SICK TR4-SDM01CB Safety Switch With Door Interlock

The SICK TR4-SDM01CB Safety Switch With Door Interlock is an RFID-based door interlock from SICK’s TR4 Direct family (model 6070805) that ships with the actuator included and uses a Valox housing for rugged industrial use. It features universal coding to maximize compatibility with TR4 accessories, a 15 mm sensing distance (Sao), and an 8-pin M12 connector on a 0.2 m cable for straightforward integration into safety circuits. Built to endure harsh environments, it carries IP67 and IP69K ratings, making it suitable for machine enclosures, conveyors, and packaging lines where a reliable door interlock is required. As a transponder safety switch, it provides robust door monitoring to support safe enabling and stopping sequences in safety relays, with design emphasis on large door offset tolerances to maintain reliability even with some misalignment. Some listings note SIL 3 / Category 4 compliance for safety systems that incorporate the device, reflecting its role in higher-integrity safeguarding architectures.