Ceiling Mounted Infrared Motion Sensor (occupancy detector, PIR, auto sensor) Ceiling Mounted Infrared Motion Sensor ((occupancy detector, PIR, auto sensor)1. Convenient Installation2. ... ~1000lux (adjustable)Detection Distance 360°,radius 3.2m at an mounting height 3m (<22)ContactingContact sec, NO, 10AInstallation Height 2 ... High:28mmWorking Humidity<93%RH Ceiling Mounted Infrared Motion Sensor