ELCO offers comprehensive safety relay modules for monitoring safety curtains, safety area laser scanner, emergency stop buttons, safety doors, etc. The SR22 series safety relay modules comply with the safety level standards of ISO13849-TYPE 4 and IEC61508-SIL 3. They can connect the output of photoelectric safety products, such as safety curtains and safety laser area scanner, to the safety circuits of the equipment control system, enhancing the overall safety level of the loop and ensuring high safety and reliability.