How is the smoke alarm wired? And how is it encoded?
Generally, two buses are used for power supply and communication. Smoke detectors, temperature detectors, manual alarm buttons, input modules and output modules are connected on the bus in parallel
Many manufacturers of the bus part of the polarity of the direct wiring, not short circuit can be; some manufacturers of the bus is sub polarity, wiring is also sub polarity. Coding is related to the manufacturer, and almost every manufacturer is not compatible with the electronic encoding method.
