LRF1200A1 — Laser rangefinder module
LRF1200A1 905 nm Laser Rangefinder Module. Maximum measuring range 1.2 km, accuracy ±1 m, interface UART, 3.3 V TTL, weight 18 g.
Specifications
| Laser wavelength | 905 nm |
|---|---|
| Maximum measuring range | 1.2 km |
| Ranging accuracy | ±1 m |
| Update rate | 1–3 Hz |
| Lens / aperture | 6.6 mm |
| Interface | UART, 3.3 V TTL |
| Supply | 3.3 V ± 0.1 V (one older section says 3.3–5 V; con |
| Weight | 18 g |
| Dimensions | Ø23 × 40 mm or Ø23 × 48 mm (sources differ; confir |
| Operating temperature | −20 °C to +55 °C or +60 °C (sources diff |
| Ingress protection | IP67 |
| Laser safety (as documented) | Class 1 (source panel inconsistent; confirm) |
5–1,200 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
LRF1200A1 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, 3.3 V TTL and the documented supply is 3.3 V ± 0.1 V (one older section says 3.3–5 V; con. 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 LRF1200A1 differs from LR1000D23
| LRF1200A1 | LR1000D23 | Δ | |
|---|---|---|---|
| Max range | 1.2 km | 1.2 km | same |
| Mass | 18 g | 20 g | +2 g |
| Accuracy | ±1 m | ±1 m | same |
Close alternatives
Source: erdilrf.com/models/lrf1200a1 · transcribed 2026-10-23 · dataset · selector