STAFF PROTECTION KEYSWITCH

Railway Staff Protection Keyswitch

Railway Staff Protection Keyswitch Railway Staff Protection Keyswitch :- Staff Protection Keyswitch(SPK) units are key operated switches with green LED indication light. It consists of two permanent traffolyte labels showing area that it protects. One will be affixed to the inside of the door and the other attached to the key hob. The Keyswitch has […]

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