NOTE PLEASE-It is the extra solar wireless motion sensor which is compatible with HTZSAFE wireless alarm system; the sensor can not work alone, it should work with HTZSAFE alarm receiver. 1.The HTZSAFE solar wireless driveway sensor detects motion from people, vehicles or large animals. 2.The sensor is rechargeable battery powered and solar charges, no need replace the battery of the sensor. Monitors your property all the day and night. 3.The solar sensor is weather resistant, will work properly at all the seasons. Working temperature range from -30 to 150 degree Fahrenheit. 4.Up to 1/2 mile long wireless transmission range(ideal conditions),it is a great solution even to monitor the long driveway/large property/and etc; 5.Up to 70FT wide sensor detection range and 3 adjustable sensitivities(High=70ft,Medium=50ft,Low=25ft),ideal for driveways, walking paths,yard,garage,gate,pool and anywhere of your property you want to be alerted. Improved wireless transmission technology(FSK+FHSS) to avoid the signal interference from other wireless devices. 6.HTZSAFE focus on developing Solar Wireless Alarms more than 20 years, HTZSAFE has several kinds of solar transmitters and receivers which have different functions for different application and environment,and all the HTZSAFE products can work together. 7.Guaranteed 2-Years Warranty.