The new SBB-4000 is a solar powered break beam sensor that works with any Dakota Alert 4000 Series receiver. The sensors can be located The MTPR-4000 is a complete kit containing one DCMT-4000 motion detector and one PR-4000 receiver. The PR-4000 gives you the freedom to be out and about on your property and still be alerted to some ones arrival. It has a rechargeable battery which can hold a charge for up to a week. up to 300 feet apart and will send a wireless signal up to a mile* any time a car or person breaks the beam. Each beam unit has two solar panels to help ensure proper charging throughout the day. Includes mounts for both a flat surface and pipe mount up to 1.5”. There is also a reminder signal every 20 seconds or 5 minutes any time the