Wirelessdrivewayalarm electromagnetic technology detects vehicles entering & exiting driveway & alerts you with indoor chime up to 400 range from indoor receiver to driveway sensor does not detect people or animals transmitter requires 2 aa batteries... more
The MightyMulewirelessdrivewayalarm provides constant 24/7 driveway monitoring for your home, property or workplace. Electromagnetic sensor detects vehicles entering and exiting driveway and pedestrians. more
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