No Batteries Required & Long Distance Control- Remote transmitter button and chime units all no batteries required.Operating range up to 328ft/100m in open area ensures you to hear the bell
52 Available Ringtones&Adjustable Volume -Door alarms for home has 52 different ring tones with 5 levels of adjustable volume from 0db to 100dB(including mute) to satisfy your unique needs. Flashing LED indicator light with audio alert indicators which is easy for people including the hearing impaired to notice,you'll be sure never to miss a visitor's arrival again!
Add Accessories - The chime receiver support up to 20pcs remote button,if you need more doorbell button,you can find them on our shop.
Easy to Install - Easily plug receiver into an electrical outlet (no batteries required for main receiver).Push button can be fixed to the door-frame with the attached adhesive tapes.The receiver and transmitter are pre-paired for instant operation.