ARA Safety's Canadian distributor Commercial Solutions taped this amazing demonstration of how the powerful FIT-5 can knock down extremely hot fires. In the second half of the clip, you'll see the room go completely dark within 30 seconds of the FIT being deployed. (The fire was so hot, that one of the firefighters helmets was damaged - but the equipment did its job and no-one was injured.)
This is pretty cool technology...check it out..the clip runs 3:47.