Technical datasheet for the Sangbo STR-18A micropower 433 MHz wireless transceiver, covering specifications, pinout and usage notes.
The STR-18A is a low‑power 433 MHz wireless transceiver designed for short‑range data communication. It supports multiple data rates (1200‑9600 bps) and offers a typical output power of 10 dBm (10 mW).
The module includes a DB9 RS‑232/RS‑485 interface, configurable pins, and operates from a 4.5‑5.5 V supply. Mechanical dimensions are 70 mm × 45.5 mm × 29 mm and it works in temperatures from –40 °C to 85 °C. This manual is written in Chinese.
| Output Power | 10 dBm (10 mW) |
|---|---|
| Operating Frequency | 433 MHz ±5 MHz |
| Supported Data Rates | 1200, 2400, 4800, 9600 bps |
| Supply Voltage | 4.5 V – 5.5 V DC |
| Dimensions | 70 mm × 45.5 mm × 29 mm |
| Receiver Sensitivity | -105 dBm |
| Antenna Gain | 3 dBi |
The module delivers a typical output power of 10 dBm (10 mW).
It supports 1200, 2400, 4800 and 9600 bps.
The device runs from a 4.5 V to 5.5 V DC supply.