The 250mA rating is likely on the trigger side of the coil, the output side of the relay is very likely much higher. It's not often that relays that can do 120 or 240v are rated in the 250mA range. Just saying.
Brew, what points are you touching exactly with the meter? It might be the two points you're touching are electrically common points when the relay is on, in which case the reading of 0V is correct and the meter isn't faulty.
Yeah man, on top of my relay it says "240v 5A" - which I thought was funny as the unit is marked on the outside as 110v. Must be the same relay for multiple models - maybe cheaper that way? The controller though, says 110v 5A - so I'm at a loss. I turned it on this morning (fry it if I cant use it) and my deep freeze is a nice 5C now. Unit is working great, and a little warm but not at all hot by any stretch.
The points I was touching with my meter were the two connections on the relay that have a solder line direct to the output posts which I wired to a receptacle. Of course I was being stupid and not making good enough contact with one of the leads on my meter - DOH! Now that I've figured that out, my meter is showing 119v and things are working... (unless something fry's - got water and a fire extinguisher handy!) We'll see how it performs today...