What kind of electrical relay would be ideal for simply turning on a light?

I'm doing some experimenting with wiring lighting to electronics. I'm starting by trying to wire an alarm clock so that it turns on the lights when it begins going off. I know that I need a relay that the low voltage current within the alarm clock can trigger but I don't know what type of relay is... show more I'm doing some experimenting with wiring lighting to electronics. I'm starting by trying to wire an alarm clock so that it turns on the lights when it begins going off. I know that I need a relay that the low voltage current within the alarm clock can trigger but I don't know what type of relay is ideal for this. I've worked with contactors that trigger motors before, but never lighting.

Anyone with some electrical know how think they can give me some advice?
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