I've read from other post to stay clear from it. Personally, I don't have experience with that detector. I can tell you that h10pm is good portable refrigerant detector that's a work horse. Parts are readily available for the H10pm. Draw backs are that most times you'll be using two hands to hold it, initial cost a higher when buying new and some techs have difficulties when testing for 410a leaks.
I also hear good things about Fieldpiece's IR refrigerant detector.