OPTEX infrared motion detector, outdoor, 2 pyroelectric elements, 12m range, 16 coverage zones and 90o angle. It is placed at a height of 0.8-1.2m. Detection speed: 0.3~1.5m/sec. Sensitivity: 2oC @ 0.6m/sec. It has 5 levels of distance adjustment and a temperature compensation circuit. Operating voltage: 9.5-18VDC, Consumption: 20mA @ 12VDC, IP55. Dimensions: H181.9 x W70.9 x D64.5mm.