Q: How to pair with 433Mhz hub / receiver and SOS button / sensors?
A: - Plug the receiver into the socket.
- Press Music Up Button or Music Down Button to choose your favorite ringtone (After paired, if you want to change the chime tone, you need to pair the SOS button / sensors again . Please refer to Pairing.).
- Press and hold the pairing button until you hear one beep and indicator light blue, then the receiver goes into the pairing mode.
- Press the SOS button / trigger sensors, then the receiver beep and flash once to indicate the pairing is complete. The receiver will beep and flash twice to indicate that the pairing fails if the transmitters are full (max to 100).