Clamp frequency function
Clamp head lighting function
Meet the safety requirements of GB4793.1-1995 (IEC-61010-1) electronic measuring instrument
DC Current: 40A/400A 2%, AC Current: 40A/400A 2%
DC Voltage: 400mV/4V/40V/400V/1000V 0.8%, AC Voltage: 4V/40V/400V/750V 1%