I bought this relay and tried splicing it into an extension cord. I'm in Australia so mains power is 240 so the 340 rated relay should be more than sufficient. Using this and also this also this page I know that in Australia the brown wire would be the live one. I confirmed this with a continuity test between the pin marked "L" and the brown wire.
When I plug everything (running the brown wire through the relay) in and use a lamp to test, the light bulb is flickering when the relay should be closed. You can see in the youtube video below that the light flickers despite the input there not even being anything connect to the bottom pins. If I run 5v across the bottom connectors on the relay the light turns on as it should.
What is going on here? Is this a case of a faulty relay or is there something I'm missing here?
PS: Reason this is on the arduino forum is I want to control this with an arduino, but I ran into problems before I even got that far! Any help would be greatly appreciated :)