Features: 1PIR detector with dual probes high capturing performance and strong antifalse alarm ability. 2It adopts wired infrared technology can be used independently doublewindow detection reminder of human activities. 3Detection range is about 7m detection angle is about 90 degrees high sensitivity stable performance. 4Antipet identification technology immune to pets under 20 kg prevent false alarms when pets pass by. 5Simple installation with low battery reminder the recommended installation height is about 1.82.4m. Specification: Item Type: PIR Motion DetectorMaterial: ABSWeight: Approx. 155g / 5.5ozProduct Size: Approx. 110x55x40mm / 4.3x2.2x1.6inBattery Parameters: Built-In 2 x CR2 Lithium BatteriesBattery Type: Lithium BatteryBattery Model: CR2Nominal Battery Capacity: 850mAhPet-Proof: 20kgFunction: Independent use no host/gateway anti-pet function dual-window detection human activity reminder low battery reminderQuiescent Current: 20uADetection Distance: 7m / 23ftDetection Angle: 90Working Environment: -10-50 5%-95% RH Package List: 1 x Detector2 x Screw2 x Expansion Tube1 x Bracket1 x Rubber Ring1 x Accessory1 x English Manual Note: 1. Please allow 0‑1 inch error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.