CACAZI A19 1 For 3 Wireless Music Doorbell without Battery, EU Plug(Black) Filter-Wireless Routers it can also be used

it can also be used for special purposes such as contact

Click mouse mode key--Mode indicator red light on--plug receiver into computer USB port--con net ed

support 3D function

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CACAZI A19 1 For 3 Wireless Music Doorbell without Battery, EU Plug(Black) Filter-Wireless Routers it can also be used1. 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 (delivery 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, and