CACAZI A19 1 For 4 Wireless Music Doorbell without Battery, Plug:US Plug(Black) Type-Voice Recorders solves the problem that the

solves the problem that the ordinary doorbell has frequently change the battery for a long time

the closer the phone and the anti-lost device are

no need for cables

Minimum Illumination 0

20W foldable solar panel

CACAZI A19 1 For 4 Wireless Music Doorbell without Battery, Plug:US Plug(Black) Type-Voice Recorders solves the problem that the1. 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,