FLYMEI Wireless Doorbell Chime - 1000FT Range - Over 36 Different Ringtones & 4 Volume Levels - No Batteries Required for Receiver (1 Push Button & 1 Plug-In Receiver) - LED Indicator - White Blue One Doorchime kit with 1 push button and 1 receiver operating at 1000 ft / 280 m range. One plugin receiver. No need to buy batteries for receivers. Just directly plug receiver into an electrical outlet. IP44 rated waterproof push button is made to withstand rain, wind and other weather elements. Easy for cleaning. Can be used 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. Also it helps to secure your home. Build in anti-interference design, avoid the interference between users.