- 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 -22F to 158F). - 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.
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