WIDE RANGE OF APPLICATIONS : The wireless weather resistant motion sensor can be used to monitor&protect your outdoor/indoor property. Such as driveway, front porch, gate,pool,garage,shed and etc. For home, business,and office.The sensor will work properly at all the seasons. Working temperature range from -30 to 150 degree Fahrenheit. 1/2 MILE LONG WIRELESS TRANSMISSION RANGE : Both the motion sensor and plug-in receiver pick up alarm signals up to 1/2 mile away(actual range will vary depending on the local terrain), it is a solution even you have a large perimeter or property to monitor. The system adopts improved wireless transmission technology(FSK+FHSS) to avoid the wireless signal interference from other devices. 50-FT WIDE MOTION DETECTION RANGE : The motion sensor will detect moving people or vehicles from 35 feet to 50 feet in front of it. Improved motion detection chip and detection angle to reduce the false alarms from dead leaves/small animals/sunlight/wind/temperature changes and etc. It has 2 adjustable sensitivities( Low=35ft; High=50ft), ideal for driveways, walking paths,yard,garage,gate,pool and anywhere of your outdoor/indoor property you want to be alerted. PLUG&PLAY : Power on the motion sensor by 3pcs AA 1.5V Alkaline batteries(the package does not include the batteries) and plug the receiver into the outlet,here we go. The unit has been programmed before shipped, place the sensors to walls, fence posts, trees, or any other surface,the installation time can be as little as a few minutes.