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In recent decades, wireless doorbell systems that do not require wall wiring have become popular. The doorbell button contains a built-in radio transmitter powered by a battery. When the button is pushed, the transmitter sends a radio signal to the receiver unit, which is plugged into a wall outlet inside the building.
Doorbell systems may be wired, which connect the doorbell to the chime using behind-the-wall wiring, or wireless, which transmit a radio signal to the chime. Doorbell systems consist of a button, a transformer and chimes. These components can be replaced independently of each other, although you may find it most cost effective to replace all the components. Using a doorbell kit, which contains everything you need to upgrade your doorbell system, is a smart way to go. This project guide will show you how to replace a wired doorbell with a wireless system and how to replace a transmitter/button, chime/buzzer/bell unit and transformer for a wired doorbell. As you work on your project, be sure to follow any manufacturerâs instructions for your doorbell.