Ceiling passive infrared Motion Detector detector. 10 meters radio with 18 curtains. Outputs: Alarm (NC) and Tamper (NC). Installation height: 2.5 to 5 meters. Field of vision 180º or 360º. Power source: 12VDC. Working temperature: -18ºC a 55ºC. Dimensions: 138 x 66 mm. Security grade 2 certified.