A Useful Addition to Your Home Security

Guardline sent me their long-range wireless driveway alarm to review. It consists of a sensor unit and a receiver unit with built-in speakers, along with some mounting gear.

The sensor unit can be mounted at the edge of a driveway, walkway, porch, or other area, and then when something breaks the infrared beam, the receiver emits one of your choice of one of dozens of chimes, sound effects, and melodies, alerting you that something has entered your property.

This receiver unit is their long-r...