Wire resistance measurement:
①Turn the switch to the appropriate range of electrical blocking.
②Keep the switch in the open state.
③The red test lead is connected to the "Ω" terminal, and the black test lead is connected to the "COM" terminal.
④ Connect the red and black test leads to the two ends of the wire under test respectively. When measuring the resistance of the wire in use, the power supply should be disconnected first, and the capacitance connected to the wire should be fully discharged before the measurement.
Wire continuity test
①Turn the switch to 200Ω (or buzzer).
②The red and black test leads are respectively connected to the "Ω" terminal and the "COM" terminal.
③If the resistance between the red and black test leads is less than (50±25)Ω, the built-in buzzer will beep.
