Line Voltage Thermostat ETD9STS

The ETD9 Two-Position Room Thermostats are designed for on/off control with set points from 50 to 90 deg F. The ETD9STS is a heating/cooling thermostat and uses a snap-acting switch for line or low voltage applications.

  • Voltage: 24-277 VAC
  • Heat OR Cool SPDT action (choose when wiring)
  • Current: 22A @120-277VAC resistive
  • Differential: Htg-2 deg F, Clg-4 deg F
  • ContactS: SPDT snap-acting
  • With built in thermometer
  • UL, CSA Approved
model description usually ships 1-4 units 5+ units QTY
ETD9STS Mechanical room thermostat. Heating or cooling action. Line or low voltage applications. 1 Day. In-stock $35.40 $34.40
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• Single Pole, Double Throw, Heat/Cool, Line voltage
• With built in thermometer
• Heat or cool (choose by wiring to either terminals)
• Application: Indoor-Residential/Commercial/Some Industrial
• Celsius and Fahrenheit temperature scale
• Heating: 22A @120-277VAC resistive
• Cooling: 3/4HP @ 125VAC / 1.5HP @250/277 VAC
• Range: 50-90 F 
• Features: Celsius and Fahrenheit Temperature Scale
• Standards: UL Listed;CSA Certified
• 1 year limited warranty

ETD9STS thermostat

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#1 Q:   I need a thermostat in my attic to control two attic fans and the original thermostats were removed so We could just turn on with a 110ac switch when in the attic rummaging through boxes. Will this unit work and mount to the wall or does it need a box mounted above the switch controlling the two fans. 110volt units.
A:   You need a thermostat with a higher temperature range. See the Fantech FAT 10 attic thermostat. These line voltage stats are typically mounted onto a metal box.

       Asked on 2023-01-18 by David
#2 Q:   I need to control a 120v bathroom fan and have it go on when the room reaches 80F. Can I mount this unit onto the existing in-wall electrical box?
A:   Yes you may...this unit is designed for a task like this. No extra relays needed so doubly good!

       Asked on 2020-04-05 by Michael
#3 Q:   Is there a switch on this unit to manually change from heat to cool?
A:   No. You wire it as either a cooling or heating thermostat (different contacts for intended operation).

       Asked on 2018-03-17 by Jim
#4 Q:   Does this thermostat have an off position?
A:   No, to shut it off without moving the setting, an on/off switch would need to be installed adjacent.

       Asked on 2014-08-10 by Vance

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