Ceiling Mounted Infrared Motion Sensor (occupancy detector, PIR, auto sensor) Ceiling Mounted Infrared Motion Sensor ((occupancy detector, PIR, auto sensor)1. Convenient Installation2. ... . Adjustable Time Delay:10±5sec~30±4min5. Detection motion speed:0.6~1.5m/s6. CE, GS ... NO, 10AInstallation Height 2.5-5mDimension: Diameter:90mm High:28mmWorking Humidity<93%RH Ceiling Mounted Infrared Motion Sensor