Definition of indicator light
Operation: When the instrument is running normally, the indicator light flashes and leaks electricity. When the instrument detects a short leakage in the protected circuit, the indicator light stays on. Over temperature: When the instrument detects an internal over temperature protection, it closes and the indicator light stays on. Voltage: When the instrument detects an over/under voltage protection or closes, the indicator light stays on. Overcurrent: When the instrument detects an over-current overload protection, it closes and the indicator light stays on. Short circuit: When the instrument detects a short circuit protection, it closes and the indicator light stays on.