Shelly RGBW2 Power Specifications Clarification

General
1

Hello everyone, I’m currently exploring the possibility of integrating Shelly RGBW2 controllers into my LED lighting project. I’ve been using SonOff Basic Switches for a while now, but I’m intrigued by the Shelly devices after hearing great things from a friend. However, I’ve stumbled upon some confusing information regarding the power specifications of the Shelly RGBW2, and I’d love to get some clarity from the community.

From what I gather, there are two sets of power specifications mentioned for the Shelly RGBW2:

  • User Guide Specifications:

    • 144W combined power at 12V
    • 75W per channel at 12V
    • 288W combined power at 24V
    • 150W per channel at 24V

  • Product Page Specifications:

    • 144W combined power at 12V
    • 45W per channel at 12V
    • 288W combined power at 24V
    • 90W per channel at 24V

This discrepancy has left me a bit uncertain about whether the Shelly RGBW2 will meet the demands of my LED project. Let me explain my setup in more detail:

I’m planning to use RGBW (Warm White) LED strips at 24V with 80 LEDs per meter and a maximum power consumption of 20.1W/m. I’ve installed 4x 4m strips, each connected to its own controller to minimize voltage drop. This means each 4m strip consumes 80.4W, and all four strips together would draw 321.6W at full brightness.

Based on the specifications, it seems that the combined power output of 288W at 24V might not be sufficient for my setup. However, I’m reassured to know that this maximum power draw would only occur if both the RGB and W channels are set to 100% brightness simultaneously, which I plan to avoid. If I use either the RGB or W channels separately, the controller should handle the load without issues.

My questions are:

  1. What happens if I exceed the combined power limit? Will the controller simply throttle the output, or is there a risk of damage?
  2. Is there any documentation or user experience that confirms how the controller behaves under such conditions?

I’d greatly appreciate any insights or advice from those who have experience with the Shelly RGBW2 or similar setups. Your expertise would be invaluable in helping me finalize my project design. Thank you in advance for your time and assistance!