断路
3.Functions include OPEN/SHORT test, MIS-WIRE test, CONTINUITY test, ISOLATION test, INTERMITTENT OPEN/SHORT test.
5.A break anywhere in the circuit may cause the lights in the neighbourhood to go out.
7.Before installing cover plate, a continuity test should be performed to assure that switches are properly set.
9.A defect in a circuit or wiring caused by imperfect connections, poor insulation, grounding, or shorting.
10.SEARCH PROBE - user can easily execute point-search function and fixture (jig) OPEN/SHORT inspection.

