CACAZI A50 1 For 1 Wireless Music Doorbell without Battery, Plug:UK Plug(Black) Tag-Full Housing Cover According to the transfer rate:

According to the transfer rate: 15 MB/s

Support data read up to 500GB

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40HQ: 543 cartons * 8 pcs = 4344 pcs

CACAZI A50 1 For 1 Wireless Music Doorbell without Battery, Plug:UK Plug(Black) Tag-Full Housing Cover According to the transfer rate:1. Material: ABS, electronic components 2. Remote control distance: 150 meters 3. Built in music: 58 songs 4. Volume: 4 speed adjustment 5. Transmitter battery: 12V 23A battery x 1 (shipping without battery) 6. The doorbell has built in 58 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,