I had bought this switch for something, though I don’t remember what. So I thought that since the reversing lights are very bright and I do not need to go driving about with them on accidentally, that I should use this switch to give me some feed back. Also the reversing lights serve as work lights, so they do not go off when the ignition goes off, as I might accidentally leave then on if I’m not looking.
We chose to replace our old style bathroom extractor fan with one that is controlled based on humidity rather than on time. As the fan is there to remove humidity, it might as well be controlled by the humidity levels rather than by whether or not a person has put the light on. This is old at the top and the new C4HTSR at the bottom of the photo, the sensor and control board is the only difference between the two models.
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