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The M557 Doorbell Waterproof Wireless Chime Home Doorbell is made with leading technology and offers reliable performance and stability. With this product, users can select from 32 songs to function as their doorbell chord or alarm. Its battery features up to 30 transmitters with no loss of power and offers adjustable volume levels. Furthermore, it is waterproof and includes an eye-catching backlight when the doorbell is presses. As a result, this M557 Doorbell Waterproof Wireless Chime Home Doorbell is an ideal choice for shopkeepers, families, elderly people, pregnant women, or those with hearing difficulties. This wireless doorbell is further enhanced by its easy installation without the need for extra wires since it supports EU, US, and plug configurations.
Technical Parameter： Receiver Working Voltage: AC 100-220V Working Current: <100mA Wireless Frequency: 433MHz Working Temperature: -10 ° C -50 ° C Wireless Distance: 150 meters (open space) Button's Battery: 1pcs 23A 12V battery or CR2032 battery
