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

Streamline your home automation setups and DIY microcontroller grids with the 8-Channel 5V 10A Relay Module. Precision-engineered by Muonix, this 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 a classic Single-Sided (One Side) component layout. By consolidating all the terminal blocks, relays, and logic headers onto one clean plane, this architecture provides a low-profile footprint, straightforward visual troubleshooting, and a highly cost-effective multi-channel solution. It is the perfect match for space-efficient junction boxes, academic labs, and multi-device scheduling arrays.

Key Features

• Efficient Single-Sided Layout: All terminal outputs, relays, optocouplers, and header pins are arranged on a single face of the PCB. This keeps the board flat, uniform, and incredibly easy to mount against standard panels or enclosures.

• Octal-Channel Control Power: Command up to 8 separate AC or DC electrical appliances completely independently using minimal digital I/O pins from 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 rails, 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 match your software code.

• 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 engaged.

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 centralized switch panel to coordinate standard lighting, fans, entertainment systems, and household appliances from a single smart hub node.

• Industrial Control Interfacing: Serves as a reliable, economical intermediate layout board to safely link low-power logic sensors with factory sirens, lights, and automated small machines.

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

Package Includes:

• 1 x 8-Channel Relay Module 5V 10A (One Side Design)