8-Channel Relay Module – 5V DC 10A (Double-Sided PCB Design)

Take total command over your complex home automation grids and industrial machinery panels with the 8-Channel 5V 10A Relay Module. Precision-engineered by Muonix, this heavyweight expansion board serves as an 8-way isolated power switchboard, allowing low-voltage microcontrollers to safely toggle up to eight high-current appliances simultaneously.

This variant features an advanced Double-Sided (Both Side) PCB design. By routing signal control logic on one side and heavy power distribution traces on the other, this layout dramatically improves heat dissipation, drastically reduces electromagnetic interference (EMI), and provides double the physical structural strength. It is the absolute gold standard for multi-device scheduling arrays and heavy-duty embedded installations.

Key Features

• Double-Sided (Both Side) PCB Engineering: Manufactured using a premium double-layer FR4 board. High-current load tracks run on heavy copper paths on the bottom side, while delicate logic control lines stay securely on the top side, completely mitigating cross-talk and overheating issues.

• Octal-Channel Processing Power: Control up to 8 separate AC or DC electrical appliances completely independently using minimal digital I/O pins on your microcontroller.

• Full Optocoupler Matrix Isolation: Equipped with an array of eight high-speed optocouplers. By creating a physical light barrier between the logic triggers and the power relays, your Arduino, ESP32, or Raspberry Pi is 100% safe from back-EMF spikes and inductive surges.

• Flexible Trigger Logic: Features adjustable onboard jumper caps allowing you to instantly configure the board for High-Level Trigger or Low-Level Trigger logic to perfectly adapt to your software platform.

• Independent LED Status Arrays: Built with 8 individual, bright SMD LEDs that illuminate to give you clear, real-time diagnostic visual tracking of which relay channels are actively closed.

Technical Specifications

Hardware Wiring & Pin Layout

The module features a highly organized layout to keep low-voltage logic inputs clearly separated from high-voltage wiring:

1. Logic Control Input (Header Pins):

• VCC: Connects to the +5V DC supply rail from your microcontroller.

• GND: System ground reference pin.

• IN1 to IN8: Digital input trigger pins. Pulling these lines HIGH or LOW (depending on your jumper configuration) activates the respective relay channel.

• VCC / JD-VCC Jumper: Allows you to supply separate power to the relay coils (JD-VCC) to keep the microcontroller's power grid completely isolated from the relay coils' power draw.

2. High-Voltage Load Output (3-Way Screw Terminals):

Each of the 8 channels features a dedicated terminal block containing:

• NO (Normally Open): The circuit stays disconnected/open until the input trigger pin commands the relay to close.

• NC (Normally Closed): The circuit stays connected/closed by default until the relay is triggered to open.

• COM (Common Terminal): The central power wire from your load hooks up directly here.

Common Applications

• Whole-Home Smart Automation: Create a master switchboard central panel to coordinate lighting, fans, entertainment systems, and heavy kitchen appliances from a single home assistant node.

• Industrial Multi-Load Control Panel: Serves as a reliable PLC intermediate layout board to safely trigger heavy pneumatic valves, conveyor elements, and factory warning sirens.

• Automated Greenhouses & Hydroponics: Manage complex 24-hour cycles for grow lights, ventilation fans, misting solenoids, and water pumps independently.

Package Includes:

• 1 x 8-Channel Relay Module 5V 10A (Double-Sided Design with Logic Jumpers)