Fosmon WaveLink 51008HOM Wireless Doorbell with 2 Buttons (300M/1000FT, 52 Chime Tunes, 4 Volume Levels, LED Indicators) 2 Remote Push Buttons, 1 Plugin Receiver for Home, Business, Office, Classroom [MONITOR THE AREAS MOST IMPORTANT TO YOU] WaveLink wireless doorbell offers a generous transmit range of nearly 1000 feet. Far enough to cover every door in your house. Expand the system by pairing up to 10 receivers to one push button transmitter, or 10 transmitters to one receiver. This wireless doorbell kit allows you to add WaveLink security contact sensor or WaveLink motion detector. The choice is yours. [52 UNIQUE CHIMES] 52 unique ringtones and chimes allow your wireless door and window alarm system to meet any need. [PROVIDE PEACE OF MIND FOR THE HEARING IMPAIRED] With its built in LED indicator, the wireless door alarm receiver and transmitter offer additional assistance when coupled with the receiver to the hearing impaired. Difficulty hearing is no problem with WaveLink. [EASY INSTALLATION] With its simple wireless plug in and double sided tape, the wireless door and window alarm sets up in seconds. It gives you the opportunity to spend your time elsewhere. All hardware is included, and ready to use. [LIMITED LIFETIME WARRANTY] Join millions of satisfied customers with our limited lifetime warranty, backed by our experienced and dedicated USA based customer service.