Walfront WT-2000
Walfront WT-2000 Digital Humidity Controller User Manual
Model: WT-2000
1. Introduction
This manual provides instructions for the proper installation, operation, and maintenance of the Walfront WT-2000 Digital Humidity Controller. Please read this manual thoroughly before using the device to ensure safe and efficient operation.
The WT-2000 is designed for precise humidity control in various environments such as storage warehouses, greenhouses, and residential settings. It features a clear digital display and user-friendly controls for setting desired humidity levels.
2. Safety Information
WARNING: Failure to follow these safety instructions may result in fire, electric shock, or other injury or damage.
- Ensure the power supply voltage matches the device's specifications (110-220V).
- Do not operate the device in wet or damp conditions.
- Do not disassemble or modify the device. Refer all servicing to qualified personnel.
- Keep the device out of reach of children.
- Always unplug the device from the power outlet before cleaning or performing any maintenance.
3. Product Overview
The Walfront WT-2000 is a plug-and-play digital humidity controller. It features a digital display for current humidity, control buttons for settings, and an integrated power outlet for connecting humidifiers or dehumidifiers.

Figure 3.1: Front view of the Walfront WT-2000 Digital Humidity Controller, showing the digital display, up/down buttons, and integrated power outlet.

Figure 3.2: The WT-2000 controller with its attached power cord and external humidity sensor.
Package Contents:
- 1 x Walfront WT-2000 Digital Humidity Controller (EU Plug)
- 1 x Integrated Humidity Sensor
- 1 x User Manual (this document)
4. Specifications
| Parameter | Value |
|---|---|
| Model | WT-2000 |
| Type | Digital Humidity Controller |
| Material | ABS |
| Operating Voltage | 110-220V |
| Control Range | 0% to 99% RH |
| Output Type | Direct Output |
| Control Accuracy | 0.1% RH |
| Measurement Accuracy | ±0.2% RH |
| Input Type | SFG309T |
| Maximum Capacity | 10A |
| Dimensions (L x W x H) | 1 x 1 x 1 cm (as per manufacturer data) |
| Item Weight | 179 Grams |
5. Setup
- Unpack the Device: Carefully remove the WT-2000 humidity controller and its components from the packaging.
- Inspect for Damage: Check the device for any visible damage. If damaged, do not use and contact customer support.
- Placement: Position the humidity controller in a location where the external humidity sensor can accurately measure the ambient humidity of the desired area (e.g., warehouse, greenhouse, room). Ensure the sensor is not directly exposed to moisture or extreme temperatures.
- Power Connection: Plug the WT-2000 controller into a suitable 110-220V power outlet. The digital display will illuminate, showing the current humidity reading.
- Connect Appliance: Plug your humidifier or dehumidifier into the integrated power outlet on the WT-2000 controller.

Figure 5.1: Front and back views of the WT-2000, illustrating the display, buttons, power outlet, and rear specifications label.
6. Operating Instructions
6.1 Setting Start Humidity
- Press the "Up" button once to display the current start humidity setting.
- Press and hold the "Up" button for 3 seconds. The start humidity value on the display will begin to flash.
- Use the "Up" and "Down" buttons to adjust the desired start humidity value.
- The setting will automatically save after a few seconds of inactivity, or you can press any other button to confirm.
Example: If you set the start humidity to 60% RH, the connected appliance (e.g., dehumidifier) will activate when the humidity rises above 60% RH. If it's a humidifier, it will activate when humidity drops below 60% RH.
6.2 Setting Stop Humidity
- Press the "Down" button once to display the current stop humidity setting.
- Press and hold the "Down" button for 3 seconds. The stop humidity value on the display will begin to flash.
- Use the "Up" and "Down" buttons to adjust the desired stop humidity value.
- The setting will automatically save after a few seconds of inactivity, or you can press any other button to confirm.
Example: If you set the stop humidity to 50% RH, the connected appliance (e.g., dehumidifier) will deactivate when the humidity drops to 50% RH. If it's a humidifier, it will deactivate when humidity rises to 50% RH.

Figure 6.1: Close-up view of the WT-2000's digital display showing humidity reading and the "Up" and "Down" control buttons.
6.3 Factory Reset
To restore the device to its factory default settings:
- Ensure the device is powered on.
- Simultaneously press and hold both the "Up" and "Down" buttons.
- The digital display will show "888" and then automatically return to displaying the current humidity, indicating that the factory settings have been restored.
7. Maintenance
- Cleaning: Disconnect the device from the power supply before cleaning. Wipe the exterior with a soft, dry cloth. Do not use abrasive cleaners or allow water to enter the device.
- Sensor Care: Keep the humidity sensor clean and free from dust or debris to ensure accurate readings. Do not immerse the sensor in liquid.
- Storage: When not in use for extended periods, store the controller in a cool, dry place, away from direct sunlight and extreme temperatures.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | No power supply; loose connection. | Check if the device is properly plugged into a live power outlet. Verify the outlet is functioning. |
| Inaccurate humidity readings. | Sensor is dirty or damaged; improper sensor placement. | Clean the sensor. Ensure the sensor is placed in an area representative of the humidity to be controlled. If problem persists, sensor may be damaged. |
| Connected appliance not turning on/off. | Incorrect start/stop humidity settings; appliance not working; controller malfunction. | Verify start and stop humidity settings. Test the connected appliance directly in a wall outlet. Perform a factory reset on the controller. |
| Display shows "888" or other error. | Temporary system error; factory reset initiated. | If "888" appears briefly, it indicates a factory reset. If an error code persists, try unplugging and replugging the device. If the issue continues, contact customer support. |
9. Warranty and Support
Walfront products are designed for reliability and performance. For warranty information or technical support, please refer to the documentation provided with your purchase or contact your retailer.
Please have your model number (WT-2000) and purchase date available when contacting support.
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