All M4 Series handhelds provide convenient electrical signal measurement and sourcing. Measure A+50V or A+100mA, source 24VDC, sink V, or source precise VDC or mA DC values using the supplied test leads. Accuracy is A+(0.015% of Reading + 0.002 units) over the entire operating temperature range. Source or sink values are easily entered using the Adaptive Interface Wheel and right arrow function key.