This ceiling mounted PIR Motion Detector has a 360° coverage angle and a 6 metre detection radius when at a height of 2.2 to 4 metres. It’s capable of detecting infrared emissions from any heat source without emitting any radiation.
The detector activates its output circuit when a heat source moves in front of the switch and deactivates when the heat is no longer detected and some time has passed. 

Detection Angle: 360°
Detection Distance: 3 to 6 metres.
Minimum ON time: 10 seconds ±3 seconds.
Maximum ON time: 7 minutes ±2 minutes.
Installation Height: 2.2 to 4 metres.
Detection Speed: 0.6-1.5 m/s.
Charges: 300W LED and 1200W Incandescent.