While it may be a component of a home security system, a wireless driveway alarm may just as likely be used independently. Designed to monitor cars coming into and going out of a driveway, wireless driveway alarms are powered by standard batteries and have a transmission range of anywhere from 400 to 1000 feet. Know exactly when a vehicle enters or exits a property with this handy device.
How it Works
A wireless driveway alarm uses an electromagnetic sensor that sends a signal to an indoor receiver any time the sensor detects the presence of a vehicle, whatever direction it moves. When a vehicle is detected, an indoor tone rings, alerting you to its presence. The same device can be used to keep track of vehicles that are parked. Should it detect movement, the same tone will sound inside.
Wireless driveway alarms use the best electromagnetic sensor technology. The alarm is formulated to not sound indoors if people or animals pass the sensor, reducing the occurrence of false alarms. Driveway alarms are adjustable to compensate for too many false signals. Typically, a wireless driveway alarm setup includes a sensor, transmitter and an indoor receiver with a power transformer. Depending on the brand and the transmitter's range, expect to pay anywhere from $75 to $400.