Wireless Doorbell Button, FullHouse Waterproof Door Bell Push Button, Distinguish Front and Rear Doors, Over 1000 feet Range, for Home Office Classroom

Technical specifications: Power consumption of transmitter <10mW Wireless Range: 1000 ft maximum (Open Space) IP44 weatherproof & dustproof casing for outdoor use Button working temperature: -7f to 140f How to pair it with your FullHouse doorbell: 1. Plug in the receiver, press the music button of the receiver to select tunes. 2. Press and hold the volume button for about 3-4 seconds, the LED indicator lights up, then press the push button. Suggestions: 1. Metal door will interfere with the signal and shorten the transmission range, please do not install the transmitter on the metal door. 2. Please place the receiver in areas away from refrigerator, microwave and other high-power appliances. 3. The transmitter is IP44 waterproof, but we recommend installing a waterproof cover for long-term use. Package contains 2 push button only, if you want to buy an receiver, please check the store of 1 Plus One.