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Website Help Center
What is a mechanical lock?
A mechanical lock is used in some electromagnetically lock safety door switches, whereby the switch locks automatically when the operating key is inserted.
The lock is released when electricity flows to the solenoid.
A release key can be used to release the lock during power stoppages.
Applicable models:
D4BL-[][][]A Guard Lock Safety-door Switch
D4BL-[][][]B Guard Lock Safety-door Switch