IP44 Wireless Doorbell Battery Transmitter and Receiver

1.The receiver need to battery required,you can put it anywhere you want,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. 2.IP44 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 -10°C to 55°C 3.150M reliable wireless signal coverage (Unobstructed space) anti interfering with your home electronics. Super remote control and penetrating power, signal stability. Up to 1 years of transmitter battery life to ensure a superior user experience. 4.The door entry alert is equipped with 32 kinds of ringtones of different styles for your choices. 4 levels volume adjustable, from silent to noisy(0 db to 85db) to meet your needs for different occasions.Memory function: The built-in memory chip remembers your last setting tune without ha…