Generic 43 Wireless 2.4G Switching RF Module

The module features built-in ID learning for secure pairing. Typically, you enter a learning mode via a specific pin sequence or command sent over its serial interface. Once in this mode, press the button on your intended remote transmitter. The module will store the unique ID and hopping pattern in its non-volatile memory. This process ensures only paired remotes can control the module, providing anti-interference and security. Always refer to the specific vendor datasheet for the exact pinout and command sequence.

This module operates on a wide DC voltage range from 1.8V to 3.6V, making it compatible with single-cell Li-ion batteries or regulated 3.3V supplies. For stable operation, connect a clean, decoupled power source directly to the VCC and GND pins, placing a 10µF tantalum and a 100nF ceramic capacitor as close as possible to the module's power pins. Ensure your power source can deliver brief current spikes during transmission. The ultra-low 24 µA idle current makes it ideal for battery-powered applications where long standby life is critical.

Yes, while the module is designed for standalone switch control, it also supports serial data transmission for custom integration. You can connect its TX and RX pins to a microcontroller's UART (like an Arduino's Serial1) using 3.3V logic levels. Configure your MCU's serial port to the module's default baud rate (commonly 9600 or 115200 bps). You can then send structured AT-style commands or custom data packets for advanced control schemes, logging, or integration into larger IoT systems, overriding the simple switch function.