Sure, a PIR is simply a movement activated switch and can be used to power up anything upon detection of movement. (they normally also bolt on an adjustable countdown timer) You can also use just one PIR to supply power to dozens of LED floodlights :-)
Can I take PIR from my old halogen lamp and add it to an LED one without PIR, save me 7 quids... Just saying !!!??? (:I :/
What brightness is the light? ie. colour?
Can the pir be wired to switch on another slave light as well?
tsk. hardly. its an option for others wanting 20w version (flirt)