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标题: How to Test Industrial Relay with Multimeter – A Step-by-Step Guide Industrial relays play a crucial role in controlling electrical circuits across various industrial applications. They act as switches that can open or close circuits, enabling automation and protecting sensitive equipment from overloads or faults. Ensuring that a relay is functioning correctly is essential for maintaining the reliability and safety of an industrial system. One of the most effective ways to test a relay is by using a multimeter. This article provides a comprehensive, step-by-step guide on how to test an industrial relay with a multimeter.