Safety relays are devices used in industrial settings to monitor safety circuits and ensure the safe operation of machinery. They are designed to detect faults and respond by shutting down equipment or activating safety measures, thereby preventing accidents and protecting workers. Safety relays are often part of a larger safety system that includes components like emergency stop buttons and safety sensors. These relays operate by receiving signals from safety devices and processing them according to predefined safety standards. If a fault is detected, the safety relay will interrupt the power supply to the machinery, ensuring that it cannot operate until the issue is resolved. This makes safety relays essential for maintaining a safe working environment in industries such as manufacturing and construction.