Comment on help needed to understand this diagram of a water flow sensor (from a boiler)
tofubl@discuss.tchncs.de 2 months ago5V or 4.68V input isn’t meaningful. The sensor has some input range and 4.68V most definitely falls into that. Could be a design choice that has no real implications.
On the other hand, if the device normally supplies 5V, just yours doesn’t, then that’s further evidence you have a faulty controller.