Fortress Security Store Guardian Stand-Alone Alarm Wireless Sensor Security System

The infrared motion detector is result of innovative technology. The gorgeous tiny unit comes with a built-in loudspeaker siren which can detect a motion to up to 110 degrees and 25 feet side-to-side. Any movement in the aforementioned area will activate the security alarm. Apart from this, the Guardian works seamlessly with almost 20 other accessories and avails you added protection.