8 Channel Pc USB Intelligent Control Relay Module

8 Channel Pc USB Intelligent Control Relay Module provides a sophisticated interface for managing up to eight independent high-power AC or DC circuits directly from your computer. This versatile module utilizes a HID (Human Interface Device) protocol driver, which eliminates the need for complex driver installations on Windows or Linux systems. Consequently, you can achieve plug-and-play functionality for automated home systems or industrial control tasks. The onboard square USB interface ensures a stable connection, while the high-quality relays handle significant current loads safely. Furthermore, this intelligent module includes onboard power and relay status LEDs to provide immediate visual feedback during operation. Therefore, developers and hobbyists alike can implement robust automation sequences with minimal effort and maximum reliability.

Key Features:

• Driverless Operation: The module uses the standard USB HID protocol, meaning your operating system recognizes it automatically without external driver software.
• Eight Independent Channels: Control eight separate electrical loads simultaneously, offering extensive flexibility for complex project requirements.
• High Load Capacity: Each relay can switch high-voltage loads up to 250 V_AC at 10 A or 30 V_DC at 10 A.
• Visual Indicators: Onboard LEDs signal the power status and the activation state of each individual relay for easy troubleshooting.
• Robust Protection: Each channel features optocoupler isolation to protect the sensitive USB circuitry from high-voltage spikes and electrical noise.

Technical Specifications:

• Input Voltage: 12 V_DC (External power required for relay coils)
• Communication Interface: USB Type-B (Square Interface)
• Relay Contact Rating: 10 A @ 250 V_AC / 10 A @ 30 V_DC
• Control Protocol: USB HID (Human Interface Device)
• Operating Current: ≈ 300 mA (When all 8 relays are active)
• Logic Level: 5 V (Internal USB logic)
• Operating Temperature: −10°C to +60°C

Mechanical Specifications:

• PCB Material: High-grade FR-4 double-sided fiberglass board
• Relay Type: SRD-12VDC-SL-C (or equivalent high-quality electromagnetic relay)
• Mounting Holes: 4 x 3 mm diameter holes for secure enclosure mounting
• Terminal Blocks: Robust screw-type terminals for secure wire connections

Dimensions:

• Board Length: ≈ 96.5 mm
• Board Width: ≈ 72 mm
• Board Height: ≈ 19 mm
• Weight: ≈ 115 g

Pinout and Wiring:

• USB Port: Connects to the host PC using a standard USB Type-A to Type-B cable.
• 12V Power Input: Connect a regulated 12 V_DC supply to the VCC and GND terminals to power the relay coils.
• NO (Normally Open): Connect this terminal to your load; it stays disconnected until you send the “ON” command.
• COM (Common): The center terminal that connects to the NO or NC pin depending on the relay state.
• NC (Normally Closed): Connect this terminal if you require the circuit to remain closed by default until the relay activates.

Datasheet Reference:

• Download 12V Relay Component Datasheet

Commonly Used in:

• PC-Based Automation: Controlling office equipment, server racks, or test benches directly from a desktop interface.
• Home Automation: Managing smart home lighting, fans, and garden irrigation systems through centralized software.
• Industrial Control: Operating small-scale actuators and motors within automated manufacturing environments.

Applications:

• Remote Switching: Turning devices on or off via the internet when combined with remote desktop or web-server software.
• Software-Defined Testing: Automating power-cycling during long-term hardware reliability tests.
• Media Installations: Synchronizing lights and mechanical effects with audio/video cues for exhibitions or theaters.

Equivalent Models:

• SainSmart 8-CH USB Relay: A popular alternative offering similar HID driverless functionality and power ratings.
• ICStation 8-Channel USB Relay: However, ensure the specific control software matches the HID commands of this model.
• Numato Lab 8 Channel USB Relay: Another high-reliability option that often uses a virtual COM port interface rather than HID.

Package Includes:

• 1 x 8 Channel Pc USB Intelligent Control Relay Module