Hi @APC_Steve  NBES0307 (In my case with NBWL0455) consumes 0.1ma @23v line (powered, no smoke) and 17.3ma @23v (smoke detected) + 0.4ma @5v sensor line. (probably no extra power needed typically but for fully loaded installations and long cables every extra 0.4 Watt in case of smoke detection may play a role. My another consideration is the power supplies those may lose their parameters with time. NetBotz equipment often work for years in hot conditions - capacitors in power supplies may give up quicker. So extra power won't be excessive and your recommendation in general is correct.)  ... View more

I will test it some day later (office limitations). We have a request to integrate 3rd party sensors and it's more complicated than I expected 🙂 Anyway all what the sensor do is pulling signal (0) to +5 and I don't remember any significant changes in power consumption.  ... View more

Hi Steve, just a tip, as I measured some time ago the smoke sensor 0307 consumes something less 10mA @24v. But the line between the pods may drop voltage so you are 100% right about redundant power supplies, ... View more