AVANTEK Wireless Doorbell, D-3G Waterproof Chime Kit Operating at Over 1300 Feet with 52 Melodies, 5 Volume Levels & LED Flash

PREMIUM TRANSMITTER: Uses a CR2032 lithium battery that lasts 3 years; with an IP55 waterproof construction and operating temperature from -4°F (-20°C) to 140°F (60°C), this wireless doorbell is able to withstand strong winds or rainstorms
LONG WIRELESS RANGE: Delivers a long transmission distance of 1,300 ft (400 m) for full-home coverage and will not interfere with other devices
52 BEAUTIFUL MELODIES: An abundant selection of 52 melodious chimes allows you to choose the sound you prefer; 5 adjustable volume levels with a maximum volume of 115 dB make it suitable for the elderly or those with impaired hearing
MEMORY FUNCTION: This doorbell will remember your sound levels and tone settings in the event that the power goes out; once the power comes back on, the doorbell will automatically revert to the last settings
EASY TO SET UP: It’s fast and simple to install the doorbell on your wall using the included anchor plugs and screws, or adhesive pad; this doorbell system can be expanded to 2 transmitters and additional receivers for increased coverage