Honeywell T921A Proportional Thermostat, 3-Wire, 56 - 84 deg F, 1 Heat/1 Cool Stage, 20/30 VAC, 1 Relay Outputs, Vertical Mount, Gray, 2-1/4 Inch L x 3-3/8 Inch W x 5-11/16 Inch H, Includes: Slotted Sides and Add-on Faceplate
- Bellows element adjusts potentiometer slider to regulate motor operation
- Removable setting knob prevents unauthorized tampering with setpoint
- Analog display
- Output signal 135 ohm potentiometer
- 2.5 deg F automatic changeover dead band
Application: Valve Motors, Damper Motors And Balancing Relays