🎵Wireless Doorbell with Extra Socket: Wireless doorbell kit contains 2 plug-in receivers(chimes) and 1 transmitter( no battery required push button). Plug in doorbell wireless does not take the socket position and it can be used as a socket to save space, easy to use, provide power for mobile phones, tablets, television and other equipment. Self-powered wireless doorbell button uses an energy-saving battery with an ultra-long lifespan of 3-4 years and no need to change the battery frequently. 🎵1000 FT Ultra Long Operating Range: White Wireless doorbell chime has powerful signal penetration, operating up to 1000ft/300M range in open space, without disturbing other devices in your home or neighbours. When you rest on the second floor in the bedroom, weeding in the garden or cook in the kitchen, you can hear the bells clearly, never worry about missing any visitors. Long range wireless doorbell with 2 receivers are great for home, apartment, classroom, villas, hotel, factory and more. 🎵IP55 Super Waterproof & LED Flash: Door bell ringer wireless transmitters is IP55 dustproof and waterproof. Works between -4 °F-140 °F, resist different harsh weather conditions. Also, The LED flasher on the door chimes are easy to notice, serve as the hearing impaired's best bells for door.When the doorbell rings, the blue LED indicator flashes. Electric wireless doorbell used as a office door chime, apartment doorbell, emergency service bell for elderly or a classroom doorbell for teachers. 🎵38 Beautiful Ringtones & Mute Mode: Nissar wireless doorbell receiver features 38 melodies and 5 levels adjustable volume(0dB to 120dB) to meet your needs for different occasions.And included ringtone memory function, remembers your last melody and volume level after a power outage. Also, wireless bell doorbell it can choose mute mode,don't worry doorbell melodies will disturb a sleeping baby. When the doorbell rings, the visual blue LED light on the receiver flashes and you won't miss guests. 🎵Easy to Install: Just plug the doorbell receivers into socket and fix the push button transmitter on a wall with the accessories provided; Includes 2 screws, 2 anchors, 2 double-sided tapes and user manual. Wireless doorbells for home has been paired before delivery and no need for wiring or electrician installation when using it. Plug-and-play. Wireless door bells & chimes will bring convenience to your life. We offer within 6 months "no reason back" and within 24 months "free replacement.