An inconspicuous reliable 35 meter external passive infrared detector that works in conjunction with the GJD security lighting controllers, The OPAL XL is encased in A robust high impact ABS housing, Digital asic/microprocesor control, No, 1 output (‘a’): open collector -ve switching – 25mA max, Alarm period 400ms, No 2, Output(‘s’): open collector -ve switching – 25mA max, Alarm period: detection + 60 seconds, Adjustable: dusk (2 lux) to 24