8-Channel 12V Relay Module with Optocoupler Isolation – High/Low Level Trigger Control for Arduino, Raspberry Pi, PLC – Industrial Automation, Smart Home DIY (Supports AC/DC Loads)

High-Quality Relays: Industrial-grade normally open (NO) relays with a maximum load capacity of AC 250V/10A or DC 30V/10A, ensuring durability and reliability for diverse applications. Optocoupler Isolation: Equipped with SMD optocoupler isolation for enhanced driving capability, noise immunity, and stable performance. Trigger current requirement: 5mA. 12V Power Supply: Operates on a 12V DC input (DC+ and DC- terminals included for easy power connection). Flexible Trigger Modes: Each relay channel (IN1-IN8) can be configured as high-level or low-level trigger via jumper settings (S1-S8), offering compatibility with various control systems. Fault-Tolerant Design: Prevents accidental relay activation even if control wires are disconnected, ensuring system safety. Dual LED Indicators: Green power indicator (steady operation confirmation) and 8 red status LEDs (one per relay) for real-time monitoring. User-Friendly Wiring: All interfaces (NO, COM, NC) feature terminal blocks for direct, tool-free connections. Ideal for DIY, automation, and industrial projects. Compact & Sturdy Build: Robust PCB design with dimensions 141.5mm x 50mm x 18.5mm (LxWxH). Includes four 3.1mm mounting holes (spacing: 136mm x 44.5mm) for secure installation. Relay Interface Details (24-Terminal Block): NO1-NO8: Normally open contacts (closed when relay is activated). COM1-COM8: Common terminals for relay circuits. NC1-NC8: Normally closed contacts (open when relay is activated). Trigger Configuration (Jumper Settings): Low-Level Trigger: Short jumper to "COM" side for relay activation on LOW signal input. High-Level Trigger: Short jumper to "VCC" side for relay activation on HIGH signal input. Applications: Home automation (lighting, appliances). Industrial control systems. IoT projects, robotics, and microcontroller setups (Arduino, Raspberry Pi, PLCs). Security systems, HVAC controls, and more. Package Includes: 1x 8-Channel 12V Relay Module Terminal blocks (pre-installed) Note: Ensure proper voltage/current ratings for connected loads. Not recommended for inductive loads (e.g., motors) without additional protection.

• 12V System Compatibility – Designed for 12V DC power applications, perfect for automotive electronics, solar systems, trucks, and industrial equipment.
• Enhanced Safety with Optocoupler – Optically isolated relays protect microcontrollers (Arduino, Raspberry Pi, ESP32) from voltage surges and EMI, ensuring stable operation.
• Dual Trigger Flexibility – Jumper-selectable high/low level triggering (3.3V–12V compatible) to match diverse control logic requirements.
• High Power Handling – Each relay supports up to 10A 250V AC or 10A 30V DC loads, ideal for motors, lights, pumps, or HVAC systems.
• Easy Installation & Monitoring – Screw terminals for secure wiring, LED status indicators per channel, and DIN rail mounting support for industrial setups.