Kaito Wireless Doorbell, No Battery Needed/Self-Powered, Plug&Play Receiver w/25 Chimes, Waterproof
This door chime works with the push of a button, no battery needed on either button or receiver, Receiver works on 110V and 220V AC. Does not need any battery or power line to charge the transmitter, and it transforms its own mechanical energy to electrical energy with the push of the button. Does not need any wire for installation, easy and convenient to use. Transmitter can be used in both high-temperature and low-temperature environment: from -40 to 60 degrees Celsius. Transmitter is made of durable ASA plastic. Waterproof transmitter.