DPSS Laser Rangefinder Module 1535nm - 12km
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PRODUCT DESCRIPTON
The ERDI LASER® LRF1221C is a long-range laser rangefinder module built on a 300 μJ 1535 nm erbium-glass laser, offering Class 1 eye-safe performance. Its uncased, lightweight, low-power design (standby ≤1.2 W) and wide operating temperature range ensure reliable performance in harsh environments. With built-in TTL/RS422 interfaces and embedded software, it supports rapid integration for border surveillance, UAVs, handheld devices, and electro-optical systems, offering ±2 m accuracy.
Key Advantages
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Long-Range Performance – Achieves ≥12 km ranging (30% reflectivity), with ±2 m accuracy and stable results across harsh environments.
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Flexible System Integration – Supports TTL/RS422 interfaces, Molex connectors, and embedded APIs for rapid development.
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Intelligent Measurement Functions – Multi-target detection, range gating, self-diagnostics, and target indication enhance operational reliability.
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Compact & Rugged Design – Lightweight uncased structure, low power usage, and MIL-STD-810G compliance ensure strong field durability.
TECHNICAL PARAMETERS
| Project | Performance Indicators |
| Model | LRF1221C |
| Laser Wavelength | 1.54μm±0.02μm |
| Eye- safety | Class Ⅰ |
| Divergence Angle | ≤0.3 mrad |
| Laser Energy | ≥300 μJ |
| Launch Lens Diameter | Φ12 mm |
| Receiver Lens Diameter | Φ40 mm |
| Measuring Range
（Reflectance 30%; visibility ≥15km.） |
4m × 6m Objective ≥12 km |
| Minimum Range | ≤50 m |
| Ranging Frequency | 0.5Hz ~10Hz |
| Communication interface | RS422 |
| Ranging Accuracy | ±2 m |
| Range Resolution | ≤0.1 m |
| Precision Rate | ≥98% |
| False Alarm Rate | ≤1% |
| Pin-in-lead package model | J30J |
| Supply Voltage | DC12 V |
| Standby power consumption | ≤1.2W |
| Average power consumption | ≤2 W |
| Peak Power Consumption | ≤3W@10Hz |
| Weight | ≤275g |
| Dimension (L×W×H) | 107×62×72mm |
| Operating Temperature | -40～+70 ℃ |
| Storage Temperature | -55～+75 ℃ |
| Impact Resistance | Meet the MIL-STD-810G testing standard |
| Vibration Resistance | Meet the MIL-STD-810G testing standard |
DIMENSION(mm)
INTERFACE
Electrical connector model: J30J; The corresponding plug and cable shall be provided by Party B. The detailed definition of the electrical interface is shown in the following table:
Interface Definition
| Pin | Definition | Function | Remarks |
| 1 | GND | Serial Port Ground | |
| 2 | GND | 12V Input Negative | |
| 3 | GND | 12V Input Negative | |
| 4 | VCC 5V | 12V Input Positive | |
| 5 | VCC 5V | 12V Input Positive | |
| 6 | RS422 RX+ | Serial Port Receive + | From the upper computer to the rangefinder |
| 7 | RS422 RX- | Serial Port Receive - | From the upper computer to the rangefinder |
| 8 | RS422 TX- | Serial Port Transmit - | From the rangefinder to the upper computer |
| 9 | RS422 TX+ | Serial Port Transmit + | From the rangefinder to the upper computer |
Information Download
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PRODUCT DESCRIPTON
-
TECHNICAL PARAMETERS
-
DIMENSION(mm)
-
INTERFACE
-
Information Download
The ERDI LASER® LRF1221C is a long-range laser rangefinder module built on a 300 μJ 1535 nm erbium-glass laser, offering Class 1 eye-safe performance. Its uncased, lightweight, low-power design (standby ≤1.2 W) and wide operating temperature range ensure reliable performance in harsh environments. With built-in TTL/RS422 interfaces and embedded software, it supports rapid integration for border surveillance, UAVs, handheld devices, and electro-optical systems, offering ±2 m accuracy.
Key Advantages
-
Long-Range Performance – Achieves ≥12 km ranging (30% reflectivity), with ±2 m accuracy and stable results across harsh environments.
-
Flexible System Integration – Supports TTL/RS422 interfaces, Molex connectors, and embedded APIs for rapid development.
-
Intelligent Measurement Functions – Multi-target detection, range gating, self-diagnostics, and target indication enhance operational reliability.
-
Compact & Rugged Design – Lightweight uncased structure, low power usage, and MIL-STD-810G compliance ensure strong field durability.
| Project | Performance Indicators |
| Model | LRF1221C |
| Laser Wavelength | 1.54μm±0.02μm |
| Eye- safety | Class Ⅰ |
| Divergence Angle | ≤0.3 mrad |
| Laser Energy | ≥300 μJ |
| Launch Lens Diameter | Φ12 mm |
| Receiver Lens Diameter | Φ40 mm |
| Measuring Range
（Reflectance 30%; visibility ≥15km.） |
4m × 6m Objective ≥12 km |
| Minimum Range | ≤50 m |
| Ranging Frequency | 0.5Hz ~10Hz |
| Communication interface | RS422 |
| Ranging Accuracy | ±2 m |
| Range Resolution | ≤0.1 m |
| Precision Rate | ≥98% |
| False Alarm Rate | ≤1% |
| Pin-in-lead package model | J30J |
| Supply Voltage | DC12 V |
| Standby power consumption | ≤1.2W |
| Average power consumption | ≤2 W |
| Peak Power Consumption | ≤3W@10Hz |
| Weight | ≤275g |
| Dimension (L×W×H) | 107×62×72mm |
| Operating Temperature | -40～+70 ℃ |
| Storage Temperature | -55～+75 ℃ |
| Impact Resistance | Meet the MIL-STD-810G testing standard |
| Vibration Resistance | Meet the MIL-STD-810G testing standard |
Electrical connector model: J30J; The corresponding plug and cable shall be provided by Party B. The detailed definition of the electrical interface is shown in the following table:
Interface Definition
| Pin | Definition | Function | Remarks |
| 1 | GND | Serial Port Ground | |
| 2 | GND | 12V Input Negative | |
| 3 | GND | 12V Input Negative | |
| 4 | VCC 5V | 12V Input Positive | |
| 5 | VCC 5V | 12V Input Positive | |
| 6 | RS422 RX+ | Serial Port Receive + | From the upper computer to the rangefinder |
| 7 | RS422 RX- | Serial Port Receive - | From the upper computer to the rangefinder |
| 8 | RS422 TX- | Serial Port Transmit - | From the rangefinder to the upper computer |
| 9 | RS422 TX+ | Serial Port Transmit + | From the rangefinder to the upper computer |