It's a DNA chip, I'd recommend watching some videos on how to operate the DANA chip. I think you need to lock it and then when you press up/down in locked mode it switches power modes.
Hold the +& - it will say temp locked. Then hit the + or - twice and you can step through the profiles with the + or - .
Fire button to exit and vape.
I would suggest going to evolvs web site and get the software and the PDF explaining the functions. The DNA 75 can only be programed with a computer. Do a search of this forum as there are mega threads on the DNA chips.