Long Range Lumive doorbell transmitter may be up to 1000 feet (300 meters) away from the ringing receiver in the open. Our wireless doorbell system can notify you that someone is calling from outside, whether you are in the bedroom or the kitchen. Never be concerned about losing out on guests. Easy Installation Lumive wireless doorbell doesn't need any wiring or experience to set up. It has two receivers (indoor units) that run on household power (100-240VAC-50/60Hz) and can be set up by anyone.No battery, convenient for environmental protection! Just plug it directly into the UK socket. The transmitter (outdoor unit) uses one battery that could last up to one year for easy installation on the wall without the hassle of wiring. 38 Adjustable Melodies Our cordless doorbell features multiple chimes and adjustable volume levels for any kind of application. The wireless doorbell offers a wide selection of 38 tunes for your choice. A 3-level volume range from 25 dB to 85 dB is available. No Interference Doorbell Lumive's wireless doorbell uses digital coding to keep other doorbells from interfering with each other. This way, there will be no interference between other doorbells that are nearby. Waterproof Doorbell The transmitter's push button is IP44 weatherproof and works perfectly in harsh conditions to protect the outdoor wireless transmitter from dust and rain. The low power transmitter's built-in 12V23A alkaline battery (has a 1-year lifetime) A wireless doorbell for everyone Due to the easy installation and beautiful ring chimes, the Lumive doorbell is suitable for use in homes, offices, hotels, buildings, dormitories , factories, construction sites, etc.