Relays are essentially electrical switches that are activated by an input signal, commonly from a low-voltage control circuit. Once activated, they switch on or off a higher-power circuit. These devices are widely used across different sectors, from controlling machinery in factories to ensuring safety and efficiency in automotive and household appliances. Due to their integral role in such systems, any failure in relay operation can lead to significant system malfunctions or safety hazards.

    Relay functional testing ensures that relays behave as designed, providing confidence that they can handle their designated tasks within a given system. It checks that relays switch in and out correctly, maintain appropriate timing, and meet required electrical standards. Additionally, the testing process helps identify potential issues in relays before they cause system failures, saving both time and cost in repairs or replacements.