Hytronik HIR28/R+HA08 Recessed Switching Absence/Presence PIR SensorHytronik HIR28 R+HA08 Recessed Switching Absence Presence PIR Sensor (With New High Back Cover) A high quality sensor for simple on off occupancy control or providing semi automatic (absence detection) control. An intelligent photocell is also included to prevent switching of the lights when natural daylight is availible Set up of the sensor is carried out using a remote control handset with program memory allowing one key commissioning where common