This is a Danlers Ceiling Surface Mounted PIR Switch which is hard wired and ideal for solid ceilings.
Easy to install and suitable for mounting on a square pattress box
Loading: Up to 6 amps, (1500 Watt) of any type of load, including resistant, fluorescent or inductive lighting loads or up to 1 amp, (250 Watt) of fans
Includes a passive infra-red quad person detector which detects the movement of a warm body moving within 360° detection zone
Adjustable time lag function before switch off from 10 seconds to 40 minutes