I purchased a 510 terminator add-on from Not Cigs (Buzz) a few months and thought I would share my experience. Firstly it never worked, from the second I opened the package. This still irritates me, especially considering the $40.00 price tag. Second after contacting Not Cigs and sending it back with an RMA form I still haven't received a refund or a new product. Beware the terminator, nHaler sells a non-variable one for $20 but it actually works. 
