NOTE PLEASE : It is the extra wireless motion sensor which is compatible with HTZSAFE wireless alarm system; the sensor can not work alone, it should work with HTZSAFE alarm receiver. | 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. Great 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 : The wireless range of the motion sensor is up to 1/2 mile(actual range will vary depending on the local terrain), it is a great solution even you have a large perimeter or property to monitor. The sensor 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. | SUPER EASY TO INSTALL : Power on the motion sensor by 3pcs AA 1.5V Alkaline batteries(the package does not include the batteries) and then place the sensors to walls, fence posts, trees, or any other surface,the installation time can be as little as a few minutes.