Etekcity Plug-in Wireless Doorbell Kit: 1000-feet, 52 Chimes, 4-Level Volume

Wireless range of up to 1000 ft (300 m): hear when your visitors arrive from several rooms away; can also be used as calling device for elderly to alarm their caregivers
Hassle-Free Customization: Effortlessly select from 52 chime options and 4 volume settings with the ability to customize pairing systems across multiple entrance transmitters and receivers. Select different sounds for different entrances
Seeing is Hearing: Receiver includes blue LED alert for the hearing impaired
Weatherproof Durability: Built with IP33 material to stand the test of time and weather; CE, FCC, RoHS certified
Modern & User Friendly: Designed to accent and blend with modern home decor with effortless set up powered by a 12V battery (transmitter) and electric outlet (receiver)