my presence. I have the switch in a fixed "on" position, the indicator light tells me the switch is on, so I'm not interested. It also gives me the option to turn them off if and/or when I choose. The only complaint I have is that the instructions use the battery icon for the load, which can be confusing as the battery icon usually indicates a power source. just be careful I would buy them again but I don't have to now - I have a few left over from the 5 pack.