RF 433MHz Wireless Doorbell DC 5V USB Remote Controll Receiver Round Single Button Transmitter Door Bell Calls 30 Ringtongs

Features: 1. Easy to use: Code learning operation: Press and hold the volume button for 5 seconds to enter the learning mode. The LED light will stay on for a long time. Press and hold the remote control to send a code. The learning is successful, and the LED light will turn off once (200ns) to restore its long light. Learning failed, the LED light goes out twice (each time it goes out for 200ns, with an interval of 200ns), and at the same time it drops twice to exit the learning mode - press the volume button once to exit the learning mode (without switching the volume). 2. Remote Control Instructions:After successfully matching the code, press the remote control button to start music. 3. Volume button:Click on the volume button to cycle through high - medium - mute, feedback a beep of the same gear, and flash the LED (200ns) once. 4. Music switching button: Press the music switching button once to switch to the next music, and the music can be cycled. 5. Clear code operation:Long press and hold the volume button of the reminder, then connect the power, and the indicator light flashes to indicate successful code clearing. Specification: (1) Working frequency: 433MHz (2) Music quantity: 30 (3) Output method: Horn (4) Demodulation method: ASK (5) Encoding format: EV1527 (6) Shell material: ABS (7) Control method: Equipped with a remote control for control (8) Product size: 56.5x33x5.3mm (transmitter), 45x45x14mm (receiver) (9) Power supply: CR2016*3 batteries (transmitter), DC 5V USB (receiver)