When was the Mears M7-D thermostat discontinued?

I could find nothing before 2008, so this is the contact number for Eaton Mears.

Support (http://www.eaton.com/us/en-us/support.html)


Toll-free phone within the U.S.
+1-877-ETN-CARE
+1-877-386-2273





Canada
+1-800-268-3578





International
+1-828-651-0786