1. Introduction
This manual provides detailed instructions for the Diymore Digital Thermostat Temperature Controller. This device is designed to precisely control temperature for various applications, offering both heating and cooling modes, along with advanced timing functions. Please read this manual thoroughly before operation to ensure correct usage and optimal performance.

Figure 1.1: Front view of the Diymore Digital Thermostat Temperature Controller, showing the display, control buttons, and power outlet.
2. Product Features
The Diymore Digital Thermostat Temperature Controller offers a range of features for versatile temperature management:
- Multiple Control Modes: Includes 5 distinct temperature controller modes: F01 (cycle timer), F02 (countdown ON), F03 (countdown OFF), and F04 (countdown ON and countdown OFF).
- Precise Temperature Control: Operates within a temperature range of -40℉ to 248℉ with an accuracy of ±1%.
- Heating and Cooling Functions: Capable of controlling both heating and cooling devices by setting start and stop temperatures.
- Timing Settings: Features cycle timing and countdown functions with a setting range of 0 to 99 hours and 59 minutes. Note: The thermostat function and timing function cannot be used simultaneously.
- Temperature Calibration: Supports temperature calibration for enhanced accuracy.
- Data Storage: Automatically saves all set parameters after power loss.
- Reset Function: Allows for easy resetting of settings.
- HD LED Display: Equipped with a backlit LED display for clear visibility, even in low-light conditions.
- Extended Sensor Cable: Includes a 1.7-meter (approximately 5.6 feet) sensor cable to meet various placement needs.

Figure 2.1: Overview of the thermostat's key features, including heating/refrigeration, high accuracy, backlit LCD, lock screen protection, backup memory, reset, memory, timing, and temperature calibration functions.
3. Product Overview and Components
Familiarize yourself with the main components and display elements of your thermostat controller.

Figure 3.1: Labeled diagram showing the display elements (Measured temperature, Start temperature, Stop temperature), control buttons (MODE, SET, UP, DOWN), output work indicator, and the temperature probe.
3.1. Display Elements
- Measured Temperature: Displays the current temperature detected by the probe.
- Start Temperature (ON): The temperature at which the connected device will activate (for heating) or deactivate (for cooling).
- Stop Temperature (OFF): The temperature at which the connected device will deactivate (for heating) or activate (for cooling).
- Output Work Indicator: An indicator light that illuminates when the connected device is powered on.
3.2. Control Buttons
- MODE Button: Used to cycle through the different operating modes (Temperature Control, F01, F02, F03, F04).
- SET Button: Used to enter setting mode and confirm selections.
- UP Button: Used to increase values or navigate menu options.
- DOWN Button: Used to decrease values or navigate menu options.
4. Setup
Follow these steps to set up your Diymore Digital Thermostat Temperature Controller:
- Unpack the Device: Carefully remove the thermostat controller and its temperature probe from the packaging.
- Connect the Probe: Ensure the temperature probe is securely plugged into the designated port on the side of the thermostat.
- Position the Probe: Place the temperature probe in the area where you wish to monitor and control the temperature. Ensure it is not directly exposed to heat sources or drafts that could affect readings.
- Plug in the Thermostat: Insert the thermostat controller into a standard 120V AC power outlet. The display will illuminate.
- Connect Your Appliance: Plug your heating or cooling appliance (e.g., heater, fan, lamp) into the power outlet on the front of the thermostat controller.

Figure 4.1: Front and back views of the thermostat, illustrating the plug-in design and integrated power outlet for connecting an appliance.
5. Operating Instructions
The thermostat offers various modes for temperature and timer control. Press the MODE button to cycle through the main operating modes.
5.1. Temperature Control Mode
This is the primary mode for maintaining a desired temperature range. The display will show "Measured temperature", "Start Temperature (ON)", and "Stop Temperature (OFF)".
- Set Start Temperature: Press the SET button once. The "Start Temperature" value will flash. Use the UP and DOWN buttons to adjust the desired activation temperature. Press SET to confirm.
- Set Stop Temperature: After setting the start temperature, the "Stop Temperature" value will flash. Use the UP and DOWN buttons to adjust the desired deactivation temperature. Press SET to confirm and exit setting mode.
- Heating Mode: If the Start Temperature is set lower than the Stop Temperature (e.g., ON at 20°C, OFF at 25°C), the device will operate in heating mode. The connected appliance will turn on when the measured temperature drops below the Start Temperature and turn off when it reaches the Stop Temperature.
- Cooling Mode: If the Start Temperature is set higher than the Stop Temperature (e.g., ON at 25°C, OFF at 20°C), the device will operate in cooling mode. The connected appliance will turn on when the measured temperature rises above the Start Temperature and turn off when it drops to the Stop Temperature.
5.2. Timer Modes
The thermostat offers four timer modes (F01, F02, F03, F04). These modes control the connected appliance based on set time intervals, independent of temperature. Note: The thermostat function and timing function cannot be used simultaneously.

Figure 5.1: Visual representation of the Temperature Control Mode and the four Timer Modes (F01, F02, F03, F04) with their respective display formats.
- F01 - Cycle Timer Mode:
This mode allows the appliance to cycle on and off repeatedly for set durations.
a. Press MODE until F01 is displayed.
b. Press SET. The "ON" time (hours/minutes) will flash. Use UP/DOWN to set the duration the appliance stays ON. Press SET.
c. The "OFF" time (hours/minutes) will flash. Use UP/DOWN to set the duration the appliance stays OFF. Press SET to confirm. - F02 - Countdown ON Mode:
The appliance will turn ON after a set countdown period.
a. Press MODE until F02 is displayed.
b. Press SET. The "CD ON" time (hours/minutes) will flash. Use UP/DOWN to set the countdown duration. Press SET to confirm. - F03 - Countdown OFF Mode:
The appliance will turn OFF after a set countdown period.
a. Press MODE until F03 is displayed.
b. Press SET. The "CD OFF" time (hours/minutes) will flash. Use UP/DOWN to set the countdown duration. Press SET to confirm. - F04 - Countdown ON/OFF Mode:
The appliance will turn ON after a first countdown, then turn OFF after a second countdown.
a. Press MODE until F04 is displayed.
b. Press SET. The first "CD ON" time (hours/minutes) will flash. Use UP/DOWN to set the ON countdown. Press SET.
c. The "CD OFF" time (hours/minutes) will flash. Use UP/DOWN to set the OFF countdown. Press SET to confirm.
5.3. Temperature Calibration
To adjust the temperature reading for accuracy:
- In Temperature Control Mode, press and hold the SET button for approximately 3 seconds to enter advanced settings.
- Use the UP/DOWN buttons to navigate to the calibration setting (often indicated by a 'CAL' or similar symbol).
- Press SET. Use UP/DOWN to adjust the offset value (e.g., +1.0°F or -0.5°F) to match a known accurate thermometer.
- Press SET to save and exit.
5.4. Reset Function
To reset the thermostat to factory default settings, locate the small reset button (often a pinhole) on the device. Use a thin object (like a paperclip) to press and hold the reset button for a few seconds until the display resets.
5.5. Data Storage
The device features a data storage function that automatically saves all set parameters. In the event of a power outage, your settings will be retained and restored when power returns.
6. Applications
The Diymore Digital Thermostat Temperature Controller is suitable for a wide range of temperature-sensitive environments and applications, including but not limited to:
- Greenhouses and grow tents
- Incubators for eggs or cultures
- Terrariums for reptiles and amphibians
- Fermentation processes (e.g., brewing, yogurt making)
- Heating mats for seedlings or pets
- Controlling RV heating or cooling units
- Maintaining specific temperatures in refrigerators or freezers
- Aquariums and hydroponic systems

Figure 6.1: Examples of common applications for the thermostat, demonstrating its versatility in different environments.
7. Specifications
| Feature | Specification |
|---|---|
| Brand | diymore |
| Model Name | Thermostatically Controlled Outlet |
| Product Dimensions (D x W x H) | 0.78" x 2" x 4" |
| Controller Type | Hand Control, Push Button |
| Temperature Control Type | Heating, Cooling |
| Temperature Range | -40℉ to 248℉ |
| Temperature Accuracy | ±1% |
| Power Source | Corded Electric |
| Voltage | 120V |
| Max Wattage | 1800W |
| Max Current | 15A |
| Display Type | LED with Backlight |
| Included Components | Temperature Sensor |
| Item Weight | 6.7 ounces |

Figure 7.1: Product dimensions, indicating a width of 5.8cm, height of 12cm, and depth of 3.5cm for the main unit, and a probe length of 2.5cm with a 0.5cm diameter.
8. Maintenance
Proper maintenance ensures the longevity and accurate operation of your thermostat controller:
- Cleaning: Wipe the device with a soft, dry cloth. Do not use abrasive cleaners or immerse the unit in water.
- Probe Care: Keep the temperature probe clean and free from debris. Avoid bending or damaging the probe cable.
- Storage: When not in use for extended periods, store the thermostat in a cool, dry place away from direct sunlight and extreme temperatures.
- Avoid Overload: Do not connect appliances that exceed the maximum wattage (1800W) or current (15A) rating of the thermostat.
9. Troubleshooting
If you encounter issues with your Diymore Digital Thermostat Temperature Controller, refer to the following common problems and solutions:
- Device Not Powering On:
a. Ensure the thermostat is securely plugged into a live 120V AC outlet.
b. Check the power outlet with another appliance to confirm it is functional.
c. Verify that the power cord is not damaged. - Inaccurate Temperature Reading:
a. Ensure the temperature probe is correctly connected and positioned in the desired measurement area.
b. Check if the probe is damaged. A damaged probe may need replacement.
c. Perform a temperature calibration (refer to Section 5.3) using a known accurate thermometer as a reference. - Appliance Not Turning On/Off as Expected:
a. Verify that the Start and Stop temperatures are set correctly for either heating or cooling mode (refer to Section 5.1).
b. Ensure the appliance is properly plugged into the thermostat's outlet and is functional.
c. Check if the thermostat is in a timer mode (F01-F04). If so, switch back to Temperature Control Mode if temperature-based control is desired, as these functions cannot be used simultaneously.
d. Confirm that the appliance's power requirements do not exceed the thermostat's 1800W/15A limit. - Display Not Visible / Backlight Issue:
a. Ensure the device is powered on.
b. If the backlight is off, it may be a power-saving feature or a fault. If the display is completely blank, refer to "Device Not Powering On". - Settings Not Saving:
a. After adjusting settings, ensure you press the SET button to confirm and save the changes.
If the issue persists after attempting these troubleshooting steps, please contact Diymore customer support for further assistance.





