905nm Pulsed Laser Rangefinder Module
This semiconductor pulse laser rangefinder sensor has a laser wavelength of 905nm and a ranging capability of over 1200 meters.It utilizes MCU+ADC+FPGA technology,features a UART-TTL interface,and comes with accompanying testing software for easy further development by users.With a small size and a weight of only 20g,it offers high precision and stable performance,and is widely used in aviation,communication,geology,police services,and outdoor sports.
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FAQ
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Our skilled and friendly salesmen are ready to answer your questions about our products and services at any time, from product selection to application. Free technical consultation services are offered by request. Our experienced engineers are here to cooperate with you on your special requirements or OEM designs.
The specifications of our products are subject to change without notice. Please ask necessary questions before you order.
Laser products are warranted to conform to ERDI’ s published specifications and to be free from defects in materials and workman-ship for a period of twelve months starting on the shipping date. ERDI will repair or replace (at our decision) ASAP without charge, any part(s) found to be defective during the warranty period.
Our warranties do not cover damages due to misuse, negligence or accidents or due to installations, repairs or adjustments not authorized by ERD.
If a problem occurs and can’t be solved by phone, fax, or email, you may return products to ERDI. Please contact us for a Return Material Authorization (RMA) number prior to shipping the laser. We’ll provide you details on shipping and customs information with the RMA number. All lasers and components should be carefully packed to avoid damage during shipment.
TECHNICAL SPECIFICATIONS
Model | LRF1200A1 |
Laser Wavelength | 905nm |
Eye Safety | Class 1 |
Launch Lens Diameter | Φ6.6mm |
Receiver Lens Diameter | Φ18mm |
Measuring Range(building) | ≥5~1200m |
Ranging Accuracy | ±1m |
Display Accuracy | 0.1m |
Ranging Frequency | 1~3Hz |
Precision Rate | ≥98% |
False Alarm Rate | ≤1% |
Data Interface | UART(TTL_3.3V) |
Supply Voltage | DC 3~5 V |
Standby Power Consumption | ≤300mW |
Operating Power Consumption | ≤800mW |
Weight | 18g |
Dimention (L×W×H) | Ф23mmÍ48mm |
Operation Temperature | -40~+60℃ |
Storage Temperature | -55~+65℃ |
Impact Resistance | 1200 g,1 ms |
Anti-vibration | 5~50~5 Hz,1 Octave range /min,2.5 g |
Dependability | MTBF≥1500 h |
Activation Time | ≤500ms; |
Waterproof rating | Lens IP67 |
ESD Class | (Lens position) Contact discharge 6kV Air discharge 8kV |
Electromagnetic Compatibility (EMC) | CE/FCC Certification |
Eco-friendly | RoHS2.0 |
1. In this mode, the device consumes minimal power. The MCU is in an off state and does not respond to any commands. 2. When a measurement is needed, pull the enable pin low to switch the device into normal working mode and automatically perform one measurement. 3. After the measurement is complete, pull the enable pin high to return the device to low-power mode, with power consumption below 3mW. |
OUTLINE DIMENSION(mm)

PIN interface
User Electrical Interface: UART (TTL_3.3V)
Connector Model No.: FWF08002-S06B13W5M, wire sequence and specific definitions are shown below:

Pin | Definition | Illustrate |
1 | GND | Earth (wire) |
2 | Power supply | 3.3V DC power supply |
3 | NC | Empty pin |
4 | TTL_TXD | Serial transmitter, TTL level 3.3V |
5 | TTL_RXD | Serial Receiver, TTL Level 3.3V |
6 | Enable Pin | low level power on |