The AL40 Series family of motion detectors provide high quality security at an outstanding value. All AL40 models in the series provide Qualified Motion Analysis, Digital Operating System, Dual Slope Temperature Compensation and rock-solid RFI Immunity. Features QMA - Qualified Motion Analysis Rock Solid RFI Immunity Dual Slope Temperature Compensation Optional 100 lb Animal Immunity lens included. Current Consumption 4mA Multi-Function LED Ambient Temperature Detection Self Dimming LED Specs Type QMA – Qualified Motion Analysis Input Voltage 10.6 to 16VDC Input Current 15 mA maximum, 10 mA quiescent (approx.) Pyro Type Dual element Pulse Count 2/4 pulses (selectable) Warm Up Period 50 secs. max. Alarm Period 2.4 secs, retriggerable Visual Indicator Red Alarm LED (selectable on /off ) Alarm Output NC dsolid state, 19 VDC, 100 mA, 13 ohms resistance typ. Tamper Output NC, dry contact, 30 VDC, 500 mA, 5 W max. Mounting Height 6.5 to 8.5 ft. (2 to 2.6m) OperatingTemperature +14° F to +131° F; Humidity: 95% max. Dimensions 3.9″ (98mm) L; 2.5″ (64mm) W; 1.7″ (42mm) H Weight 3.0 oz. (83.5g)