Laser Rangefinder Modules, 20 m to 10 km | PO System Technology Co., Ltd. / PO Tech Studio

Laser Rangefinder Modules

Five range classes, from a 20 m short-range module to a 10 km long-range module. All are Class 1 lasers and report distance over UART/TTL. Country of origin: Taiwan.

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Illustration of two laser rangefinder modules with receiver and transmitter optics and UART leads — Original illustration, not a product photo. Actual appearance varies by model.

Specifications

Range	Accuracy	Wavelength	Standby power	Measuring power	Supply voltage	Weight	Size (mm)
0.1–20 m	±0.1 m ± 0.05% of distance	905 ± 20 nm	< 60 mA	< 60 mA	3.6–5 V	8 g	26.4 × 16.2 × 17.2
5–2,000 m	±0.4 m ± 0.05% of distance	905 ± 20 nm	≤ 200 mW	≤ 900 mW	3.6–5 V	12.5 g	27.8 × 26.3 × 13
5–3,000 m	±0.4 m ± 0.05% of distance	905 ± 20 nm	≤ 200 mW	≤ 900 mW	3.6–5 V	25 g	49.3 × 40.5 × 25.7
5–5,000 m	±0.4 m ± 0.05% of distance	1535 ± 20 nm	≤ 2 W	≤ 5 W	10–14 V	85 g	62 × 43 × 32
5–10,000 m	±0.4 m ± 0.05% of distance	1535 ± 20 nm	≤ 2 W	≤ 5 W	10–14 V	145 g	87 × 67 × 46

Common specifications: laser Class 1 (< 1 mW); UART/TTL interface; operating temperature −20 to +80 °C, storage −40 to +80 °C; RoHS and REACH compliant. Range and accuracy apply to targets with over 90% reflectivity at 25 °C; with lower-reflectivity targets the range decreases and the error increases, depending on the target and environment.

Ranges of the five modules on a logarithmic scale, measured on targets with reflectivity above 90% at 25 °C. Color shows the laser wavelength, and the module weight is shown at the end of each bar. Lower target reflectivity shortens the range.

How to choose

905 nm modules: 3.6–5 V supply and 8–25 g, suited to integrations with limited space and power
1535 nm modules: 5 km and 10 km range, 10–14 V supply, 85–145 g
When the laser shares a line of sight with cameras, plan the laser-to-camera alignment calibration; see our article on why EO/IR dual-sensor payloads fall out of alignment

Selection calculator

Pick a module by distance, power and weight

Enter the longest distance you need and your integration limits. The calculator shows which of the five modules fit and the ranging accuracy at that distance.

Longest distance to measure m

Available supply 3.6–5 V 10–14 V Either

Weight limit (leave blank for none) g

Suggested
Accuracy at that distance

Range	Wavelength	Supply	Weight	Result

Range and accuracy follow the table on this page: measured on targets with reflectance of 90 % or more at 25 °C; accuracy is estimated by adding the fixed term and 0.05 % of distance. Lower target reflectance shortens the range and increases the error, so include the target material, color and real distance in your request and we will confirm before quoting. All modules are Class 1 lasers.

Send these results with a quote request

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Original illustration, not a product photo. Actual appearance varies by model.

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