Wireless doorbell, Intelligent doorbell, Apartment doorbell, China Factory,Manufacturer,Supplier
http://www.lishidunsocket.cn
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Product Name：Wireless doorbell
Transmitter Battery: 23A12V
Receiver Voltage: 110-240V / 50-60Hz (Wide Voltage)
Fluctuation Frequency: 433.92mhz ± 75khz
Volume: 4 levels adjustable
Ring Tone:60
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