513E Waterproof LED Wireless Doorbell Remote Control Door Bell with 36 Tune Chimes Songs

Communication Interface:Wireless Power:Dry battery Product specifications: Receiver: 2 × AAA batteries Transmitter: 1 12V23A battery (supplied) Weight: 120G/PC Usage: After installing the battery, pull the receiver switch to the sound selection (double arrow) position (change the ring tone every time you press the shot, if you want to fix a certain music, pull the switch to the fixed position (music symbol) Can be fixed