kissbox auto switch goes out before cut off

[hazey mist]

hi all i have found that with the auto switch cuts off after 2-3 seconds which is before its auto cut of but if you put your finger over the l.e.d and play it like a flute you can get a good amount of vapour off it

 

[smoking gnu]

My auto switch works fine. If I put my finger over the led it wont work.