Philips Hue Motion Sensor, Turns Your Hue Lights On / Off Automatically, Integrated Daylight Sensor Helps to Save Energy Type: Accessories App-Enabled: Yes Specifications: Daylight sensor: Passive InfraRed (PIR) with adjustable sensitivity Detection angle: 100 degrees Detection range: Average 5 meter - 16.4 feet Reaction time: Immediate (less than 0.5 s) Connection: Zigbee Light Link Batteries: 2 x AAA alkaline batteries (included) Battery life: 2-3 years Mounting positions: Free standing or mounted Dimensions: 0.79 x 2.17 x 2.17