Top Positive Review for Socket Tester on Banggood USA|Shopping USA

7% OFF MUSTOOL MT10S/MT10E Socket Outlet Tester Intelligent Detection Display Voltage Frequency RCD Tester US$11.49 US$12.41 View It

Overall:

Rik_Drabs 04/06/2020

It appears the measuring device has been designed for measuring one phase of a tri-phase 3x380/3x400 Volts system, which has 1x220/1x230 Volts between phase and Neutral. In that case the Neutral is at the same potential as the Ground, which is what the device apparently verifies for correct connection of the socket. In a 3x220/3x230 Volts system all one phase 220/230 Volts are at a potential of between 130/140 Volts to Ground, and the measuring device shows LIVE GROUND REVERSE & MISSING GROUND in a normal situation. In that state the device is useless for me. Is the device reconfigurable? I noticed a non-soldered connector J3 inside. More info please? The build looks professional.

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