Bosch Motion detector 360° Ceiling MountThe Bosch DS939 ceiling mount PIR detector delivers comprehensive, 360 degree panoramic coverage designed to protect large rooms, corridors, and commercial spaces with precision and reliability. With a reach of up to 21 m (70 ft), this detector provides a wide detection field while remaining unobtrusive when mounted on ceilings. It is engineered to perform on ceilings as high as 7. 6 m (25 ft), offering installation flexibility for a range of