Easy-to-adjust sensors activate dual sets of bright LED lights when they detect motion in two directions. This keeps the unit from going off more often than it needs to, which helps keep people from becoming habituated to it and failing to notice it. Perfect for blind corners where collisions are likely to occur. A great way to increase facility safety and reduce employee injury. Power is supplied through a pre-installed power cord. Cord length options are available below. If you wish to hardwire the sensor into your electrical system choose the Universal Transformer option.