Two-Channel Opto-Isolated Relay Board

Add two relay channels to a custom control project with this opto-isolated relay board. It is offered in component packages so you can select the board, case or controller arrangement your build needs.

✅ Control two switching channels - The two-channel layout provides separate relay channels for a project that needs more than one switching output.

✅ Build around your chosen controller - The relay-board format lets you integrate switching into a compatible custom circuit instead of replacing the entire project.

✅ Select the components for your build - Board-only, case and ESP32-C3 package options let you match the purchase to the parts you already have.

Two Relay Channels for a Purpose-Built Control Project

When your project needs to switch two circuits, a relay module gives those switching tasks a defined place in the build. Connect the channels only within the supply, signal and contact ratings confirmed for the actual board.

Opto-isolation is part of the board design, but the completed system depends on its wiring, power arrangement and installation. Plan the control interface and enclosure alongside the loads you intend to switch rather than treating the module as a finished appliance.

Select the package carefully if your project also needs a case or an ESP32-C3 controller. A board-only option does not include those additions. Electrical integration requires suitable technical knowledge, and the module is not a ready-to-use enclosed mains switching product.

Technical details

• Two relay channels
• Opto-isolated board design
• Options: board only, relay with case, relay with ESP32-C3
• Confirm supply, interface and contact ratings for the actual board

Choose the component package that completes your two-channel control build.