درونبست در کلیدزنی
Sign in to saveAlso known as trapped-key interlock system
use of locks and keys for sequential control of equipment and machinery to ensure safe operation
Wikidata facts
- Instance of
- railway signalling system
- Image
- Trapped key interlock transfer block.JPG
Show 2 more facts
- facet of
- access control
- Commons category
- Trapped-key interlockings
via Wikidata · CC0