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标题: How to Test Industrial Relay with Multimeter | A Step-by-Step Guide for Accurate Measurements Industrial relays are essential components in many electrical and automation systems. They act as switches that control high-power devices using low-power signals, making them crucial in industrial machinery, motor controls, and safety circuits. Ensuring that a relay functions correctly is vital for the reliability and safety of these systems. One of the most common tools used for testing relays is a multimeter, a versatile device that can measure voltage, current, and resistance. This article will guide you through the process of testing an industrial relay with a multimeter, providing practical steps for both beginners and experienced technicians.