Stupid simple. I watched a unit being used at a shop, ordered this and was able to properly diagnose an evap leak for a customer.... paying for the machine on the first go!!
Power up with 12 volt battery and you are ready to pressure test and/or smoke leak test. Well.made and easy to use. Plenty on adapters are included. Thank you for an excellent product.
Definitely already paid for itself, nicely made and worked great. Would be nice if it came with a few hose adapters for the included accessories but worth the money either way
Jim 
