✅【36-SWEET CHIMES AND FLASHING ALERT】: There are 36 sweet chimes/ringtones with 4 level adjustable sound volume for option, range from 25dB to 115dB, can satisfy various people's request, ONLY PRESS sound key for choosing till the chime that you love. At the same time, receiver's indicator will flash when doorbell rings, to remind the people with IMPAIRED HEARING to answer the door.
✅【WATERPROOF DESIGN AND PIANO STYLE BUTTON】: IP44 Waterproof Design for Remote Button, which can work under temperature between -22°F/-30C° and 158°F/70C°, and withstand various harsh weather, sunshine, rain, snow, freezing etc.. Piano Style Button make your touching feels perfect, seems like you touch the key of piano.
✅【LONG DISTANCE TRANSMISSION】: Operating range up to 500 feet (1000 feet in open space without obstacles), ensuring it works better in your home, make you could hear the bell and answer the door timely.
✅【ENERGY SAVING AND EFFICIENT】: No battery required and Plug-in for RECEIVERS (AC 85-265V), only cost 10 cents electricity bill annually, and 1pcs 23A 12V alkaline battery for REMOTE BUTTON, its lifetime up to 1-year.
✅【EASY TO INSTALL AND 100% GUARANTEE】: Suitable for house, office, receptions, etc., plug-in for receivers, sticky tapes or screwing for remote button on/beside door frame, refer to MANUAL carefully. We guarantee 3-year return against defects, we'll refund or replace it if you're NOT SATISFIED, there's ZERO COST LOSS to you.