Hello there guys iv been tryin to wire a key switch to operate roller shutter doors but it proovin hard work the switch tht iv got is a telemecanique with 4 contacts indicating 3 and 4 on the green side 1 and 2 on the red side contact 1 say nc which indicates neutrel connection and no 3 contact indicates no thesupply coming in to the switch is.
Roller shutter door key switch.
Key switches are an ideal solution for operating a roller shutter shop front or industrial door from an external switch that requires a certain level of security.
Roller shutter external key switch protection box with open back.
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