4 Channel Pc USB Intelligent Control Relay Module

4 Channel Pc USB Intelligent Control Relay Module is a high-performance automation component that allows users to control high-voltage electrical devices directly through a computer’s USB interface. This module utilizes a reliable onboard HID controller chip, which eliminates the need for complex driver installations on most modern operating systems. Consequently, you can achieve seamless “plug-and-play” operation for controlling lamps, motors, and other AC or DC loads. The board features four independent channels, providing versatile switching capabilities for multi-stage automation projects. Furthermore, the integrated optoisolation protects your computer’s sensitive USB circuitry from potential back-EMF or electrical noise originating from the connected loads. Therefore, this module serves as an ideal bridge between software-based control logic and real-world hardware execution.

Key Features:

• Driverless HID Technology: The onboard square USB interface provides a stable connection without requiring specialized drivers for Windows or Linux systems.
• Four Independent Channels: Each of the four relays operates independently, allowing for the simultaneous or sequential control of multiple devices.
• High-Quality Relays: The module uses durable Songle-style relays capable of switching up to 10 A at 250 V AC or 30 V DC.
• Real-Time LED Indicators: Each channel includes a dedicated status LED, giving the user immediate visual confirmation of the relay’s current state.
• Optocoupler Protection: Integrated optoisolators ensure that high-voltage spikes on the relay side do not damage the host PC or USB controller.

Technical Specifications:

• Operating Voltage: 5 V DC (Typically powered via USB or external 5V input)
• Relay Contact Rating: 10 A @ 250 V AC or 10 A @ 30 V DC
• Communication Protocol: USB HID (Human Interface Device)
• Current Consumption: ≈ 300 mA when all four relays are active
• Onboard Chip: High-performance HID controller for stable USB communication
• Contact Type: SPDT (Single Pole Double Throw) per channel

Mechanical Specifications:

• PCB Material: Double-sided FR4 glass fiber board with high-quality green solder mask
• Terminal Blocks: Heavy-duty screw terminals for secure wire connections
• USB Connector: Standard USB Type-B (Square) female socket
• Mounting: Four pre-drilled 3 mm mounting holes for easy installation into enclosures

Dimensions:

• Length: ≈ 72 mm
• Width: ≈ 65 mm
• Height: ≈ 19 mm
• Mounting Hole Pitch: ≈ 67 mm x 60 mm

Pinout and Wiring:

• USB Port: Connects directly to the PC using a standard USB Type-A to Type-B cable.
• NO (Normally Open): The relay contact remains open when the channel is inactive; it closes when the USB command triggers the relay.
• COM (Common): The central terminal that connects to the NO or NC pin depending on the relay state.
• NC (Normally Closed): The relay contact remains closed when the channel is inactive; it opens upon triggering.
• Power Inputs: Some versions include auxiliary 5 V and GND pins for external power support if the USB port cannot provide sufficient current.

Datasheet Reference:

• Download USB Intelligent Control Relay Module Manual

Commonly Used in:

• Smart Home Automation: Controlling home appliances through custom desktop software or scripts.
• Industrial Control: Managing sequence-based power switching for factory floor testing equipment.
• Server Management: Providing a remote physical “hard reset” or power toggle for server racks.

Applications:

• Computer-Controlled Lighting: Synchronizing room lights with software events or specialized gaming setups.
• Automated Testing: Power-cycling devices under test (DUT) during long-term reliability trials.
• USB Power Distribution: Creating an intelligent power strip that responds to system commands.

Equivalent Models:

• ICSE014A: A popular 4-channel USB relay module often using the same HID communication protocol.
• Sainsmart USB 4-Channel Relay: A high-durability alternative providing similar SPDT switching capabilities.
• Numato Lab 4 Channel USB Relay: However, this model often uses a Virtual COM port rather than the standard HID protocol.

Package Includes:

• 1 x 4 Channel Pc USB Intelligent Control Relay Module