UIOTEC SRD-05VDC-SL-C
UIOTEC SRD-05VDC-SL-C 8-Way 5V Relay Module User Manual
Model: SRD-05VDC-SL-C
Brand: UIOTEC
1. Introducere
The UIOTEC SRD-05VDC-SL-C is an 8-channel USB controlled relay module designed for ON/OFF switching of electrical devices. It is suitable for various applications including home automation, robotics, and PC intelligent control systems. This module utilizes HID technology, eliminating the need for specific drivers, offering plug-and-play functionality with Windows XP, 7, and 8 (32-bit and 64-bit) systems.
2. Produs terminatview

Figure 1: UIOTEC SRD-05VDC-SL-C 8-Way 5V Relay Module. This image shows the red PCB board with eight blue relays, green screw terminals on both sides, a USB Type-B port, and a DC power jack.
2.1 Caracteristici cheie
- HID technology for driver-free, plug-and-play operation.
- Compatibility with Windows XP/7/8 (32-bit and 64-bit systems).
- High-performance USB controller chip and military-grade PCB production.
- Eight 5V relays, capable of controlling loads up to 250V 10A AC or 30V 10A DC.
- Reserved 4-way and 8-way power interfaces for maintaining relay state even when USB is disconnected or PC is off. (Note: 1-way and 2-way versions do not have this power connector).
- LED indicators for power and each relay output.
3. Specificații
| Parametru | Valoare |
|---|---|
| Specificația releului | 10A 250VAC / 10A 125VAC / 10A 30VDC / 10A 28VDC |
| Alimentare electrică | 5V DC |
| Tipul de releu | Releu 5V |
| Tip de contact | NC / COM / NO (Normally Closed / Common / Normally Open) |
| Curent de intrare | ≤300mA |
| Încărcare maximă | AC250V/10A or DC30V/10A |
| Sistem de operare acceptat | Win XP/Win7/Win8 32-bit/64-bit systems |
| Consumul curent | 300 mA |
| Dimensiuni (L x l x H) | 93 mm x 70 mm x 16 mm |
| PCB Parameters | FR4 / 1.5mm / two layers / metalized holes / HAL / white stamp / masca de lipit |
4. Configurare și instalare
- Conexiune de alimentare: Connect a 5V DC power supply to the module's DC power jack or the DC+ / DC- screw terminals. Ensure the power supply can provide at least 300mA. For 4-way and 8-way modules, this external power supply allows the relay state to be maintained even if the USB connection is lost.
- Conexiune USB: Connect the module to your computer's USB port using a standard USB cable. The module will be recognized automatically as a HID device, requiring no additional driver installation.
- Conexiune de încărcare: Identify the Normally Open (NO), Normally Closed (NC), and Common (COM) terminals for each relay.
- Normal deschis (NU): The circuit is open (disconnected) when the relay is de-energized and closes (connects) when the relay is energized.
- Normal închis (NC): The circuit is closed (connected) when the relay is de-energized and opens (disconnects) when the relay is energized.
- Common (COM): Terminalul comun pentru comutatorul releului.
5. Instrucțiuni de utilizare
The UIOTEC SRD-05VDC-SL-C module is controlled via software running on your PC. UIOTEC provides universal software compatible with their relay boards, along with example code for various programming environments.
5.1 Controlul software-ului
- Descărcați software: Obtain the latest control software and example code from the UIOTEC official website or the provided resources.
- Lansați aplicația: Run the provided software application on your Windows PC.
- Control releu: The software interface will typically allow you to individually control each of the 8 relays (e.g., turn ON/OFF). Observe the LED indicators on the module, which will illuminate when a corresponding relay is energized.
5.2 Exemplu de programareamples
UIOTEC provides software examples for various programming languages, facilitating custom application development:
- VB6
- BCB6
- Java (NetBeans)
- VB.NET 2010 Express
- C++.NET 2010 Express
Consultați example code and documentation for integrating the relay module into your own projects.
6. Întreținere
- curatenie: Păstrați modulul curat și fără praf. Folosiți o cârpă moale și uscată pentru curățare. Nu utilizați agenți de curățare lichizi sau solvenți.
- Mediu: Operate the module in a dry environment, away from moisture, extreme temperatures, and corrosive substances.
- Conexiuni: Verificați periodic toate conexiunile electrice pentru a vă asigura că sunt sigure și fără urme de coroziune.
- Depozitare: When not in use for extended periods, store the module in an anti-static bag in a cool, dry place.
7. Depanare
| Problemă | Cauza posibila | Soluţie |
|---|---|---|
| Module not recognized by PC. | USB cable faulty; USB port faulty; Module not powered correctly. | Try a different USB cable and/or USB port. Ensure 5V DC power is supplied to the module. Check device manager for HID device recognition. |
| Relays not switching. | Incorrect software command; Insufficient power supply; Overload on relay. | Verify software commands are correct. Ensure stable 5V DC power. Check if the connected load exceeds relay specifications. |
| Indicatorii LED nu funcționează. | No power to module; Faulty LED. | Check power supply connection. If power LED is off, troubleshoot power. If individual relay LEDs are off, check software commands. |
| Funcționare intermitentă. | Unstable power supply; Loose connections; Electromagnetic interference. | Use a stable 5V DC power supply. Secure all connections. Keep module away from strong electromagnetic fields. |
8. Aplicații
The UIOTEC SRD-05VDC-SL-C 8-Way 5V Relay Module is versatile and can be used in various projects, including:
- Robotics control
- Sisteme de automatizare a locuințelor
- Controlling doors and windows via a Windows system
- General controller power supply applications
9. Conținutul pachetului
La deschiderea pachetului, ar trebui să găsiți următoarele articole:
- 1 x UIOTEC SRD-05VDC-SL-C 8-Channel USB Relay Module
10. Garanție și asistență
For warranty information, technical support, or further inquiries, please refer to the official UIOTEC website-ul lor web sau contactați direct serviciul lor de asistență pentru clienți. Păstrați bonul fiscal pentru orice reclamații în garanție.
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