Sell Promotions Wireless Waterproof Doorbell 300M Remote LED Flash Home best price

Features: 1. This wireless doorbell set comes with 1 transmitter and 1 receivers 2. The transmitter has no screw chuck design, and it can be waterproof and dustproof without rubber ring. 3. The transmitter USE a 23A 12V alkaline battery (not included), standy time up to 1 year. 4. Receiver voltage: 110-220-240V 5. The receiver is available in a variety of plugs, US and EU adapters 6. Receiving distance: 300 meters in open area. 7. The wireless signal will be affected by obstacles. The more obstacles, the more serious the signal loss. 8. Receiver has 4 levels, 36 music to choose from. 9. Size: Transmitter 77x46x20mm, Receiver 90x56x20mm. 10.Widely use in residential, office, clinic, restaurant, etc. NOTE: The button cannot be placed on an iron door because it will interfere with the signal. Working Principle: 1 transmitter is installed outside the door, 1 receivers are installed in different positions of the power socket, press the transmitter to ring the bell, the receiver immediately rings and flashes to remind.