Names of Parts
The  electrical tester can be used for measuring the current, voltage, and resistance of an electrical circuit, as well as to check the continuity of a circuit and testing diodes.

The following measurements can be performed by operating the function selector switch:
Alternating current voltage measurement
Purpose:
For measuring the voltage of household or factory power supply lines, alternating current voltage circuits, and the tap voltages of a power transformer.
Measurement method:
Set the function selector switch to the alternating current voltage measurement range and connect the test leads. The polarities of the probes are interchangeable.
Direct current voltage measurement Read more Electrical Tester ›