This wireless driveway alarm is perfect for monitoring two entrances! This dual kit comes with two end-of-driveway transmitters, one receiver chime, and one low-voltage "Original" Bell™. This Milton driveway signal bell kit and driveway alert system monitors traffic using two transmitters. Each of the two black box transmitter units operates off of a 9-volt transistor battery. The chime plugs into an ordinary electrical outlet and features built-in volume control, and the "Original" Bell™ is connected to the wireless chime and gets its power from the chime. Each of the transmitters can be set to play a specific notification/tune. This means that each of the driveways being monitored can have a different sound!
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