Emerson 70 Series Classic, Non-Programmable, Single Stage (1H/1C) Thermostat Model #RB-YRD540-WV-619 2-3/8" backset: 1" X 2-1/4"

2-3/8" backset: 1" X 2-1/4" faceplate

5 in H x 2

SIMPLE PULL STARTS: Easy Start Technology

and 2 AC ports

Emerson 70 Series Classic, Non-Programmable, Single Stage (1H/1C) Thermostat Model #RB-YRD540-WV-619 2-3/8" backset: 1" X 2-1/4"The Emerson 1F78 144 single stage thermostat has an easy to read digital display. This non programmable thermostat works with most single stage heating and cooling systems. It is for use on 24 Volt and millivolt systems. Not compatible with electric baseboard heat and some other systems. Easy to read digital display with backlight Non programmable thermostat Compatible with single stage heating, cooling and heat pump (without aux) systems Precision