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905nm Laser Rangefinder Module with Visible Red Dot Indication 3~1200m

SPD1200N3

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905nm Laser Rangefinder Module with Visible Red Dot Indication 0.2~1200m 905nm Laser Rangefinder Module with Visible Red Dot Indication 0.2~1200m 905nm Laser Rangefinder Module with Visible Red Dot Indication 0.2~1200m 905nm Laser Rangefinder Module with Visible Red Dot Indication 0.2~1200m 905nm Laser Rangefinder Module with Visible Red Dot Indication 0.2~1200m 905nm Laser Rangefinder Module with Visible Red Dot Indication 0.2~1200m

PRODUCT DESCRIPTON

The ERDI LASER® SPD1200N3 is a 905nm laser rangefinder module with visible aiming laser, designed for applications that require precise target acquisition. It integrates a red dot pointer into a rugged aluminum housing, enabling clear visual aiming in outdoor environments. The module measures distances from 3 m to 1200 m and supports a standard UART-TTL interface, making it an ideal OEM rangefinder module for target indication and field measurement systems.

TECHNICAL PARAMETERS

Parameter

Specification

Laser wavelength

905 ±5 nm

Beam divergence

<6 mrad

Optical element type

Aspheric lens

Receive /transmit aperture

Ø6.5 mm

Measurement range

3–1000 m

Building target ;visibility ≥10 km;humidity ≤60%

Ranging accuracy

±0.5 m (d ≤100 m)
±(0.5 m + 0.00075d)
(100 m < d < 1000 m)

Measurement update rate

2.5–15 Hz

Measurement success rate

≥98%

False alarm rate

≤1%

Communication interface

UART ,3.3 V TTL;customizable

Baud rate

115200 bps default

Supply voltage

DC 3.3–5 V

Startup time

≤200 ms

Instantaneous startup current

≈200 mA

Standby power consumption

≤0.3 W

Average power consumption

≤0.5 W

Operating temperature

−20 to +60 °C

Storage temperature

−30 to +70 °C

Ingress protection

Lens cavity:IP67

Laser safety class

IEC Class 1

Dimensions /material

14.0 ×18.0 ×22.3 mm;rectangular

6061 aluminum alloy

Weight

≤6 g

d is the measured distance in meters.See the mechanical drawing for dimensions and tolerances.The IP67 rating applies to the lens cavity only. 

INTERFACE

Pin

Signal

Description

1

GND

Power supply ground

2

VCC

Positive supply input

3

IO (reserved)

Reserved for expansion

4

TXD

Signal output:module →host

5

RXD

Signal input:host →module

6

SW-SHOT

Function enable ,active-high (>1.2 V).

Lower-level requirements can be accommodated ;confirm the supplied configuration before use.

Information Download

  • PRODUCT DESCRIPTON

  • TECHNICAL PARAMETERS

  • INTERFACE

  • Information Download

The ERDI LASER® SPD1200N3 is a 905nm laser rangefinder module with visible aiming laser, designed for applications that require precise target acquisition. It integrates a red dot pointer into a rugged aluminum housing, enabling clear visual aiming in outdoor environments. The module measures distances from 3 m to 1200 m and supports a standard UART-TTL interface, making it an ideal OEM rangefinder module for target indication and field measurement systems.

Parameter

Specification

Laser wavelength

905 ±5 nm

Beam divergence

<6 mrad

Optical element type

Aspheric lens

Receive /transmit aperture

Ø6.5 mm

Measurement range

3–1000 m

Building target ;visibility ≥10 km;humidity ≤60%

Ranging accuracy

±0.5 m (d ≤100 m)
±(0.5 m + 0.00075d)
(100 m < d < 1000 m)

Measurement update rate

2.5–15 Hz

Measurement success rate

≥98%

False alarm rate

≤1%

Communication interface

UART ,3.3 V TTL;customizable

Baud rate

115200 bps default

Supply voltage

DC 3.3–5 V

Startup time

≤200 ms

Instantaneous startup current

≈200 mA

Standby power consumption

≤0.3 W

Average power consumption

≤0.5 W

Operating temperature

−20 to +60 °C

Storage temperature

−30 to +70 °C

Ingress protection

Lens cavity:IP67

Laser safety class

IEC Class 1

Dimensions /material

14.0 ×18.0 ×22.3 mm;rectangular

6061 aluminum alloy

Weight

≤6 g

d is the measured distance in meters.See the mechanical drawing for dimensions and tolerances.The IP67 rating applies to the lens cavity only. 

Pin

Signal

Description

1

GND

Power supply ground

2

VCC

Positive supply input

3

IO (reserved)

Reserved for expansion

4

TXD

Signal output:module →host

5

RXD

Signal input:host →module

6

SW-SHOT

Function enable ,active-high (>1.2 V).

Lower-level requirements can be accommodated ;confirm the supplied configuration before use.

Learn More

KEY ADVANTAGES
  • Visible Red Dot Indication:Built-in aiming laser allows users to see exactly where the beam is pointing, greatly improving targeting speed and accuracy.

  • Rugged Aluminum Housing:6061 aluminum alloy casing delivers excellent impact resistance and heat dissipation for harsh outdoor use.

  • Wide Measurement Range:Covers 0.2 m to 1200 m, suitable for both close-range and long-distance targeting.

  • Seamless OEM Integration:Supports UART-TTL communication and a compact footprint (14.0 × 18.0 × 22.3 mm) for easy embedding into handheld or fixed systems.

Applications
  • Outdoor surveying and mapping

  • Security and surveillance with target indication

  • Forestry and agricultural measurement

  • Power line inspection

  • OEM handheld devices requiring visible aiming laser

PRODUCT POSITIONING

Compared with the SPD1200N2 (rectangular, no pointer):

SPD1200N3 SPD1200N2
Visible Red Dot None
6061 Aluminum Alloy Compact / Transparent
OEM rangefinder module target indication, outdoor field use Flat-profile OEM integration
FAQ

Q: What is the advantage of the visible red dot?
A: It acts as a visible aiming laser, allowing the user to confirm the exact target point before measuring, which is especially useful for long-distance or outdoor use.

Q: Is this a 1000m laser rangefinder module with UART?
A: Yes, it supports UART-TTL communication and covers a range up to 1200 m, comfortably meeting 1000 m class requirements.

Q: Can it be integrated into handheld devices?
A: Yes, its compact size, lightweight aluminum housing, and UART interface make it suitable for handheld and portable OEM designs.

Q: Is the laser eye-safe?
A: Yes, it complies with IEC Class 1 safety standards.

Related product
-SPD1200N2
-SPD1200NO
-SPD1200S2G
-SPD1200Z2
-SPD Series Laser Rangefinder Comparison
Looking for a laser rangefinder module with integrated orientation sensing? Contact ERDI TECH for advanced spatial measurement solutions and customization support.


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