I am considering purchasing the HoldPeak HP-605C (6A/40A, AC/DC) to measure the parasitic drain on my vehicles. Typically, that's measuring 12VDC with current of 20 - 75mA and potentially up to 2A if there's a problem.
Rather than buy a (very expensive) full featured clamp meter that measures low current and offers data recording, I want to use this clamp adapter with a DMM I already own that measures low current and has a data logging feature.
With regard to the question about switching between 6A/40A, I can only speculate that this range setting is made on the DMM the clamp is connected to, not the clamp itself. Not sure if there would be some incompatability if the DMM has different range settings than 6A/40A, or if it's autoranging.
At this price, it's a good value if it really works, has decent documentation, and you can get the mfg to answer any questions that may arise. I'm hoping for a testimonial from others to give me some confidence on these points. I know, unlikely...