Major parameter:
1) test continuity of two core/three core single plug wire
2) match withstand voltage tester to test the compression resistance
3) current leakage: 0.5/1.0/1.5/2.0/3.0/5.0mA
4) wire sensitivity≥10Pf
5) qualified has acousto-optic alarm
6) Unqualified: a、non-continuity: % meter show corresponding position b、bad pressure resistance: acousto-optic alarm
