White Rodgers 1E78-140 Thermostat 000-ohm thermistor measured at 77

000-ohm thermistor measured at 77

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

preventing the overheating that occurs when a stroke is physically restricted

A standard 4mm Allen wrench is needed to remove and secure the cartridge within the Sporlan Q valve body

White Rodgers 1E78-140 Thermostat 000-ohm thermistor measured at 77The 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