[TechnoViking]

All of the pins within a copper pad should have continuity.

You should also get continuity from one pad to the next depending on the state of the relay.

There may be a diagram on top of the relay showing which pins are which.

N.O. is Normally Open, N.C. is Normally Closed.

You should get continuity (and coil resistance) across the relay coil.

You can actuate the relay by putting voltage on the coil and test the continuity through the relay contacts.

(ALTHOUGH, testing relay functionality with a multimeter is tricky as you may not have enough "minimum load" across the contacts to get a reading. Actuating the relay many times may scrub the contacts clean in this case.)

You should hear/feel a click when the coil is actuated, and the relay changes state.

Hope that helps!

Martin