White-Rodgers 1C21-101

White-Rodgers™ 1C21 Low Voltage Setpoint Non-Programmable Thermostat, 50 - 90 deg F, Snap-Acting, Bi-Metal Sensor


Manufacturer part number:



Emerson Electric

White-Rodgers™ 1C21 Non-Programmable Thermostat, Low Voltage, Setpoint 50 - 90 deg F, 2 deg F Heat, 4 deg F Cool Differential, Snap-Acting, Terminal Designations: R, Y, Bi-Metal Sensor, 1 Cool Stage, 24 VAC, 60 Hz, 0.15 - 1.2 A, Hardwired, Vertical Mount, White, 1-1/2 Inch L x 2-7/8 Inch W x 3-3/4 Inch H
  • Mercury free
  • Rugged snap-action contacts
  • Adjustable heat anticipator
  • Bi-metal thermometer
  • Heat/cool model includes switching subbase
  • Heat/cool model compatible with electric heat systems
  • MV to 30V, 50/60 Hz or DC electrical rating

Products specifications
Attribute nameAttribute value
Control Range50 - 90 deg F
Differential2 deg F Heat, 4 deg F Cool
Dimensions1-1/2 Inch L x 2-7/8 Inch W x 3-3/4 Inch H
Full Load Current0.15 - 1.2 A
ManufacturerEmerson Electric
Mounting TypeVertical
Number of Stages1 Cool
Power SourceHardwired
Sensor TypeBi-Metal
Switch ActionSnap-Acting
Terminal DesignationsR, Y
TypeLow Voltage, Setpoint
Voltage Rating24 VAC, 60 Hz