EXTREMELY RELIABLE - Much time went into developing and testing our reliable Infrared outdoor driveway alarm wireless detector that will dependably alert you to activity around your property. False alarms are minimized by adjusting the sensitivity of the sensor “eye” with Switch. (Hi = 30ft,Low = 20ft.) See the owner’s instruction manual. Swivel mount to refine the focus and detection angle of the sensor. EXCELLENT QUALITY - Outdoor driveway alert sensor system is made with industrial-grade PVC housing, rubberized weather/water-resistant seal, and a runs on one solar rechargeable. SUPER LONG RECEIVING RANGE - We use newer technology components and excellent manufacturing techniques. Our system has been real-world tested in settings with trees, buildings, walls, and vehicles. It easily achieves a 1500FT wireless range in most conditions. It is been tested through thick forestry, hail storms, gusty winds, heavy rains, scorching heat, and snow. EASY TO INSTALL- Quick Start Guide has you operational in minutes. Can expandable up to 4 sensors and unlimited receivers for complete coverage of your perimeter. Wireless driveway alarm Detects movement from humans, cars, and large animals. There are 4 fun & unique chimes to choose from. Match different chimes with different sensors around your property to differentiate where driveway alarm wireless motion is being detected. NOTE:The receiver is powered by an adapter (the package only includes a data cable, not an adapter. You need to use your own 5V 1A adapter).