PIR Viewguard motion detector. Mirror optics. Anti-msking. Range 15 X 15m. Anti-masking function: Detect coverage, spray or covered with adhesive tape. Periodic self-test. Automatic walking test. Adjustable detection coverage. Working voltage Range from 8VDC to 15VDC. Electricity consumption of Vnom=12 V DC 0,6 mA. Dimensions 64 x 158 x 48 mm. Grade 3 environmental class II certified according to EN50131-2-2:2008.