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 Several PIR switches can be wired in parallel. Adjustable photocell override for bright days Dimensions (mm): 86 x 86 x 22