I was disappointed with how poorly they measured low voltage (mV) signals of various frequencies. Signals up to 200 mV are best, though not quite correctly, measured with the cheapest but good value multimeter "Bside 102A"! The other two more expensive Bside ZT-M and ZT-X could not show.
Great product, would recommand it ! The crocodile test clips are useful to test big current as the wire is thicker