LRF1222C 1535 nm Laser Rangefinder | Technical Details - GST inc

austarsmodel@yahoo.com (Austars Model Pty Ltd) — Fri, 06 Nov 2026 17:17:34 +0800

Detailed LRF1222C Specifications

The technical material below is retained for this model only. Do not transfer a range, pulse, interface, mechanical or safety value from another 1535 nm product.

Specifications

LRF1222C is a pulsed distance-measurement module in the 1535 nm product family. Its complete-module specification and source drawings are presented below, separate from general technical explanations.

1. LRF1222C module specifications

Source interface clarification

The source table places “RS422” under a multi-target-count heading; it is reported here as an interface, not a target count. The J30J table labels two supply contacts “VCC 5V” but describes their function as “12V Input Positive”. Those conflicting source labels are retained for traceability, not as wiring instructions. Use the confirmed connector record supplied with the ordered unit.

LRF1222C � TECHNICAL SPECIFICATIONS
Project	Performance Indicators
Model	LRF1222C
Laser Wavelength	1.54μm±0.02μm
Module laser-safety statement	Class I stated in the module document. Final accessible-emission classification applies to the complete configuration.
Divergence Angle	≤0.3 mrad
Laser Energy	≥300 μJ
Launch Lens Diameter	Φ16.5 mm
Receiver Lens Diameter	Φ40 mm
Measuring Range （Reflectance 30%; visibility ≥ 12 km.）	Reference target(2.3m×2.3m) ≥12 km
Minimum Range	≤40 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%
Connector / interface alternatives	J30J / RS-422 in the specification table; Molex 51021-0500 / TTL alternative in the interface section. Confirm the ordered version.
Supply Voltage	DC12 V
Standby power consumption	≤1.2W
Average power consumption	≤2 W
Peak Power Consumption	≤3W@10Hz
Weight	≤335g
Dimension (L×W×H)	Φ58 × 134 mm
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

LRF1222C � PIN INTERFACE
External plug-in XS3	Model：Molex51021-0500	Remark
1	TTL RX	3.3V
2	TTL TX	3.3V
3	CTRL	3.3V-5V power on, 0V power off
4	+12V	Power supply+
5	GND	Power supply-

LRF1222C � PIN INTERFACE
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

Austars-Model.com : RSS Product Feed :: LRF1222C 1535 nm Laser Rangefinder | Technical Details - GST inc

LRF1222C 1535 nm Laser Rangefinder | Technical Details - GST inc

Detailed LRF1222C Specifications

Specifications

1. LRF1222C module specifications

Source interface clarification

Model-specific mechanical and interface drawings