Are you looking to automate a motorized damper (Motorised Damper 150Ø 240V) to isolate your laundry ventilation? Using a Shelly device and a humidity sensor is a smart solution to control ventilation based on real-time humidity levels. In this guide, we’ll walk you through the right components and setup to achieve this.
Step 1: Choose the Right Shelly Device for Control
To control your motorized damper, you’ll need a Shelly device capable of handling the damper’s requirements:
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Shelly Plus 1 or Shelly 1 GEN3:
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These devices are ideal for controlling motorized dampers requiring an SPDT (Single Pole Double Throw) switch.
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The relay (potential-free outputs or dry contact) can switch up to 16A, making it suitable for higher-power motors.
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These devices are Wi-Fi-enabled and easily manageable via the Shelly Cloud app.
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Since the damper requires an SPDT switch, Shelly devices can be used to control the opening and closing of the damper by switching the 24V or AC voltage input to the motor. Be sure to confirm the motor’s voltage requirements before wiring.
Step 2: Select a Humidity Sensor
To automate ventilation based on humidity levels, a compatible sensor is necessary:
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Shelly H&T GEN3 or Shelly BLU H&T:
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These sensors measure temperature and humidity.
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They integrate seamlessly with Shelly devices via the Shelly Cloud app.
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Set rules to activate the Shelly device when the sensor detects a specific humidity level.
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For example, you can program the damper to open when the humidity exceeds 70% and close when it falls below 50%, ensuring optimal ventilation in your laundry area.
Step 3: Address the SPDT Switch Requirement
Motorized dampers typically require an SPDT switch to toggle between open and closed states. Shelly devices provide normally open (NO) and normally closed (NC) terminals, but SPDT functionality may require creative wiring or additional components. While Shelly devices might not directly provide SPDT operation, they can still control the damper by toggling states as needed. Consult an electrician or the damper’s manufacturer if necessary.
Step 4: Wiring Setup
Here’s how to wire your system:
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Connect the Shelly device to the motorized damper’s control circuit.
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Use the NO or NC terminals, depending on how the damper operates.
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Ensure the voltage supplied to the damper matches its specifications (e.g., 24V or AC).
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Position the humidity sensor in the laundry area to monitor conditions effectively.
Step 5: Automation and Control
Use the Shelly app to set up automation:
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Create rules to trigger the Shelly relay when specific humidity thresholds are reached.
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Example: When humidity exceeds 70%, the relay activates, opening the damper. When humidity drops below 50%, the relay deactivates, closing the damper.
This setup ensures your laundry ventilation operates automatically, reducing energy waste and maintaining air quality.
Recommended Components
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Shelly Plus 1 or Shelly 1 GEN3 (for controlling the damper)
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Shelly H&T GEN3 or Shelly BLU H&T (for humidity monitoring)
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SPDT Switch (if required, integrated into the system): Note: Compatibility may vary depending on your specific damper and wiring setup.
Conclusion
By combining a motorized damper, Shelly devices, and a humidity sensor, you can automate your laundry ventilation seamlessly. This solution is efficient, cost-effective, and easy to set up with the right components. If you’re unsure about the wiring or compatibility, consult with an electrician to ensure everything is properly installed.