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1 Channel PC USB Intelligent Control Relay Module is a high-quality, driver-free automation component designed to provide seamless computer-based control over electrical appliances. This module utilizes a high-performance HID (Human Interface Device) controller, which means you can plug it into any Windows or Linux system without installing complex drivers. Consequently, users can immediately begin toggling power to external devices directly through software commands or custom scripts. Furthermore, the onboard relay supports significant AC and DC loads, making it a versatile bridge between low-voltage digital signals and high-voltage power circuits. Therefore, this intelligent module serves as an ideal solution for hobbyists and industrial engineers who require reliable, plug-and-play USB switching capabilities.
Key Features:
- Driver-Free Operation: The module uses the standard HID class, ensuring compatibility with most operating systems without the need for manual driver installation.
- Onboard HID Controller: A dedicated microcontroller manages the USB communication and relay logic, providing a stable and responsive control interface.
- High-Quality Relay: Features a robust mechanical relay capable of switching both AC and DC voltages for various industrial and home automation tasks.
- Status Indicator LED: An integrated LED provides real-time visual feedback, illuminating when the relay is energized and active.
- Simple Software Control: Developers can easily integrate the module into custom applications using simple C++, C#, or Python libraries that support HID devices.
Technical Specifications:
- Input Voltage: 5 VDC (Powered directly via USB port)
- Maximum Switching Voltage (AC): 250 VAC
- Maximum Switching Voltage (DC): 30 VDC
- Maximum Switching Current: 10 A
- Communication Protocol: USB HID (Human Interface Device)
- Relay Type: Single Pole Double Throw (SPDT)
- Operating Temperature: −10°C to +60°C
Mechanical Specifications:
- USB Connector: Type-B Square USB Interface
- Terminal Block: 3-Pin Screw Terminal for secure high-voltage wiring
- Mounting Holes: Features four M3 mounting holes for easy installation into enclosures or control panels.
- PCB Material: FR-4 Military Grade double-sided board for enhanced durability.
Dimensions:
- Length: ≈ 56.5 mm
- Width: ≈ 24.9 mm
- Height: ≈ 18.0 mm
- Weight: ≈ 20 g
Pinout and Wiring:
- USB Port: Plug this directly into the host computer using a standard USB A-to-B cable.
- COM (Common): The central terminal on the 3-pin block; connect your load’s live wire here.
- NO (Normally Open): Connect this to your device if you want the circuit to close only when the USB command is sent.
- NC (Normally Closed): Connect here if you want the circuit to remain closed by default and open only when triggered.
- Wiring Note: However, always ensure you disconnect the power source before making any connections to the screw terminals to prevent electrical shock.
Datasheet Reference:
- Download USB Intelligent Control Relay Module Manual
Commonly Used in:
- Home Automation: Controlling lamps, fans, or heaters directly from a desktop PC or media center.
- Server Management: Providing a hardware-level reboot switch for remote servers or networking equipment.
- Automated Testing: Enabling software-driven power cycling for electronic components during quality assurance cycles.
Applications:
- Software-Triggered Alarms: Activating sirens or beacons when specific system errors or events occur on the computer.
- Kiosk Systems: Managing the power state of peripherals in public digital kiosks.
- Industrial Sequencing: Integrating with PC-based SCADA systems to sequence low-priority industrial loads.
Equivalent Models:
- Sainsmart 1-CH USB Relay: A widely available alternative that uses a similar HID command structure.
- ICStation USB Control Relay: A functional equivalent featuring the same DIP-sized PCB layout and USB Type-B port.
- HID-USB-Relay (Open Source): Generic variants often found in the maker community that share the same software libraries.
Package Includes:
- 1 x 1 Channel PC USB Intelligent Control Relay Module
Additional information
| Weight | 20 g |
|---|---|
| Dimensions | 65 × 25 × 17 mm |











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