Is there a trigger handle to turn off and on
no betty, stupid bit of kit imo, no operating switch, just on/off at the switch, which heats the water up. i measured 500ml of water heated using my kettle, put the top on, switched on, and waited. first time the steam didn't come out of the nozzle, so i removed the end and cleaned the nozzle with water, blew down the end from the big end, and replaced it, steam came out. big grumble though, the steam coming out is not that warm, don't advise you to, but i directed against my fingers, it's only hot at the exit of the pointing bit, used it to try and clean floor tiles and grout, complete waste of time. i wouldn't advise anyone to buy one.