Doorbell, 1,300ft Waterproof Plug in Wireless Door Bells with 3 Cordless Battery Operated Buttons with 55 Melodies, 5 Volume Levels LED Digital Number Display for Home with 3 Receivers

- IP55 dustproof and waterproof, can withstand all kinds of severe weather conditions. Excelent materials can prevent itself from higher temperature, low temperature and interference (working temperature between -4°F to 140°F) - Just plug the receiver into a electrical outlet, mount the electric doorbell transmitter on the wall or anywhere you can via double-sided tape or screws. The battery is pre-installed in the transmitter - 1,300FT reliable wireless signal coverage (Unobstructed space) anti interfering with your home electronics. Super remote control and penetrating power, signal stability. Up to 3 years of transmitter battery life to ensure a superior user experience & - The door entry alert is equipped with 55 kinds of ringtones of different styles for your choices. 5 levels volume adjustable, from silent to noisy(0 db to110 db) to meet your needs for different occasions - Not only have we made the traditional door bell ringer wireless, but we made it smart too. The LED indicator can display different numbers to help you easily distinguish which door is opened. And is designed for the deaf people and elderly, Manufacturer: SURFOU