ITEM NAME:2pc Digital Socket Tester Voltage Test Socket Detector AU Plug Phase Check Description: This smart socket tester are mainly used to detect polarit of power socker and safety of leakage switch. It can quickly and accurately detect the wiring of the socket. Simultaneously,it can test socket voltage and show on LED screen. Main functions: VA color anti-display screen, leakage protection, zero firewire identificaton, automatic shut-down, non-contact detection The high-definition display can see the screen value clearly in the dark environment Specification: Size: approx. 64.5x64.5mm/ 2.54 inches Package Includes: 2 Piece Socket Tester(AU Plug) DMO0009299119527263.This smart socket tester are mainly used to detect polarit of power socker and safety of leakage switch. 2 Piece Socket Tester(AU Plug).