September 17, 20187 yr I need to replace a couple of PIRs and am looking at some which have eol resistors built in.They will be in a circuit wired in series - just the 2 - and there is already an eol resistor wired into the circuit at the panel.Can these PIRs be switched so that they show zero resistance as I am not sure what adding extra resistance into the circuit would be handled by the very old panel.
September 22, 20187 yr Its not good practice to have more than 1 detector per zone. If you do you cannot use detectors with resistors
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