- doorbell does not require batteries: AC100-240V battery-free doorbell, no battery, no wires.
- Power supply: AC100-240V (receiver), self-powered (button); working range: 200m in an area.
- Radio frequency: 433MHZ; melody: 58PCS.
- Function: Self-powered (no battery required); Note: The pressing force is slightly larger than the traditional doorbell to ensure sufficient power.
- How to pair the signal: Pairing method: press and hold the music button on the receiver for about 5 seconds (the indicator light is on), release the volume button, and then immediately press the button, the signal is successfully paired.
