The STC-3028 Controller – A professional-grade thermostat and humidistat in one compact device, offering full independent control
Looking to maintain precise temperature and humidity levels without the hassle of managing two separate devices? The STC-3028 digital controller is your all-in-one solution. It simultaneously monitors and regulates both parameters, with each channel featuring its own dedicated relay, custom thresholds, and switching logic. Install one unit and solve two climate control challenges at once.
Note: The two relay outputs operate completely independently—one manages temperature, while the other manages humidity, each with its own fully customisable minimum and maximum setpoints.
Why choose the STC-3028? (Key Benefits):
- Independent Dual Control — Separate channels for temperature and humidity that do not interfere with one another; set unique thresholds for each.
- Dual-Colour LED Display — Temperature is shown in red, humidity in blue, allowing you to monitor your environment at a glance.
- Robust 10A Relays — Directly connect heaters, fans, or humidifiers of medium power without the need for additional relay modules.
- Combined Sensor Included — Everything you need is in the box; simply plug in the sensor and start monitoring immediately.
- Programmable Hysteresis — Prevent rapid relay cycling by setting hysteresis for each channel, significantly extending the lifespan of your connected equipment.
- Offset Calibration — Easily calibrate both temperature and humidity readings against a reference device for maximum accuracy.
- Direct 220V AC Power — Connects directly to standard mains power, requiring no external transformers or power supplies.
Performance and Precision
At the heart of the STC-3028 is a dedicated microprocessor that processes real-time sensor data to trigger the relays based on your specific requirements. The adjustable hysteresis ensures that your equipment isn’t constantly switching on and off due to minor fluctuations, providing essential protection for your hardware. Whether you are managing an egg incubator, an automated greenhouse, a fermentation chamber, an aquarium, or a wine cellar, the STC-3028 keeps your microclimate perfectly balanced.
| Feature | Specification |
|---|---|
| Model | STC-3028 |
| Supply Voltage | 220V AC (50/60Hz) |
| Relay Outputs | 2 x 10A (Independent) |
| Display | Dual LED – Red (Temperature) + Blue (Humidity) |
| Sensor Included | Yes – Combined Temperature & Humidity Sensor |
| Control Type | Thermostat + Humidistat (2-in-1) |
| Threshold Programming | Independent Min/Max for each channel |
| Hysteresis | Independently programmable per channel |
| Offset Calibration | Yes – Manual calibration for both parameters |
| Recommended Applications | Incubators, greenhouses, aquariums, cellars, storage, fermentation |
Programming and Setup Guide
Setting Temperature (Channel 1):
- Long-press the up button (Channel 1) until the display flashes.
- Adjust the minimum temperature using the up/down buttons.
- Wait for the value to save automatically.
- Long-press the down button (Channel 1) until the display flashes.
- Adjust the maximum temperature using the up/down buttons.
- Wait for the value to save automatically.
Setting Humidity (Channel 2):
- Long-press the up button (Channel 2) until the display flashes.
- Adjust the minimum humidity using the up/down buttons.
- Wait for the value to save automatically.
- Long-press the down button (Channel 2) until the display flashes.
- Adjust the maximum humidity using the up/down buttons.
- Wait for the value to save automatically.
Offset Calibration: Press and hold both the up and down buttons simultaneously to access the calibration menu. Adjust the displayed values against a reference thermometer or hygrometer for enhanced precision.
What’s in the Box
- 1x STC-3028 Digital Controller
- 1x Combined Temperature and Humidity Sensor
Frequently Asked Questions
Can the STC-3028 control temperature and humidity at the same time?
Yes. The two channels operate completely independently, each with its own 10A relay and customisable thresholds. There is no interference between the two functions.
What equipment can I connect to the relays?
You can connect heating elements, fans, humidifiers, dehumidifiers, or any electrical load compatible with 220V and a maximum current of 10A.
Is the sensor included, or do I need to buy it separately?
The sensor is included. The combined temperature and humidity probe comes with the controller, so you can set it up and start monitoring immediately.
Is this suitable for egg incubators or greenhouses?
Absolutely. It is a popular choice for these applications due to its dual-control functionality and simple programming. It is also ideal for fermentation chambers, cellars, and storage areas requiring strict climate control.
How do I calibrate the readings if they differ from my reference device?
Simply press and hold the up and down buttons simultaneously to enter the offset menu. You can then adjust the temperature and humidity readings individually to match your reference tool.
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