GVDA GD101B Socket Tester RCD GFCI NCV Test Outlet Tester Voltage Tester , Have EU US UK Plug Ground Zero Line 30mA for choice,
also is one smart Socket Detector which measuring range is 30 to 250V
Description:
-The polarity detection of the three hole power socket wiring
-The protection function detection of the leakage switch
-It can quickly and accurately detect the wiring
-Widely used:fire protection/laboratory/factory/family
