STR International AGAT-SP5 The STRAGAT-SP5 Series are high end microwave radar-sensors with adjustable detection field and width settings as well as a range of 131 to 262 feet with a 16 foot wide beam. It's ability to work in extreme temperatures (-40 to 130 F) and it's economical power consumption (60mA) make these units stand out in the field! These detectors are designed to monitor their protected zone for movement and continuously “learn” and adjust to changing weather and terrain conditions including 1 foot of grass, and snow up to 2 feet! The alarm sounds if person moves within the protected zone, if the unit's case is opened or powered off, and if power reduces under 10.2 volts DC. Agat series are volumetric detectors, constantly sensing mass and size in the protected field, making them perfect for protecting enclosures, small foot print areas, backyard or apartment swimming pools, rooftops and helipads! Below, you can see an example of a helipad being protected. Kits come complete with transmitter, receiver, and mounting hardware!