96601989 SENSA DDP BATTEN The SWITCHLITE SLD BATTEN PIR Presence/Absence Detector for batten luminaires provides automatic control (on/off switching) of lighting loads. It can be used on DSI/DALI digital dimming ballasts to control the light output of luminaires that are fitted with dimming ballasts. The detector measures the overall light level in the detection area and calculates the correct output for the luminaires, to achieve a pre-set lux level (maintained illuminance). This detector is suitable for installation with batten luminaires. Installation height is up to 7 metres.