2 km class shortlist · 2026-11-01
2 km laser rangefinder module options: 905 nm and 1535 nm
A “2 km module” is only comparable when its target, reflectance, visibility, humidity and measurement interval are stated beside the distance.
905 nm options
| Model | Published range | Interface / mass |
|---|---|---|
| LR2000E2 | 4–2,000 m; the public record does not attach a target-reflectance phrase to this range field | UART-TTL · confirm current drawing for mass |
| LRF3000A1 | ≥3,000 m maximum measurement distance; use the current test condition for qualification | UART, 3.3 V TTL · 12 ± 0.5 g |
1535 nm options
| Model | Published range condition | Interface / mass |
|---|---|---|
| LRF0305C | ≥4,000 m at 60% reflectivity; ≥3,000 m for a building target at 30% reflectivity; other target sizes are listed in the record | UART-TTL, 3.3 V · ≤14 ± 1 g (as printed) |
| LRF1831C | ≥6,500 m to a 5 m × 15 m target and ≥12,000 m to a 20 m × 20 m target, with visibility ≥15 km and humidity ≤80% at 30 °C | RS-422 · ≤410 g |
How to qualify the shortlist
Use the exact target and atmosphere from the record as the first acceptance test. Then check minimum range, update rate, accuracy, false-alarm behaviour, connector, supply, thermal envelope and the supplied document revision. The 905 nm and 1535 nm records are not interchangeable by distance alone.
FAQ
Does “2 km” mean the module will always measure 2 km?
No. It is a published range or test result with conditions. Target reflectance, size, visibility, humidity, alignment and update mode affect the usable result.
Which wavelength should I choose?
Choose from the complete optical and safety requirement. Compare the exact test condition and assembled configuration instead of treating wavelength as a performance guarantee.
Related model records
Open the exact model page for current specifications, conditions and integration documents.