White Rodgers 1E78-140 Thermostat This Marley thermostat is verified

This Marley thermostat is verified for use with QMark and Berko models DH1521D

If the 50418 limit switch is tripping

extending the component's operational life

Red signifies a

The Lennox 25J30 is a heavy-duty

White Rodgers 1E78-140 Thermostat This Marley thermostat is verifiedThe White Rodgers 1E78 140 Thermostat provides a rugged, field proven solution for single stage heat only systems. Operating on 24V low voltage or millivolt systems, this vertical non programmable unit is the preferred choice for technicians replacing older mechanical mercury thermostats in residential or light commercial applications. Its digital LCD backlit display offers high contrast visibility, ensuring accurate temperature readings within a 1