FLYMEI Environment Friendly Wireless Doorbell Chime Kit - With Sound and LED Flash Light - 36 Chime Tones - Plug in Door Chime - 1 Transmitter and 2 Receivers - Black Doorchime kit of 1 push button and 2 receivers support a wireless range of up to 1000 ft / 280 m. Wireless design makes it to be used at many places. 2 plugin receivers.Environment friendly, no need to buy batteries for receivers. Just directly plug receivers into an electrical outlet. IP44 rated waterproof push button is made to withstand rain, wind and other weather elements. Easy for cleaning. Can be applied to care the old and patient or send emergency notice. Up to 36 Chimes to be selected and 4 volume levels. Good option for nap time without disturbing. When the push button is pressed you will be promptly notified by the chimes and LED indicator. A specially designed coding system ensures there is no interference to or from any nearby wireless products.