LR1000E4 — Laser rangefinder module
LR1000E4 905 nm Laser Rangefinder Module. Maximum measuring range 1 km, accuracy ±1 m, interface UART-TTL, weight 10 g.
Specifications
| Laser wavelength | 905 nm |
|---|---|
| Maximum measuring range | 1 km |
| Ranging accuracy | ±1 m |
| Update rate | 3–10 Hz (adaptive) |
| Beam divergence | 9 mrad |
| Lens / aperture | 9.2 mm |
| Interface | UART-TTL |
| Supply | 3.3–5 V |
| Weight | 10 g |
| Operating temperature | −20 °C to +55 °C |
| Ingress protection | IP67 |
| Laser safety (as documented) | Class 1 |
4–1,000 m
What this model is for
- Handheld and portable instruments, golf and sport optics, and short-range surveying.
- Collision warning and industrial distance measurement at metre-to-kilometre scale.
- Cost-sensitive OEM builds where a 905 nm source and a small aperture are acceptable.
Integration notes
LR1000E4 is a bare module, not a finished instrument: it arrives with an electrical interface and a mechanical envelope, and your product owns the optics, the housing and the safety case. The documented interface is UART-TTL and the documented supply is 3.3–5 V. Where a figure above is a limit (≤ / ≥), treat it as the manufacturer's statement and confirm the acceptance test in your own build rather than assuming margin.
For a 905 nm rangefinder, the laser safety classification of the finished product is the integrator's responsibility: the module document states its own classification, and the accessible emission of your assembled unit must be assessed separately.
How LR1000E4 differs from LR1000E2
| LR1000E4 | LR1000E2 | Δ | |
|---|---|---|---|
| Max range | 1 km | 1 km | same |
| Mass | 10 g | 10 g | same |
| Accuracy | ±1 m | ±1 m | same |
| Divergence | 9 mrad | 9 mrad | same |
Close alternatives
Source: erdilrf.com/models/lr1000e4 · transcribed 2026-10-23 · dataset · selector