I called White-Rodgers (Emerson) and was told this was a direct replacement for the discontinued model I had. They were correct down to the mounting holes being in the exact same location. It even has the red jumper wire pre configured in the proper location. After powering down the AC/Heating system it took a whole 10 minutes to do the swap. It probably would have taken less time if I did not have fat fingers. The written instructions are not very helpful unless you know how to read schematics. The best thing to do is take a cell phone photo of the old connections and match them up on the new one. The only bump I encountered was the fact that my old one had screw head terminals where the wire is shaped like a”C” and secured under the screw heads. The new one has terminals that grip the wire
Direct Replacement for White-Rodgers 1F86-244