After the batteries are installed, turn the receiver switch to the selection position (each press for a ringtone, if you want to fix a music, the switch to the sound position (music symbol) can be fixed.
1. do not be close to metal objects, avoid metal magnetic field affect the doorbell results;
2. do not place the doorbell in the sun and rain.
1 × door bell transmitter (1× 23 a 12 v battery not included)
1 × door bell receiver (2× aaa batteries not included