The XLD Technology HSD-1P micropower data transmission module user manual provides specifications, connection details, configuration commands, and low‑power…
The HSD-1P is a micropower wireless data transmission module designed for reliable short‑range communication. It supports multiple baud rates, various interface options (TTL, RS232, RS485) and offers low‑power sleep mode for battery‑operated applications.
This manual covers the module's technical specifications, power requirements, pin definitions, parameter setting procedures, frame format, data transmission notes, supported protocols, low‑power features, antenna configuration, and factory default settings. This manual is written in Chinese.
| Modulation method | GFSK |
|---|---|
| Working frequency band | 475 MHz |
| Encoding method | 高效前向纠错编码 |
| Data format | 8N1, 8E1, 8O1 |
| Transmit power | 13 dBm (20 mW) |
| Receive sensitivity | -112 dBm @ 9600 bps |
| Supported transmission rates | 1200–115200 bps |
| Power supply (TTL) | DC +3.6 V ~ +8 V or +2.8 V ~ +3.6 V |
| Power supply (RS232/RS485) | DC +4.5 V ~ +5.5 V |
| Interface options | TTL / RS232 / RS485 selectable |
| Dimensions (excluding antenna) | 32.5 mm × 20 mm × 8.0 mm |
| Sleep current | < 25 µA |
| Operating temperature | -30 °C ~ 75 °C |
| Maximum communication distance (open) | > 600 m at 9600 bps (BER=10⁻³) |
The module can be powered with TTL voltage of DC +3.6 V to +8 V (or +2.8 V to +3.6 V) or with RS232/RS485 voltage of DC +4.5 V to +5.5 V.
The module can reliably communicate over distances greater than 600 meters at 9600 bps with a bit error rate of 10⁻³.