AVANTEK Wireless Doorbell, 1000 Feet/300 M Long Range Door Bells with 2 Receivers, Mini IP55 Waterproof, LED Flash, 5 Levels Volume, 52 Melodies, LED Flash, CW-12

【3-YEAR BATTERY LIFE 】: The high-performance transmitter uses a CR2032 lithium battery that boasts 3-year maximum lifespan with ultra-low power consumption
【WEATHERPROOF & DURABLE】: Rated IP55 waterproof and weather-resistant, the transmitter can brave even the harshest weather conditions (-20 to 60 °C) like rainstorms, direct sun exposure, and frost; enjoy the freedom to install it outdoors without worrying
【300 M ULTRA LONG WIRELESS RANGE】: Operating at 300 m range, the wireless doorbell ensures you will never miss any visitor, even if you are a few rooms away or on another floor; the doorbell kit includes 2 plug-in receivers and 1 transmitter, and the transmitter will not interfere with other appliances in your home or those of your neighbours
【52 CHIMES】: Delivers rich and crisp sound thanks to the 29 mm stereo speaker; provides 5 adjustable volume levels with a maximum setting of 115 dB; simply press the Next or Previous button to choose a suitable chime from 52 melodies for any situation; eye-catching LED flashes that can alert those with impaired hearing or when the doorbell sound is temporarily unwanted
【SIMPLE SET-UP】: Just plug the mini receiver into a socket and fix the transmitter on a wall with the accessories provided; includes 2 screws, 2 anchor plugs, a key and double-sided adhesive tape