Arduino 2-Channel 24V Relay Module ⚡

The 24V 2-Channel Relay Module is a reliable switching board designed for direct control via a 5V logic signal from an Arduino or other microcontroller. Ideal for hobby projects and professional systems alike, it’s well-suited to industrial automation, robotics, and home automation where safe, high-current load control is required.
This module can switch up to 10A at 30VDC or 220–250VAC. Each channel includes a status LED indicator for quick diagnostics, and the inputs use an active-LOW (logic 0) trigger. Perfect for integrating with Arduino, Raspberry Pi (with appropriate level shifting), ESP32, and other popular electronics components and modules.

Key Features 🔧

• 2-channel relay board with 24V coil supply
• 5V logic-level control from Arduino or compatible microcontrollers
• Active-LOW trigger (0V = ON) for each input (IN1, IN2)
• Per-channel LED indicators for output status
• High-current switching: up to 10A at 250VAC or 30VDC
• Compact footprint with four mounting holes for easy installation

Specifications 📐

• Operating Voltage (module/coil): 24V
• Number of Channels: 2
• Logic Input Voltage: 5V compatible (from Arduino or other microcontroller)
• Microcontroller Input Current: approx. 20mA per activated channel (typical)
• Relay Coil/Drive Current: 50–60mA per channel (drawn from the 24V supply)
• Indicator: LED for relay output status
• Contact Rating: AC 220–250V 10A, DC 30V 10A
• Dimensions (L × W × H): 5.0cm × 4.0cm × 1.7cm
• Mounting: Four fixing bolt holes for easy installation

Wiring and Pinout 🧩

• VCC: Connect to the positive terminal of the system power supply (24V)
• GND: Connect to the negative terminal of the system power supply; share ground with your microcontroller
• IN1, IN2: Relay control inputs (active LOW). Drive with 0V to energize the corresponding relay.

Load Switching Capacity 🔌

Each onboard high-current relay is rated at AC 250V 10A and DC 30V 10A, enabling safe control of lamps, motors, pumps, and other loads within these limits. Always apply proper electrical safety practices when switching mains voltage.

Typical Applications 🚀

• Arduino- or Raspberry Pi-based home automation
• Industrial automation and process control
• Robotics and mechatronics actuation
• General-purpose electronics modules and components control

Compatibility and Notes 🤖

Compatible with Arduino, Raspberry Pi (use level shifting for 3.3V GPIO), ESP32/ESP8266, STM32, and other microcontroller platforms. Ensure your GPIO can source/sink the required input current or use a driver transistor if necessary. Maintain a common ground between the controller and the module for reliable operation.