1. Introduction
The Quason XY5008 DC-DC Buck Converter is a high-performance, digitally controlled adjustable regulated power supply module. It features a 1.8-inch large LCD display, synchronous rectification for high efficiency (typically 95%), and offers precise control over output voltage and current. Available in a standard version (XY5008) and a high-configuration version with WiFi communication (XY5008-W), this module is suitable for a wide range of laboratory, DIY, and industrial applications requiring stable and adjustable power.
The XY5008-W model extends functionality with mobile APP and PC software control, enabling real-time communication and remote monitoring over LAN or external networks.

2. Safety Warnings and Precautions
- WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
- This product is a DC step-down digitally controlled regulated power supply. The output voltage must always be lower than the input voltage (pressure difference > 0.05%+1V).
- Do not use this module with AC power. Ensure the input voltage does not exceed the specified voltage range.
- Do not connect non-original accessories to the temperature sensor, fan, or other interfaces on the motherboard to prevent damage to the device.
- Ensure proper ventilation during operation, especially when drawing high currents, to prevent overheating.
- Always verify wiring connections before applying power to avoid short circuits or damage.
Protection Mechanisms:
The device incorporates several protection features:
- Hardware Protection:
- Input anti-reverse connection protection.
- Output short-circuit protection (short circuit does not burn).
- Software Protection:
- Over Voltage Protection (OVP)
- Over Current Protection (OCP)
- Over Power Protection (OPP)
- Over Temperature Protection (OTP)
- Input Under Voltage Protection (LVP)

3. Package Contents
Please check the contents of your package. Depending on the version purchased, your package may include:
- XY5008 DC-DC Buck Converter Module (Main Unit)
- Infrared Remote Control
- Connecting Wires
- For XY5008-W (WiFi Version) only: WiFi Communication Module

4. Specifications
| Parameter | Value |
|---|---|
| Input Voltage | DC 6.0V ~ 55V (Ultimate low 5.5V, extreme high 60V) |
| Output Voltage | DC 0.0V ~ 50V |
| Output Current | 0.000A ~ 8.100A |
| Output Power | 0 ~ 400W |
| Typical Output Ripple | Vpp-150mv |
| Voltage Resolution | 0.01V |
| Current Resolution | 0.001A |
| Voltage Accuracy | ±0.4% + 1 byte |
| Current Accuracy | ±0.5% + 3 bytes |
| Capacity Measurement | 0-999999AH |
| Energy Measurement | 0-999999WH |
| Time Measurement | 0-1000 hours |
| Dimensions (L*W*H) | 79mm * 42mm * 41mm |
| Operating Temperature | -40°C ~ +85°C |
| Application | Computer, Laboratory, DIY |
| Type | Voltage Regulator |


5. Setup Instructions
5.1 Wiring the Module
Connect the input and output wires to the designated terminal blocks on the module. Ensure correct polarity (VIN+ to positive input, VIN- to negative input, OUT+ to positive load, OUT- to negative load).

5.2 Connecting the WiFi Module (XY5008-W only)
For the XY5008-W version, connect the WiFi communication module to the dedicated interface on the main unit using the provided connecting wires. Ensure the connector is properly seated.


6. Operating Instructions
6.1 Main Interface Overview
The 1.8-inch LCD display provides real-time information and control options. The main interface shows output voltage, current, power, set voltage/current, CC/CV mode, ON/OFF status, product temperature, WiFi status, remote control enable, buzzer status, and brightness/screen off time.


6.2 Remote Control Operation
The included infrared remote control allows for convenient adjustment and control of the module's functions.

| Key/Combination | Function |
|---|---|
| ON/OFF | Turn on/off power output |
| U-SET | Set output voltage |
| I-SET | Set current |
| Shift | Function key Shift |
| OK | Confirm/select |
| Direction Arrows (Up/Down/Left/Right) | Up and down adjustment, left and right shift/page turning |
| Numbers (0-9) | Numeric keypad for direct input (e.g., for voltage/current settings) |
| Shift + Up/Down | Turn on and off the buzzer |
| Shift + Left/Right | Brightness adjustment (B0-B5, 6-block brightness) |
| Shift + Lock/Unlock | Lock/unlock keys |
| Shift + M0-M9 | Quickly recall data group M0-M9 |
6.3 Screen Rotation
The screen supports four-way rotation to achieve the ideal viewing angle for various installation directions. Long press the ON/OFF button for 2 seconds to rotate the screen in four directions.

6.4 Theme Color Customization
You can change the foreground and background colors of the display. Short press the rotary encoder button, select the corresponding position, and use the rotary encoder to switch between 64 available theme colors.

6.5 WiFi/APP/PC Control (XY5008-W only)
The XY5008-W version allows for advanced control and monitoring via mobile applications and PC software.
Network Connection:
The product connects to your router's 2.4G WiFi network. It supports direct communication within a Local Area Network (LAN) and external network control via a server, allowing you to control and view data remotely without distance limitations, provided there is network access.

APP Download:
- Apple iOS: Search for "Xinyilian" or "sinilink" in the Apple App Store.
- Android: Download from https://m.pp.cn/detail.html?ch_src=pp_dev&appid=7921907&ch=default or the official website: http://www.sinilink.com/release.apk. Alternatively, search for "Xinyilian" in PP Assistant or scan a QR code provided by the seller. For international users, search "sinilink" in Google Play Store.
PC Software Download:
- Download the computer client software from: http://www.sinilink.com/download/tools/Sinilink-Setup.exe.
The app interface supports adding multiple devices and is compatible with both Android and iOS systems. The WiFi module also supports voice control via platforms like Tmall Genie, Baidu Voice, and Xiao Ai.
7. Maintenance
- Keep the module clean and free from dust. Use a soft, dry cloth for cleaning.
- Avoid exposing the device to moisture, extreme temperatures, or corrosive environments.
- Ensure adequate airflow around the module, especially the fan, to prevent overheating. The intelligent silent temperature-controlled fan will automatically activate when the temperature exceeds 50 degrees Celsius or the current exceeds 2A.
- Regularly check all connections for tightness and signs of wear.

8. Troubleshooting
| Problem | Possible Cause / Solution |
|---|---|
| No output voltage or device not powering on. |
|
| Output shuts down unexpectedly. |
|
| WiFi module not connecting (XY5008-W). |
|
| Remote control not responding. |
|
9. User Tips
- The XY5008 is highly versatile and can be used as a general power supply for various electronic projects, charging batteries, or as a laboratory power source.
- Take advantage of the adjustable voltage and current features to precisely control power delivery for sensitive components or specific charging requirements.
- For the XY5008-W model, utilize the mobile APP or PC software for convenient remote monitoring and control, especially in setups where direct access to the module is limited.
- The 1.8-inch large screen offers excellent readability from various angles, making it easy to monitor parameters during operation.
- The remote control provides an efficient and fast way to adjust settings without needing to interact directly with the module's rotary encoder.
10. Warranty and Support
For warranty information, technical support, or service inquiries, please contact your original point of purchase or the manufacturer directly. Keep your purchase receipt as proof of purchase.
Manufacturer: Quason Official Store
Website: Refer to the official Sinilink website for software downloads and additional resources.





