LR1000C4

Compact 905 nm rangefinder module for night vision, thermal imagers and UAV payloads — C-series variant in a 28.8 × 30.5 × 20.9 mm square housing, tuned for tight optical assemblies.

Max range: 4–1,000 m
Accuracy: ±1 m (≤500 m)
Weight: ≤ 16 g
Interface: UART-TTL

905 nm Class 1 · IEC 60825-1 Night vision Thermal imagers UAV payloads

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VIDEO / DEMO

LR1000C4 ON THE BENCH

Product video 0:51

The video documents appearance and demonstrated behaviour only — it does not replace the spec table above, which governs range, accuracy, interface and test conditions.

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SPEC / SHEET

LR1000C4 · 905 nm

Technical specifications full sheet


Laser wavelength	905 nm ± 5 nm
Laser beam divergence	< 6 mrad
Optical material	Resin aspheric lens
Receiver aperture	9.2 × 14.5 mm
Ranging range	4–1,000 m
Ranging accuracy	±1 m (≤500 m) · ±1 m + d·0.1% (500–1,000 m)
Ranging frequency	3–10 Hz adaptive
Valid measurement rate	≥ 98%
False alarm rate	≤ 1%
Interface	UART-TTL (customizable)
Baud rate	115200 bps
Supply voltage	3.3–5 V
Startup time	≤ 200 ms
Inrush current	≈ 350 mA
Sleep power	< 1 mW
Standby power	< 0.3 W
Operating power	Near-range < 0.5 W · long-range < 1.2 W
Average laser power	On request
Response time	On request
Operating temperature	-20 to +55 ℃ (-40 ℃ optional)
Storage temperature	-40 to +60 ℃
Protection rating	IP67 (inside lens cavity)
Laser safety class	IEC Class 1
Dimensions	28.8 × 30.5 × 20.9 mm (square)
Weight	≤ 16 g
Shock / vibration	1000 g/ms (10×/s along optical axis) · 5–50–5 Hz, 2.5 g
Reliability	MTBF ≥ 1500 h

Interface UART-TTL, 6-pin

Pin	Signal	Description
1	GND	Power −
2	VCC	Power +
3	I/O	Reserved for expansion
4	TXD	Module → host
5	RXD	Host → module
6	SW-SHOT	Function enable (active high)

Application fit where it ships

Night vision Thermal imagers UAV payloads

Data is transmitted as a standard 8-byte UART frame (0x55 0xAA header, function code, four data bytes, checksum); distance is returned as the value ×10 for a one-decimal reading. A PC configuration tool and standard command set are available for integration.