The HS1L-DT44KMSRP-R is a safety interlock switch designed to keep machine guard doors securely locked. It features a spring lock mechanism that operates on 24V DC to unlock and provides a high locking strength of 3000N, making it suitable for heavy doors. The switch incorporates a 1NC+1NC main safety circuit, plus separate 1NC contacts for both door and lock status monitoring. It is equipped with a 24V DC red LED for visual status indication, a PG13.5 conduit port, and a manual unlock key for emergency access. This configuration is ideal for industrial safety applications requiring robust locking and detailed status feedback.