New answers tagged fire-sprinkler
The main rule you have to worry about is the rule about combining low voltage and high voltage wires in the same raceway (pipe). Even though the signal wire is 9volt, is has to be treated as if it had 120v on it. Whatever contraption you make has to isolate that voltage from outside it. So simply connecting a 9v wall-wart to it is no good - if there was ...
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