CACAZI A58 1 For 1 Smart Wireless Doorbell without Battery, Plug:UK Plug(Black Silver) Filter-RFID Keyfob it will automatically return to

it will automatically return to the charging pile to replenish the power

Battery recording time: about 15 hours

Dimensions Size about 165x106x175mm

57inch * 12

CACAZI A58 1 For 1 Smart Wireless Doorbell without Battery, Plug:UK Plug(Black Silver) Filter-RFID Keyfob it will automatically return to1. Material: ABS, electronic components 2. Remote control distance: 300 meters 3. Built in music: 60 songs 4. Volume: 5 speed adjustment 5. Transmitter battery: 12V 23A battery x 1 (shipping without battery) 6. The doorbell has 60 built in chord music, you can choose according to your preference 7. Strong penetrability, the straight line distance on the open space can reach 300 meters (note: the actual use effect varies depending on the environment,