ERDI product portfolio. Depending on the model, ranging frequencies can reach up to 10kHz, equivalent to 10,000 distance measurements per second. This makes the H Series particularly suitable for dynamic motion tracking, industrial automation, vibration monitoring, high-speed sorting systems, and real-time control applications.

Which laser rangefinder module provides centimeter-level accuracy?

The VB Series and H Series are designed for applications requiring centimeter-level ranging accuracy. Typical accuracy reaches ±5cm to ±10cm at short distances, making these modules ideal for industrial measurement, automated equipment, robotics, and precision positioning systems where rapid and accurate distance feedback is essential.

Which laser rangefinder module is best for robot navigation and obstacle avoidance?

For autonomous mobile robots (AMRs), AGVs, UAV obstacle avoidance systems, and intelligent perception platforms, the SPD Series is generally the preferred choice. Its 0.1m minimum ranging capability, high sensitivity, and strong performance in low-reflectivity environments enable reliable operation in complex indoor and outdoor scenarios.

Which laser rangefinder module supports attitude measurement and target location?

The SPD1200S2G is ERDI's dedicated ranging and attitude measurement solution. In addition to distance measurement, it integrates a gyroscope capable of providing Euler angle information, allowing the system to calculate target coordinates and spatial positioning data. This makes it highly suitable for EO/IR payloads, surveillance towers, observation systems, and target location platforms.

Can ERDI provide OEM and ODM customization?

Yes. ERDI LASER® provides comprehensive OEM and ODM services for system integrators and equipment manufacturers. Customization options include ranging distance, communication interface, mechanical structure, optical configuration, firmware protocols, environmental specifications, and platform integration support. Engineering teams can also provide application-specific recommendations based on target size, operating environment, installation space, and update frequency requirements.

How do I choose the right laser rangefinder module for my project?

The selection process should consider several factors simultaneously, including required ranging distance, target size, installation space, refresh rate, accuracy requirements, and operating environment. In general, A Series focuses on cost-effective long-range measurement, D Series serves as a universal OEM solution, E Series prioritizes lightweight long-range integration, SPD Series targets advanced perception applications, and VB/H Series focuses on high-speed dynamic measurement and industrial automation.

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