MMUNNA STC-3029/STC-3030/STC-3031 Digital Humidity Controller User Manual

1. Introduction

This manual provides instructions for the installation, operation, and maintenance of the MMUNNA STC-3029, STC-3030, and STC-3031 series Digital Humidity Controllers. These devices are designed for precise humidity control in various applications, including water-saving irrigation, greenhouses, plant culture, and more.

The STC-3029 is a single-channel controller with one soil sensor. The STC-3030 is a dual-channel controller with two soil sensors, offering independent control. The STC-3031 is a single-channel controller with two soil sensors.

2. Specifications

Image: Detailed product information and dimensions for the STC-3031 model, including its physical size and sensor connections.

3. Product Features

• Reliable Performance: High working efficiency and accurate sensing capabilities.
• Wide Application Range: Suitable for water-saving irrigation, greenhouses, flowers and vegetables cultivation, and general plant culture.
• Fast Response: Quick detection and response to humidity changes.
• Precise Control: Automatic start and stop functions for accurate moisture management.
• Advanced Sensor Technology: Utilizes a chip for low power consumption, high sensitivity, and stable signal transmission.
• Large Screen Display: High-definition screen for clear and accurate real-time readings.
• Easy Connection: Simplified back-line connections for straightforward operation.
• Waterproof Soil Sensor: Durable and reliable sensors for various soil types.
• Multi-directional Detection: Two detection probes (STC-3030/3031) for maintaining numerical accuracy.

Image: Visual representation of the wide range of applications for the humidity controller, including water-saving irrigation, greenhouses, flowers and vegetables, plant culture, and scientific training.

Image: Close-up view highlighting key features such as the large HD screen for accurate testing, the simple back-line connections for ease of use, and the two detection probes for multi-directional accuracy.

Image: A detailed view of the waterproof soil sensor, showing its two probes and connecting cable, designed for reliable soil moisture detection.

4. Product Layout and Controls

Image: Diagram illustrating the front and back panels of the STC-3031 model. The front panel shows the dual real-time displays, 'Out' and 'Set' indicators, 'Set' key, 'Up' key, 'Shutdown' key, and 'Down' key. The back panel indicates 'Exportation' and 'Sensor' connection ports.

Front Panel Controls:

• Real-time Display: Shows current humidity readings.
• Output Light (Out): Indicates when the output relay is active.
• Set Light (Set): Indicates when the device is in setting mode.
• Set Key (S): Used to enter and confirm parameter settings.
• Up Key (▲): Used to increase values or navigate menu options.
• Down Key (▼): Used to decrease values or navigate menu options.
• Shutdown Key (Power Symbol): Used to power on/off or exit setting mode.

Back Panel Connections:

• Exportation Ports: Terminals for connecting external devices (e.g., humidifiers, dehumidifiers, pumps).
• Sensor Ports: Terminals for connecting the soil humidity sensor cables.

5. Setup and Installation

1. Mounting: Install the controller into a panel cutout of 71x29mm. Ensure adequate ventilation around the unit.
2. Wiring Power: Connect the AC110-220V power supply to the designated power input terminals on the back of the controller. For STC-3031, ensure the correct DC12V/DC24V/AC110-220V input is used based on your model.
3. Connecting Sensors: Connect the soil humidity sensor cable(s) to the 'Sensor' ports on the back panel. Ensure a secure connection.
   • STC-3029: Connect one sensor.
   • STC-3030/STC-3031: Connect two sensors.
4. Connecting Output Devices: Connect your external humidity control devices (e.g., humidifier, dehumidifier, water pump) to the 'Exportation' ports. Ensure the total power consumption does not exceed the controller's maximum output power (1500W for most models, refer to specifications for STC-3031).
5. Sensor Placement: Insert the soil sensor probes into the soil at the desired depth and location for accurate moisture detection. Ensure the probes are fully in contact with the soil.
6. Initial Power On: After all connections are secure, apply power to the controller. The display should light up, showing the current humidity reading.

Important Safety Note: All wiring should be performed by a qualified professional to prevent electrical hazards. Disconnect power before making any connections or disconnections.

6. Operating Instructions

6.1. Power On/Off

Press the Shutdown Key (power symbol) to turn the device on or off.

6.2. Viewing Current Humidity

Upon powering on, the large screen display will show the real-time humidity detected by the sensor(s).

6.3. Setting Humidity Parameters

1. Enter Setting Mode: Press and hold the Set Key (S) for approximately 3 seconds until the 'Set' light illuminates and the display starts flashing.
2. Adjust Set Point: Use the Up Key (▲) and Down Key (▼) to adjust the desired humidity set point. This is the target humidity level you want to maintain.
3. Confirm Setting: Press the Set Key (S) again to confirm the value and move to the next parameter (if applicable) or exit setting mode.
4. Exit Setting Mode: If no further parameters need adjustment, press the Shutdown Key or wait for approximately 10 seconds for the device to automatically exit setting mode.

Note: For STC-3030 (dual-channel), you may have separate set points for each output channel. Refer to the specific model's detailed instructions for dual-channel configuration.

6.4. Calibration (Advanced)

If calibration is required, consult the full product manual or manufacturer's support. Typically, calibration involves adjusting an offset value to match a known reference humidity.

7. Maintenance

• Cleaning: Regularly wipe the controller's display and casing with a soft, dry cloth. Do not use abrasive cleaners or solvents.
• Sensor Care: Periodically inspect the soil sensors for dirt, debris, or corrosion. Gently clean the probes with water and a soft brush if necessary. Ensure they are dry before re-inserting into soil.
• Connection Check: Annually check all electrical connections for tightness and signs of wear or corrosion.
• Environmental Conditions: Ensure the controller is operated within its specified environmental limits (temperature, humidity) to prolong its lifespan.

8. Troubleshooting

9. Warranty and Support

For warranty information or technical support, please contact your retailer or the manufacturer directly. Keep your purchase receipt for warranty claims.