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The SAFETY TECHNOLOGY INT'L INC SS2133EX-EN is a green key used to activate a door stopper mechanism. This type of keyed activator is commonly found in commercial and institutional door hardware applications where controlled access or timed door hold-open functions are required. The key interfaces directly with the stopper unit to engage or release the holding function, providing a simple mechanical means of operation for facility staff or trade installers. It is sold as a single unit and is intended as a replacement or spare key for compatible stopper hardware.
This key is suited for commercial buildings, schools, hospitals, and similar facilities where door stopper systems require keyed activation. It is typically installed or replaced by locksmiths, door hardware specialists, or general contractors working within the locksets and door hardware category. The green color designation is standard for identifying this key type within the stopper system it serves.
Designed as an OEM-style replacement key for compatible door stopper systems requiring keyed green-key activation. Refer to the stopper unit documentation to confirm key compatibility before ordering.
Installation and replacement of keyed door hardware components should be performed by a qualified locksmith or door hardware technician. Ensure the door stopper mechanism is in the disengaged position before inserting or removing the key activator. Follow applicable local building codes and manufacturer guidelines for door hardware servicing. Do not force the key into the cylinder, as this may damage the stopper mechanism.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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