CX-CJ-3KM Laser Rangefinder Module

The CX-CJ-3KM is a laser rangefinder module operating at 1535 ± 5 nm, with a TTL interface and a measurement rate of 1–10 Hz. The published range capability is ≥3 km under visibility ≥8 km, target reflectivity ≥0.3 and humidity ≤80%.

Specifications

CX-CJ-3KM laser rangefinder module

Technical specifications

Ranging capability	≥3 km under visibility ≥8 km, target reflectivity ≥0.3 and humidity ≤80%
Accuracy	<±1 m RMS
Rate	1–10 Hz
Interface	TTL
Wavelength	1535 ± 5 nm
Min range	≤15 m
Input	DC 12 V
Weight	<44 g
Envelope	≤41 × 31 × 16 mm

The range value is a lower-bound capability claim under the stated conditions, not a verified upper limit or a guarantee for every target. Target size and detection probability are not specified.

Application and integration notes

The module requires DC 12 V input. Its listed mass is <44 g, and its envelope is ≤41 × 31 × 16 mm. Review these values against the host platform's power supply, mounting space and communications interface. For an integration inquiry, provide the target type, expected distance, atmospheric conditions and required update rate. Confirm the communications protocol, connector pinout and acceptance test before completing the system design.

Host-system acceptance

For the TTL connection, confirm the logic-voltage specification as well as the connector pinout and message format. The supply-voltage value does not define the TTL signal level. Include nearby targets in the acceptance test so the stated minimum-range specification is assessed alongside long-range performance.