TECKNET Wireless Doorbell, Plug in Door Bells Cordless IP65 Waterproof Black\nProduct Details\n--400M Wireless Range: This wireless doorbell offers a remote connection of up to 400 meters/1300 feet in open spaces without interfering with nearby cordless devices. A robust and stable radio signal ensures that you never miss a visitor. Note: The transmitter is powered by CR2032 battery (included).\n--IP65 Waterproof: This battery operated doorbell is waterproof up to IP65 and designed to withstand extreme environments. It remains reliable even in harsh weather conditions, operating within a temperature range of -20\u2103 to 60\u2103. The easy install doorbells can be quickly attached to the wall using screws or adhesive pads.\n--60 Beautiful Melodies: This door bell offers 60 different melodies, allowing users to select their favorite based on their mood. With 5 volume levels ranging from 0dB to 120dB, it accommodates various occasions and user preferences.\n--Memory Function: The door .