1Easy To Install: No wiring, no punching. Just plug the doorbell into a socket and fix the push button on a wall. It does not interfere with other equipment in your home or those of your neighbors, and you will never miss a visitor. 2Long Wireless Range: Audio level loudspeaker, ringtone coverage up to 200 . It is suitable for hearing impaired and adapt to any sleeping needs of the household during the day. The volume is very loud and can be heard throughout the house. 3Self Powered: No battery for life, self powered design. Built in power generation template, when pressing the finger button, it is automatically converted into electrical energy, and a wireless signal is sent out instantly, and the indoor receiver automatically rings. 4Will Not Take Up Your Socket Wireless Doorbell Kit: The unique plug in doorbell kit is small and nice. Space saving and easy to use. 5Widely Used: A perfect wireless doorbell kit for home, office, apartment, school, villas, warehouses, hotel, factory, hospital or other.