CACAZI V028F Wireless Music Doorbell without Battery, Plug:US Plug(White) Filter-USB to IDE / SATA and external display

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Tips 2: Simulates testing

CACAZI V028F Wireless Music Doorbell without Battery, Plug:US Plug(White) Filter-USB to IDE / SATA and external display1. Material: ABS, electronic components 2. Remote control distance: 300 meters 3. Built in music: 38 4. Volume: 4 speed adjustment 5. Transmitter battery: 12V 23A battery x 1 (shipping without battery) 6. The doorbell has built in 38 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, and the