ITEM NAME:Wireless Waterproof Doorbell 1 Button 2 Receiver 300M Remote Control Smart D3K4 Wireless Waterproof Doorbell 1 Button 2 Receiver 300M Remote Control Smart D3K4 Scope of application: The wireless doorbell can be installed freely, and the button can be installed. It is suitable for home, office, hotel, building, dormitory, factory, construction site or any space that needs service. 1.Remote control power: less than 10mw 2.Receiver rated voltage: AC 220 3.Receiver controllable volume: 25-75dB 4.Receiver standby current: less than 1.0mA 5. Receiver plug: winning standard plug-in plug 6.Operating frequency: 315MHz  ± 2MHz 7.Accessories: transmitter built-in 12V 23A alkaline battery 1 section product manual 1.User-friendly and simple design, no need for help professionals or installers, completely eliminating the cost of decoration, free of wall cutting, can be used when plugged into a conventional indoor socket, and can be moved at any position. 2.The effect of obstacles is far superior to similar products in the industry, which can meet the needs of different family environments. The average household is about 50 meters. 3.The transmitter has a signature card indication function, and has a groove and a protective cover design for the owner's signature card. 4.The receiver has ultrasonic mosquito repellent function, which truly realizes multi-purpose use of one machine. The receiver features a stylish streamlined design and a multi-color optional decorative strip for sandblasting. 5.Exclusive use of a new generation of constant voltage circuit design, achieving high efficiency and energy saving effect, effectively increasing the service life by more than 50%. Size: 15*5*6CM Color: white and blue Material: ABS Package Contents: 1 * transmitter (remote control) 1 * receiver (sounder) 1 * sticker 1 * battery 2 * screw 1 * Plastic cardboard.Scope of application: The wireless doorbell can be installed freely, and the button can be installed. The receiver has ultrasonic mosquito repellent function, which truly realizes multi-purpose use of one machine.
