Sunrise Electronics Manuals

Sunrise Electronics SR-FRS-1W (VHF) Wireless Intercom Data Transmission Module Datasheet

The SR-FRS-1W (VHF) module provides wireless voice intercom and data transmission functions in the 136‑174 MHz band. It integrates a high‑performance RF transceiver, microcontroller and power amplifier, and can be controlled via a standard RS‑232 asynchronous serial interface using AT commands.

The module supports two power levels (0.5 W low, 1 W high), multiple data modes (short message, DTMF), and offers extensive configuration options such as CTCSS/CDCSS, VOX, and adjustable audio levels. It is suited for portable intercom systems, wireless data links, and embedded voice functions in other products. This manual is written in Chinese.

Covers: Overview · Pin Definitions · Electrical Parameters · Frequency Range · Receiver Characteristics · Transmitter Characteristics