Without knowing brand/model, you're going to have one helluva time finding anything out about this beast.
The red light could be anything from "The outlet is hot, so the rest of the sockets are too" to "The EMI/RFI function has died", or anything at all in between.
The green light being on/off may or may not mean anything. Could be that at one time, it indicated the EMI/RFI filtering was good to go. Could mean that something is plugged into it. Could mean darn near anything at all.
Sorry, guy, but I really don't think even a guru can help you without having more information about the thing.
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