Overview
Digital Cooling Thermostat Outlet for Attic Fans, Exhaust Fans & Ventilation Control
YeloDeer Digital Cooling Thermostat Outlet with Timer is a plug-in fan controller designed for cooling and ventilation applications. It automatically powers connected fans when the sensed temperature rises above your set point, helping remove trapped heat and improve airflow.
This product is ideal for attic fans, gable fans, roof fans, exhaust fans, inline duct fans, greenhouse fans, grow room fans, garage fans, workshop ventilation, server rack cooling, and other fan-based cooling applications.
Unlike the heating thermostat version, this cooling thermostat is designed to control fans and ventilation devices when the temperature is too high.
Key Benefits
• Designed for cooling and ventilation control
• Plug-in design, no wiring required
• 6.6 ft external sensor probe for flexible placement
• Digital temperature display for more accurate control than mechanical dials
• Turns fan on when temperature rises above the set point
• 0–10 hour timer function
• Forced cooling mode for continuous fan operation when needed
• Adjustable temperature differential
• Sensor calibration supported
• Fahrenheit and Celsius display switch
• 120V AC plug-in outlet controller
• 15A / 1800W max resistive load
• Helps automate attic, greenhouse, grow room, garage, and workshop ventilation
Best For
• Attic fans
• Gable fans
• Roof fans
• Exhaust fans
• Inline duct fans
• Greenhouse ventilation
• Grow room airflow control
• Garage fans
• Workshop ventilation
• Server rack cooling
• Pet area ventilation
• Hot storage room airflow
• Fan-based cooling systems
Important Before You Order
This product is for fan and ventilation control.
It is designed to power a fan when the sensed temperature is too high and stop the fan after the temperature drops according to your settings.
It is not intended for compressors, air conditioners, refrigerators, freezers, or other compressor-based cooling equipment.
If you need to control a heating device, pipe heat tape, heat mat, heater, or incubator heater, choose YeloDeer Digital Plug-In Thermostat with Timer instead.
Cooling Thermostat vs Heating Thermostat
Choose this cooling thermostat if you want to control:
• Attic fan
• Gable fan
• Exhaust fan
• Inline duct fan
• Greenhouse ventilation fan
• Grow room fan
• Garage fan
• Workshop fan
• Server rack fan
Choose the heating thermostat if you want to control:
• Pipe heat tape
• Heating cable
• Heat mat
• Heater
• Warming pad
• Incubator heater
• Drum heater
The two products may look similar, but their control logic is different. Please choose based on whether you need cooling / fan control or heating control.
Applications & Compatibility
Recommended Applications
YeloDeer Digital Cooling Thermostat Outlet is designed for fan-based cooling and ventilation control in residential, hobby, grow room, greenhouse, garage, workshop, and technical cooling applications.
Common applications include:
• Attic fan automation
• Gable fan control
• Roof fan control
• Exhaust fan control
• Inline duct fan control
• Greenhouse ventilation
• Grow room cooling
• Garage ventilation
• Workshop fan control
• Server rack cooling
• Equipment room airflow
• Pet area ventilation
• Storage room heat removal
Attic & Home Ventilation
Attics can trap heat, especially during summer.
This controller can help automatically turn on a connected attic or exhaust fan when the attic temperature rises above your set point, helping move hot air out of the space.
Greenhouse & Grow Room Applications
For greenhouses and grow rooms, this cooling thermostat can help manage airflow by controlling ventilation fans based on temperature.
It can be used with:
• Inline duct fans
• Intake fans
• Exhaust fans
• Circulation fans
• Greenhouse fans
Technical Cooling Applications
This controller can also be used where fan-based cooling is needed, such as:
• Server racks
• Equipment rooms
• Workshops
• Garages
• Pet areas
• Utility rooms
Compatibility
This product is designed for plug-in fan and ventilation devices within the rated load.
Before use, check:
• Fan voltage
• Fan wattage
• Current draw
• Plug type
• Whether the fan can safely cycle on and off
• Whether the fan is not a compressor-based appliance
Do not exceed the rated load.
When Not to Use This Product
This product is not recommended for:
• Heating device control
• Pipe heat tape
• Heat mats
• Incubator heaters
• Compressors
• Air conditioners
• Refrigerators or freezers
• Dehumidifiers with compressors
• Hardwired fans without a proper plug
• Devices that exceed the rated load
• Outdoor use without weather protection
• Critical safety systems
For heating control, choose YeloDeer Digital Plug-In Thermostat with Timer.
Specifications & Sizing
Product Specifications
Product Type: Digital plug-in cooling thermostat outlet
Application: Fan and ventilation control
Control Logic: Cooling mode
Sensor Probe Length: 6.6 ft
Timer: 0–10 hours
Voltage: 120V AC / 60Hz
Max Load: 15A / 1800W resistive
Temperature Range: 41°F to 108°F
Display Unit: °F / °C switchable
Sensor Calibration: Supported
Temperature Differential Adjustment: Supported
Forced Cooling Mode: Supported
Compatibility: Ventilation fans only
Not For: Compressors or AC units
Installation Type: Plug-in, no wiring required
How Cooling Control Works
This thermostat uses the external sensor probe to measure temperature.
When the sensed temperature rises above your set point, the controller powers the connected fan.
When the temperature drops below the stop point based on your settings, it turns the fan off.
This helps automate ventilation instead of leaving the fan running continuously.
Understanding the Timer
The 0–10 hour timer can be useful when you want fan runtime control.
Common uses include:
• Running an attic fan for a set period
• Venting a greenhouse during hot periods
• Cooling a garage or workshop after use
• Running a fan during equipment operation
• Temporary airflow control
Forced Cooling Mode
Forced cooling mode allows the connected fan to run continuously when needed.
This can be useful for:
• Testing the fan
• Emergency heat removal
• Temporary ventilation
• Hot summer afternoons
• Equipment cooling situations
Probe Placement
Place the sensor probe where you want to measure the temperature that controls the fan.
For attic fans, place the probe in the attic air space away from direct sunlight or fan exhaust.
For greenhouses, place the probe near the plant zone or target air temperature area.
For server racks or equipment rooms, place the probe near the hot area you want to control.
Load Selection Reminder
Before connecting any fan, confirm the fan’s voltage, wattage, and current draw.
Do not exceed the controller’s rated load.
Do not use this product with compressors or AC units.
Installation & Accessories
Basic Setup Overview
YeloDeer Digital Cooling Thermostat Outlet is designed for simple plug-in installation.
Typical setup steps:
- Plug the controller into a 120V outlet.
- Plug the fan into the controller outlet.
- Place the 6.6 ft sensor probe in the target temperature area.
- Set the desired fan activation temperature.
- Adjust the temperature differential if needed.
- Set the timer if timed operation is needed.
- Use forced cooling mode if you want continuous fan operation.
- Confirm that the fan turns on and off as expected.
Attic Fan Setup
For attic fan control:
- Place the probe in the attic area where heat accumulates.
- Avoid direct sunlight on the probe.
- Avoid placing the probe directly in the fan exhaust path.
- Plug the attic or exhaust fan into the controller.
- Set the temperature where you want the fan to start.
- Test operation during warm conditions.
Greenhouse or Grow Room Setup
For greenhouse or grow room ventilation:
- Place the probe near the plant canopy or target temperature area.
- Keep the probe away from direct grow lights if they cause false readings.
- Connect the inline, intake, or exhaust fan.
- Set the desired cooling temperature.
- Adjust the differential to avoid frequent fan cycling.
Important Installation Notes
• Use only with plug-in ventilation fans within the rated load.
• Do not use with compressors, AC units, refrigerators, or freezers.
• Keep the controller dry.
• Do not place the controller or outlet connection in standing water.
• Do not exceed 15A / 1800W.
• Do not use damaged cords or plugs.
• Place the probe where it reflects the actual temperature you want to control.
• Always follow the fan manufacturer’s instructions.
Using the Probe Correctly
Correct probe placement is critical for reliable fan control.
For best results:
• Place the probe in the target air zone
• Keep it away from direct sunlight
• Keep it away from direct fan exhaust if that causes unstable readings
• Avoid placing it directly against hot surfaces
• Secure it so it does not move during operation
• Calibrate the sensor if the reading needs adjustment
Using with Extension Cords
If an extension cord is needed, use a properly rated cord suitable for the fan load and environment.
For attic or garage use, make sure the connection is secure and not exposed to water or damage.
Outdoor / Semi-Outdoor Reminder
If used in an attic, greenhouse, garage, shed, or semi-outdoor environment, keep the controller and plug connection protected from rain, dripping water, condensation, and standing water.
FAQ & Resources
Additional Product Questions
1. Is this thermostat for heating or cooling?
This model is for cooling and ventilation control. It turns the connected fan on when the sensed temperature is too high.
For heating equipment, pipe heat tape, heat mats, or heaters, choose YeloDeer Digital Plug-In Thermostat with Timer.
2. Can I use this with an attic fan?
Yes. This product is designed for attic fan and ventilation fan control. It can help automatically run the fan when attic temperature rises above your set point.
3. Can I use it with a gable fan or roof fan?
Yes. It can be used with compatible plug-in gable fans, roof fans, or exhaust fans within the rated load.
4. Can I use it with an inline duct fan?
Yes. It is suitable for many plug-in inline duct fans used in grow rooms, greenhouses, workshops, garages, and equipment rooms.
5. Can I use this controller with an air conditioner?
No. This product is not designed for air conditioners, compressors, refrigerators, freezers, or compressor-based cooling appliances. It is designed for ventilation fans only.
6. What is forced cooling mode?
Forced cooling mode lets the connected fan run continuously. This is useful for testing, temporary ventilation, or emergency heat removal.
7. What does the 0–10 hour timer do?
The timer allows you to run the fan for a selected period.
This can be useful when you want timed ventilation instead of continuous thermostat-based operation.
8. Where should I place the probe in an attic?
Place the probe in the attic air space where heat accumulates. Avoid placing it in direct sunlight, against a hot roof surface, or directly in the fan exhaust path.
9. Why does my fan turn on and off too often?
Frequent cycling may happen if:
• The temperature differential is too narrow
• The probe is too close to the fan
• The probe is in direct sunlight
• Airflow is changing rapidly
• The fan cools the probe area too quickly
Adjust the probe location or differential setting to improve stability.
10. Can I use this in a greenhouse?
Yes. It can be used with compatible ventilation fans in greenhouses or grow rooms.
Place the probe near the target air zone and away from direct sunlight or grow light heat.
11. Can I use this for server rack cooling?
Yes. It can be used with compatible plug-in fans for server racks, equipment rooms, or technical cooling applications. Place the probe near the hot zone you want to control.
12. Can I use it outdoors?
The controller should be kept dry and protected. Do not allow the controller, outlet, plug, or connection area to sit in rain, snow, condensation, or standing water.
13. Can I use it with a dehumidifier?
We do not recommend using this controller with compressor-based dehumidifiers.
It is intended for ventilation fans, not compressors.
14. What should I do if I am not sure whether my fan is compatible?
Please email yelodeer@yelodeer.com with:
• Fan type
• Voltage
• Wattage
• Current rating
• Application photos
• Desired temperature setting
• Whether the fan is plug-in or hardwired
Our team can help review whether this cooling thermostat is suitable.
Related Resources
For heating control, choose YeloDeer Digital Plug-In Thermostat with Timer.
For product selection help, contact yelodeer@yelodeer.com with your application details.
