– Smart electric construction belt tester can quickly distinguish true and false ground wires. – The probe is specially equipped with hole pins, which can pierce the wire coat and measure the voltage, which is faster and more convenient. – Two light alarms: the detection results can be seen at a glance without reading the code. – Three modes: network mode, wire stripping, and electric measurement. – More functions to meet more scenarios. – Self-test function: It will automatically detect the function of the instrument after each power on to ensure the accuracy of the test (power on without wires). – The function of the self-test button: the user can manually start the self-test of the instrument by pressing the self-test button. – Widely used in communication engineering, electricity, home improvement and other industries.