One-Mile Motion Detector and Receiver Kit

This motion sensor alarm kit sends an alarm notification to a receiver that can be up to 1-mile away. Of course the range is determined by the environment you put it in.

The motion sensor can detect a person or vehicle from 50 feet away.

The receiver can play one of 12 different tunes. The tune is actually set at the motion sensor so that way you can have multiple sensors and use the tune to identify which sensor has been triggered.