1535nm Laser Ranging Module 12km
We provide a 1-year warranty on all devices, complemented by lifetime technical after-sales assistance to ensure long-term operational efficiency for your business.
DESCRIPTION
The LRF1221C-02 laser rangefinder module utilizes 1535nm eye-safe laser (Class 1 IEC 60825-1) with an uncased design, lightweight (≤285g), and energy efficiency (standby power ≤1.2W). This product is suitable for long-distance differential ranging, and the minimum ranging distance should not be less than 50m.
TECHNICAL SPECIFICATIONS
| 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 |
OUTLINE DIMENSION(mm)
PIN 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 |
