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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.
Since it relies on wireless technology, the chime box should be placed within the range of the doorbell transmitter to ring. The wireless doorbell system only has two components. The first is the doorbell transmitter, which is connected to the bellâs button. Once it is pressed, the second element rings. This is called the chime box receiver that receives the frequency emitted by the battery-operated doorbell transmitter.