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Graded Door Contacts


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Problem with long loops is when they fault, even using that black curly lead designed for machinery.

Old days we used to use a plug and socket, close door insert plug in the way if door opens it pulled out plug, there was also a contact on the door, and if fitted a contact on wicket gate all fed by the plug and socket. Double pole but obviously not 24 hr tampered.

I suppose today using a shunt box to bypass the tamper it could still be done, not sure if regs would be happy - one for James mrethinks ;).

Arfur

If you think education is difficult, try being stupid!!!!

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Still say forget loops. As RF is probably being used do it that way. Less to go wrong IMHO.

tbh I'd be with you, G3 possibly is the problem.

I wonder how rubust wireless would be, never tried it in what would be a pretty hostile siuation just due to the shuttr vibration alone.

could be a problem with batteries losing connection intermittently.

Arfur

If you think education is difficult, try being stupid!!!!

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