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. Uvod
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. Proizvod je gotovview

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 Ključne karakteristike
- 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. Specifikacije
| Parametar | Vrijednost |
|---|---|
| Specifikacija releja | 10A 250VAC / 10A 125VAC / 10A 30VDC / 10A 28VDC |
| Napajanje | 5V DC |
| Tip releja | 5V Relay |
| Vrsta kontakta | NC / COM / NO (Normally Closed / Common / Normally Open) |
| Ulazna struja | ≤300mA |
| Max Load | AC250V/10A or DC30V/10A |
| Podržani OS | Win XP/Win7/Win8 32-bit/64-bit systems |
| Current Consumption | 300 mA |
| Dimenzije (D x Š x V) | 93 mm x 70 mm x 16 mm |
| PCB Parameters | FR4 / 1.5mm / two layers / metalized holes / HAL / white stamp / maska za lemljenje |
4. Postavljanje i instalacija
- Priključak za napajanje: 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.
- USB veza: 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.
- Učitavanje veze: Identify the Normally Open (NO), Normally Closed (NC), and Common (COM) terminals for each relay.
- Normalno otvoren (NE): The circuit is open (disconnected) when the relay is de-energized and closes (connects) when the relay is energized.
- Normalno zatvoreno (NC): The circuit is closed (connected) when the relay is de-energized and opens (disconnects) when the relay is energized.
- Uobičajeno (COM): The common terminal for the relay switch.
5. Uputstvo za upotrebu
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 Softverska kontrola
- Preuzmite softver: Obtain the latest control software and example code from the UIOTEC official webstranicu ili pružene resurse.
- Pokreni aplikaciju: Run the provided software application on your Windows PC.
- Kontrola releja: 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 Programming Examples
UIOTEC provides software examples for various programming languages, facilitating custom application development:
- VB6
- BCB6
- Java (NetBeans)
- VB.NET 2010 Express
- C++.NET 2010 Express
Pogledajte priloženi prample code and documentation for integrating the relay module into your own projects.
6. Održavanje
- čišćenje: Keep the module clean and free from dust. Use a soft, dry cloth for cleaning. Do not use liquid cleaners or solvents.
- Okruženje: Operate the module in a dry environment, away from moisture, extreme temperatures, and corrosive substances.
- Veze: Povremeno provjeravajte sve električne spojeve kako biste bili sigurni da su sigurni i da nema korozije.
- Skladištenje: When not in use for extended periods, store the module in an anti-static bag in a cool, dry place.
7. Otkrivanje problema
| Problem | Mogući uzrok | Rješenje |
|---|---|---|
| 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. |
| LED indikatori ne rade. | 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. |
| Rad sa prekidima. | 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. Prijave
The UIOTEC SRD-05VDC-SL-C 8-Way 5V Relay Module is versatile and can be used in various projects, including:
- Robotics control
- Sistemi kućne automatizacije
- Controlling doors and windows via a Windows system
- General controller power supply applications
9. Sadržaj paketa
Nakon otvaranja paketa, trebali biste pronaći sljedeći artikal:
- 1 x UIOTEC SRD-05VDC-SL-C 8-Channel USB Relay Module
10. Garancija i podrška
For warranty information, technical support, or further inquiries, please refer to the official UIOTEC webweb-mjesto ili direktno kontaktirajte njihovu korisničku službu. Sačuvajte račun za eventualne reklamacije u slučaju garancije.
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