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The Mier DA-500 Driveway Alert System is buried along your driveway and alerts you to incoming vehicles. The driveway probe detects moving metal and sends an alarm signal up the wire back to the control box in your home which sounds a whistle to alert you to that vehicle. The driveway probe only detects moving metal so you will never receive false alerts from animals, people etc.
The sensitivity of the probe is adjustable at the control box, as well as the length of time that the whistle will sound.
The Mier Products control box has a 24V output as well as a dry contact output you can choose between to activate different alarms, sirens, chimes etc.
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