Theremino Opto TRIAC

SKU: RT-003
  • High Power Handling: Switches AC loads up to 3 kW, suitable for demanding applications like furnaces, boilers, and motors.
  • Precise Zero-Crossing Switching: Reduces electromagnetic interference (EMI) and voltage spikes, ensuring clean and efficient operation.
  • Modular Design: Easily integrates with the Theremino modular I/O system for seamless setup integration.
  • Windows Compatibility: Works natively on Windows 10/11 for a user-friendly control platform.
  • Arduino Compatibility: Compatible with Arduino for direct integration into Arduino-based projects.

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🕒 Order Processing Time

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⏱️ Estimated Delivery Time (After Processing)

RegionEstimated Delivery (Business Days)
Asia2–5
Western EU7–10
Eastern EU7–10
North America5–8
South America7–15
Australia5–8
Africa5–15

 

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Hello, fellow geeks!

I’m an embedded systems engineer with a degree in IoT Engineering, and I’ve been deeply involved in AIoT product development for years. I’ve participated in several B2B projects from the ground up — covering open-source hardwaresystem architecturehardware selection, and solution implementation.

Through this journey, I’ve come across all kinds of AIoT products.
Some are smart, efficient, and elegantly designed; others are overcomplicated, packed with features that don’t solve real problems.
Over time, I’ve started focusing on one simple but important question:

Does this product truly solve the user’s core need?
Not just whether it’s ‘cool’ or uses the latest tech.

I firmly believe that great products don’t have to be complex or expensive — they just need to solve problems clearly and effectively, at a reasonable cost.

That’s why I created this site:
A space where engineers can connect, share, and learn from each other.

Here, I share great products and smart solutions I’ve encountered during projects — and try to explain why they’re good.
This isn’t about marketing. It’s about real experiencehonest judgment, and technical clarity.

This platform is called sharingwin, because I believe in shared success.

You’ll find high-value, practical tools and products here — to help you save time on selectionavoid unnecessary trial and error, and focus on what works.

As for me, I hope to use this space to connect with like-minded engineersexchange ideas, and — to be honest — maybe earn a little on the side too. That’s part of the fun. 😄

 

To all the makers and creators who’ve supported me along the way — thank you.
Due to some heavy personal projects recently, I haven’t been able to update or engage as frequently as I’d like — and for that, I apologize.
Moving forward, I’ll continue to optimize product content and be more active in sharing useful insights.

Your trust and support mean everything.
You’re the reason I believe this platform matters.

 

If you have any great products or ideas you think deserve more visibility, feel free to reach out.
I’m happy to help with sourcingconnect to the right supply chain, or feature it here so more engineers can see its value.

A single person has limited power —
but co-creation multiplies value.

If you believe in that too, let’s build something useful and meaningful — together.

Theremino Opto TRIAC: A Powerful Solid-State Relay for AC Loads

The Theremino Opto TRIAC is a robust solid-state relay designed to handle high-power AC loads with ease. It’s particularly well-suited for controlling devices like furnaces, boilers, and motors, making it a versatile tool for various applications.

Key Features:

  • High Power Handling: Capable of switching AC loads up to 3 kW, making it suitable for demanding applications.

  • Precise Zero-Crossing Switching: Employs zero-crossing switching technology, ensuring clean and efficient switching operations. This minimizes electromagnetic interference (EMI) and prevents the generation of harmful voltage spikes.

  • Modular Design: Seamlessly integrates with the Theremino modular input/output system, enabling easy integration into existing setups.

  • Windows Compatibility: Operates natively under Windows 10/11, providing a user-friendly platform for control and automation.

Applications:

  • HVAC Control: Precisely regulate heating and cooling systems, ensuring comfortable indoor environments.

  • Motor Control: Control the speed and operation of motors, enabling efficient automation of various machinery.

  • Lighting Control: Dim or switch on/off lighting fixtures with precision, creating dynamic lighting effects or energy-saving measures.

Theremino Master PWM Limitations:

While the Theremino Master offers PWM (Pulse Width Modulation) capabilities, it’s not directly suitable for dimming applications with 50 Hz loads due to its minimum PWM pulse repetition rate of 250 Hz.

Slow Software PWM for Precision Control:

For slow-responding devices like large ovens, an alternative approach is to employ software-generated PWM with a very slow repetition rate (1-10 seconds). This enables precise temperature control with an accuracy of 1% (1-second repetition) or 0.1% (10-second repetition).

Arduino Compatibility:

The Theremino Opto TRIAC is also compatible with Arduino systems, allowing for direct integration and control within Arduino-based projects.

Overall, the Theremino Opto TRIAC stands as a powerful and versatile solid-state relay, offering precise control over high-power AC loads with minimal interference and compatibility with various platforms.

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