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SPD1200 series — 905 nm low-cost rangefinder modules
The entry point: 5 to 10 g, UART-TTL or UART/IIC, 1.2 to 1.5 km at 90 % reflectance and ±0.2 to ±0.5 m accuracy. Designed for volume products where the board has no room for a high-voltage bias supply.
| Model | Max range | Accuracy | Rate | Mass | Interface |
|---|---|---|---|---|---|
| SPD1200N0 | 1.5 km | ±0.3 m | 15 Hz | 5 g | UART-TTL |
| SPD1200N2 | 1.5 km | ±0.3 m | 15 Hz | 5 g | UART-TTL |
| SPD1200N4 | 1.5 km | ±0.3 m | 15 Hz | 5 g | UART-TTL |
| SPD1200S2 | 1.5 km | ±0.3 m | 15 Hz | 10 g | UART-TTL |
| SPD1200Z2 | 1.5 km | ±0.2 m | 20 Hz | 6 g | UART-TTL |
| SPD1200ZG | 1.2 km | ±0.5 m | 10 Hz | 5 g | UART-TTL |
| SPD1200N3 | 1 km | ±0.5 m | 15 Hz | 6 g | UART-TTL |
What this family is, in integration terms
A rangefinder module is a component: it provides a laser channel, a receiver and a data interface, and your product supplies the optics, the housing and the safety case. Mass and interface decide whether it fits, and both are in the table above.
- Reflectance appears twice in a datasheet. Where a sensor publishes 90 % and 10 % columns, the 10 % column is the real-world number — an AGV looks at a matte surface, not a retro-reflector.
- Update rate is not accuracy. 200 Hz with centimetre resolution is a good control input and a poor measuring instrument; decide which you are building.
- Ambient-light immunity (published in klx on several of these) decides outdoor usability far more than the headline range does.
Choosing inside this series
Range, mass and interface move together here: the longest-reach parts are the heaviest and run RS-422, while the lightest parts are short-range and run UART-TTL. Pick the two you cannot negotiate, then read the model page for the test condition behind the range figure — a 7-model series usually quotes several different targets.