User manual for the SM30-8ch-433MHz wireless module detailing features, interfaces, configuration and technical specifications.
The SM30-8ch-433MHz is a micro‑power wireless serial communication module operating in the 433 MHz ISM band. It offers up to eight selectable channels, multiple UART‑compatible interfaces (TTL, RS‑232, RS‑485) and supports data rates from 1.2 kbps to 19.2 kbps.
The manual describes power requirements, pin definitions, antenna selection, channel configuration, and provides a full set of technical specifications, including dimensions, environmental limits and recommended accessories. This manual is written in Chinese.
| Modulation method | FSK/GFSK |
|---|---|
| Working frequency | 430‑434 MHz |
| Transmit power | 10 dBm (10 mW) |
| Receive sensitivity | -118 dBm |
| Number of channels | 8 |
| Transmit current | ≤35 mA |
| Receive current | ≤27 mA |
| Standby current | ≤5 µA |
| Interface speed | 1200/2400/4800/9600/19200 bit/s |
| Interface type | TTL/UART/RS‑232/RS‑485 |
| Supply voltage | +3 V to +5.5 V DC |
| Operating temperature | -20 °C to 85 °C |
| Storage temperature | -65 °C to 150 °C |
| Operating humidity | 10 % to 90 % RH (no condensation) |
| Dimensions | 47 mm × 26 mm × 7 mm |
The module transmits at 10 dBm (10 mW).
It provides eight selectable channels.
Standby current is less than 5 µA.
The module operates from +3 V to +5.5 V DC.