LRF0305C — Laser rangefinder module
LRF0305C 1535 nm Laser Rangefinder Module. Maximum measuring range 4 km, accuracy ±1 m, interface UART(TTL 3.3V), weight 14 g.
Specifications
| Laser wavelength | 1535 nm |
|---|---|
| Maximum measuring range | 4 km |
| Minimum range | 10 m |
| Ranging accuracy | ±1 m |
| Update rate | 1Hz ~10Hz |
| Beam divergence | 0.6 mrad |
| Pulse energy | 100 µJ |
| Interface | UART(TTL 3.3V) |
| Supply | DC 3~5V |
| Weight | 14 g |
| Dimensions | ≤ 27 × 25 × 15.5mm(L×W×H) |
| Operating temperature | −40 °C to+70 °C |
| Multi-target reporting | Up to 3 targets |
| Laser safety (as documented) | Class I stated in the module document. Final accessible-emission classification applies to the complete configuration. |
≥ 4,000m @60% Reflectivity, Building Target ≥3,000m @30% Reflectivity, 2.3 × 2.3m Target ≥1,500m @30% Reflectivity, 0.5 × 1.7m Target ≥800m @30% Reflectivity, 0.2 × 0.3m Target
What this model is for
- Mid-range targeting, surveying and vehicle-mounted observation.
- Gimbal and sight integration where a few kilometres of usable range is the design point.
- Systems that need eye-safe 1535 nm operation at a modest size and mass.
Integration notes
LRF0305C 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 3.3V) and the documented supply is DC 3~5V. 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 1535 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 LRF0305C differs from LRF0405C
| LRF0305C | LRF0405C | Δ | |
|---|---|---|---|
| Max range | 4 km | 4 km | same |
| Mass | 14 g | 32 g | +18 g |
| Accuracy | ±1 m | ±2 m | +±1 m |
| Pulse energy | 100 µJ | 200 µJ | +100 µJ |
| Divergence | 0.6 mrad | 0.6 mrad | same |
Close alternatives
Source: erdilrf.com/models/lrf0305c · transcribed 2026-10-23 · dataset · selector