You have a three way switch in your hand ... which is used in conjunction with a second three way switch. The two black screws are called the travelers (and are connectedd together). The brass screw on switch #1 gets load (work) and the brass screws on #2 gets line (power).
If you are only turning a light on at one location, you need a single pole switch. Basically, you break the black wire with the switch.
If you need more assistance than this, post a comment.
Answers & Comments
You have a three way switch in your hand ... which is used in conjunction with a second three way switch. The two black screws are called the travelers (and are connectedd together). The brass screw on switch #1 gets load (work) and the brass screws on #2 gets line (power).
If you are only turning a light on at one location, you need a single pole switch. Basically, you break the black wire with the switch.
If you need more assistance than this, post a comment.
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