Introducing the first ever completely batteryless door chime. By using the kinetic energy created each time the doorbell button is pushed the RF signal transmits without the need for a battery. Simply pressing the button generates the energy to activate the chime. No Batteries Needed ever. Easy to install, simply plug in the chime and use the two sided adhesive to mount the button. Mute the chime when you do not want to be disturbed. LED indicator light. Black with White bottom. HeathCo is the manufacturer and marketer of Heath Zenith branded products.