User manual for the SM34-16ch-433MHz wireless serial communication module by Shangzhi, covering features, specifications and setup.
The SM34-16ch-433MHz module provides up to 16 selectable channels in the 430‑436 MHz ISM band with a transmit power of +30 dBm (1000 mW). It supports multiple data rates (1200‑19200 bps) and offers TTL‑UART, RS‑232 and RS‑485 interfaces, along with optional checksum and watchdog functions for reliable half‑duplex communication.
The manual details power requirements (+3‑5.5 VDC, transmit current ≤495 mA, receive current ≤27 mA, standby <5 µA), connector pin definitions, antenna requirements (50 Ω), channel configuration via jumpers, and recommended wiring practices. Technical specifications, dimensions (47 × 30 × 7 mm) and environmental limits are also provided. This manual is written in Chinese.
| Modulation | FSK |
|---|---|
| Working frequency | 430‑436 MHz |
| Receive sensitivity | -118 dBm |
| Transmit current | ≤495 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 |
| Dimensions | 47 mm × 30 mm × 7 mm |
It offers TTL/UART, RS‑232 and RS‑485 interfaces.
The module operates from +3 V to +5.5 V DC.