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Pick a model by the job, not by the datasheet

Six application profiles, each with the models that fit and the reason they fit. The selection rules are stated on this page, so you can disagree with them — which is the point.

Jump to: UAV gimbal payload · Fixed observation tower / border post · AGV docking and machine positioning · Handheld / sport optics OEM · Long-range targeting / designation support · Integrating your own rangefinder

UAV gimbal payload

Payload mass is the hard constraint, then update rate, then reach. · tune it yourself

Model	Band	Max range	Accuracy	Mass	Interface
LRF0816C	1535 nm	8 km	±2 m	58 g	—
LRF0818C	1535 nm	8 km	±2 m	65 g	UART-TTL
LRF0609C	1535 nm	6 km	±2 m	62 g	UART-TTL
LRF0610C	1535 nm	6 km	±2 m	90 g	UART + RS-422

Modules on a stabilised gimbal have to earn their grams. These four reach 4 km or more at 120 g or less; the trade is between reach and mass, and between 905 nm (fast, cheap) and 1535 nm (only option past a few kilometres).

Fixed observation tower / border post

Long reach and long cable runs; mass and power are secondary. · tune it yourself

Model	Band	Max range	Accuracy	Mass	Interface
LRF1829C	1535 nm	23 km	±2 m	400 g	RS-422
LRF1830C	1.54 µm	23 km	±2 m	400 g	UART + RS-422
LRF1525C	1.54 µm	15 km	±2 m	400 g	RS-422
LRF1221C	1.54 µm	12 km	±2 m	275 g	RS-422

A fixed post can carry 275–410 g and a 12–24 V rail. What it cannot afford is a range that collapses in haze, which is why these are all 1535 nm with RS-422.

AGV docking and machine positioning

Short range, high rate, centimetre resolution, light and cheap. · tune it yourself

Model	Band	Max range	Accuracy	Mass	Interface
LRF10VB	940 nm	9 m	±0.05 m	1 g	UART-TTL
LRF22VB	905 nm	20 m	±0.05 m	1.5 g	UART-TTL
LRF50H	905 nm	50 m	±0.05 m	15 g	UART-TTL
LRF50VB	905 nm	50 m	±0.05 m	1.3 g	UART-TTL

Below 100 m the answer is a single-point sensor: grams, tens to hundreds of hertz, centimetre resolution. Do not buy kilometres you will never use.

Handheld / sport optics OEM

Sub-30 g, 905 nm, 1–2 km, display-friendly output. · tune it yourself

Model	Band	Max range	Accuracy	Mass	Interface
LR1500D23	905 nm	1.5 km	±1 m	20 g	UART-TTL
LR1500E2	905 nm	1.5 km	±1 m	10 g	UART-TTL
LR1500E4	905 nm	1.5 km	±1 m	10 g	UART-TTL
SPD1200N0	905 nm	1.5 km	±0.3 m	5 g	UART-TTL

Inside a monocular the module is rarely the cost driver — optics are. Take the smallest aperture that still makes range and spend the money on the optical train.

Long-range targeting / designation support

15 km and beyond against vehicle-sized targets, whatever the mass. · tune it yourself

Model	Band	Max range	Accuracy	Mass	Interface
LRF1829C	1535 nm	23 km	±2 m	400 g	RS-422
LRF1830C	1.54 µm	23 km	±2 m	400 g	UART + RS-422
LRF1525C	1.54 µm	15 km	±2 m	400 g	RS-422

Three models in the catalogue publish 15 km or more. All are 1535 nm, all RS-422, all above 275 g — and all quote a specific target, which is the number that matters.

Integrating your own rangefinder

You supply the receiver, timing and optics; you need a transmitter. · tune it yourself

Model	Band	Max range	Accuracy	Mass	Interface
ER900	1535 nm	—	—	18 g	—
ER800	1535 nm	—	—	18 g	—
ER500	1535 nm	—	—	12 g	—
ER400	1535 nm	—	—	12 g	—
ER300	1535 nm	—	—	8.5 g	—
ER200	1535 nm	—	—	7 g	—

These are transmitters, not instruments: pulse energy and package, no receiver and no range. For teams building their own LRF or designator around a 1535 nm source.

Your profile is not here? Describe the job in four numbers — target size, reflectance, distance, mass budget — and we will name two candidates and say which one we expect to fail. Email tommy@erdimail.com Filter all 103 models

Rules are simple filters over the published data (mass, range, band, family), not performance predictions. Model pages carry the test conditions.