The IDEC HR1S-AK311144 Safety Relay is engineered for high-level safety with compliance to EN ISO 13849-1 PLe, Safety Category 4, and EN 62061 SIL 3 standards. It offers both removable and fixed terminal models to accommodate various installation needs. The unit features LED status indicators for easy monitoring and finger safe protection for enhanced safety. Designed for 35mm-wide DIN rail mounting, it facilitates secure and straightforward installation. Additionally, the relay boasts an impressive MTTFd of up to 210 years, ensuring long-term reliability in critical stop 0 & stop 1 safety applications.