1. Introduction
Thank you for choosing the Yoosee 4K 8MP WiFi Security Camera. This advanced surveillance system is designed to provide comprehensive security for both indoor and outdoor environments. Featuring a unique three-lens design, 10X optical zoom, dual-screen monitoring, AI humanoid tracking, and two-way audio, this camera offers superior clarity and intelligent detection capabilities. This manual will guide you through the setup, operation, and maintenance of your new security camera.
Two versions are available: a 6MP No Zoom model and an 8MP 10xZoom model. Both versions are equipped with infrared and white light LEDs for enhanced night vision.
2. Product Overview
The Yoosee 4K 8MP WiFi Security Camera is engineered for robust performance and ease of use. Its innovative design integrates multiple advanced features to ensure reliable monitoring.

Main product view highlighting 4K 8MP resolution, 10X zoom, and dual-screen functionality.
Demonstration video showcasing the camera's features including dual-screen view, PTZ control, 10X zoom, AI humanoid tracking, intrusion alarm, and two-way audio.
Key Features:
- Three Lens and Dual Screen: The camera features a unique three-lens system. The accompanying mobile application displays two video screens simultaneously: an upper screen for a fixed wide-angle view and a lower screen for a PTZ (Pan-Tilt-Zoom) camera with 10X optical zoom.
- 10X Optical Zoom: Allows you to zoom in to view detailed information of distant objects without loss of clarity, or zoom out for a broader perspective.
- Intelligent AI Humanoid Tracking: Real-time recognition and intelligent monitoring with AI-powered human detection and auto-tracking. The camera can follow detected human figures, ensuring critical events are captured.
- Smart Dual Light Modes: Equipped with both infrared LEDs and white light LEDs. It supports full-color mode, infrared mode, and a double-light alert mode. In double-light mode, infrared night vision is active until motion is detected, at which point the white lights illuminate for full-color recording and a visual deterrent.
- Real Two-Way Audio: Built-in microphone and speaker allow for clear two-way communication. You can listen to what's happening and speak through the camera to warn intruders or communicate with visitors.
- PTZ Function: Offers extensive pan (0°-360°) and tilt (-10°-180°) movement ranges, allowing for comprehensive coverage of your surveillance area.
- IP66 Waterproof and Dustproof: Designed to withstand various weather conditions, including rain, snow, and wind, ensuring proper operation and continuous security.

Visual representation of the 10X zoom feature, showing progressive magnification.

Illustration of human detection and auto-tracking, with a mobile notification example.

Visual comparison demonstrating the clarity of full-color night vision versus standard infrared.

Example of two-way audio communication with a delivery person.

Diagram illustrating the camera's pan and tilt capabilities.

Visuals demonstrating the camera's weather resistance against lightning, snow, dust, and rain.
3. Specifications
| Feature | Detail |
|---|---|
| Brand Name | DiFang |
| Model Number | BL26D |
| Megapixels | 8MP (4K resolution, achieved with dual 4MP lenses) |
| Lens Quantity | Tri-Lens |
| Zoom Type | Digital zoom (10X Optical Zoom available on specific models) |
| Lens (mm) | 2mm |
| Sensor | CMOS |
| Connectivity | WIFI (2.4GHz) |
| Audio Output | Two Way Audio |
| AI Functions | Motion Detection, AI Auto Tracking |
| Color Night Vision | Yes |
| IR Distance (m) | 10m |
| Viewing Angle | 360° |
| Movement Range (Pan) | 0°-360° |
| Movement Range (Tilt) | -10°-180° |
| IP Rating | IP66 (Waterproof / Weatherproof) |
| Operating Temperature | -10°-60° |
| Power Supply | Normal, 12V |
| Power Consumption (W) | 25W |
| Internal Storage | Available in 32G, 64G, 128G options (TF Card slot for expansion may be present) |
| Supported Mobile Systems | Android, iOS |
| Supported Operating Systems | Windows 98, XP, Vista, 7, macOS, 8, 10, 2000, 2008, 2003 |
| Installation | Normal, Wall Mounted, Stick, Pendant Mount, Vertical Pole Mount |
| Color | WHITE |
| Product Dimensions | 118mm (width) x 135mm (height) x 75mm (depth) |

Detailed product dimensions.
4. Setup Guide
Follow these steps to set up your Yoosee 4K 8MP WiFi Security Camera:
- Unpack and Inspect: Carefully remove all components from the packaging. Ensure all parts are present and undamaged.
- Power Connection: Connect the camera to a 12V power source using the provided power adapter.
- Installation Location: Choose a suitable location for installation. The camera supports various mounting options including normal, wall mounted, stick, pendant mount, and vertical pole mount. Ensure the location provides a clear view of the area you wish to monitor and is within range of your WiFi network.
- Network Connection: Your camera supports three connection methods:
- Wireless WiFi Connection: Connect the camera to your 2.4GHz WiFi network.
- RJ-45 Wired Cable Connection: For a more stable connection, connect the camera directly to your router using an Ethernet cable.
- AP Hotspot Mode Connection: For direct connection to a mobile device within 10 meters, use the camera's built-in AP hotspot.
- App Download and Configuration: Download the Yoosee app from your mobile device's app store (available for Android and iOS). Follow the in-app instructions to add your camera and complete the initial configuration.

Diagram illustrating the three available connection methods.
5. Operating Instructions
Once your camera is set up and connected to the Yoosee app, you can utilize its full range of features:
- Live View and Dual Screen: Open the Yoosee app to access the live feed. The app will display two video screens: the upper screen shows a fixed wide-angle view, and the lower screen shows the PTZ camera view.
- PTZ Control: Use the on-screen controls in the app to pan the camera horizontally (0°-360°) and tilt it vertically (-10°-180°) to adjust the viewing angle.
- 10X Optical Zoom: For models equipped with 10X optical zoom, use the pinch-to-zoom gesture or dedicated controls in the app to magnify the image for more detail.
- Two-Way Audio: Tap the microphone icon in the app to speak through the camera's speaker. Tap the speaker icon to listen to audio from the camera's microphone.
- Night Vision Modes:
- Infrared Mode: Provides clear black and white video in low-light conditions.
- Full-Color Mode: When sufficient ambient light is available or white LEDs are activated, the camera records in full color.
- Double-Light Alert Mode: Automatically switches from infrared to full-color vision and activates white LEDs upon motion detection, serving as a visual deterrent and enhancing recording detail.
- AI Humanoid Tracking: Enable AI Humanoid Tracking in the app settings. The camera will automatically detect and follow human figures within its field of view, sending alerts to your mobile device.
- Local Alarm: The camera features a local alarm function that can be triggered upon detection of suspicious activity, providing an audible deterrent.
- Recording and Playback: The camera continuously records to its internal storage (32G/64G/128G options). You can access recorded footage and play it back through the Yoosee app.
6. Maintenance
To ensure optimal performance and longevity of your security camera, follow these maintenance guidelines:
- Regular Cleaning: Periodically clean the camera lenses and housing with a soft, damp cloth. Avoid using harsh chemicals or abrasive materials that could scratch the lens.
- Check Connections: Ensure all power and network connections are secure and free from corrosion or damage.
- Firmware Updates: Regularly check the Yoosee app for available firmware updates. Keeping your camera's firmware up-to-date ensures you have the latest features and security enhancements.
- Environmental Considerations: While the camera is IP66 rated for outdoor use, avoid directing high-pressure water jets directly at the unit. Ensure it operates within the specified temperature range of -10°C to 60°C.
7. Troubleshooting
If you encounter issues with your camera, refer to the following troubleshooting tips:
- Camera Not Powering On:
Ensure the 12V power adapter is correctly connected to the camera and a working power outlet. Check for any damage to the power cable. - Cannot Connect to WiFi:
Verify that your WiFi network is 2.4GHz. Ensure the camera is within range of your router. Restart your router and the camera, then attempt to reconnect through the Yoosee app. - Poor Image Quality:
Check if the camera lens is clean and free from obstructions. Ensure the camera is receiving adequate power. If using WiFi, check your network signal strength. - AI Tracking Not Working:
Confirm that AI Humanoid Tracking is enabled in the Yoosee app settings. Ensure the camera's view is clear and not obstructed. - No Two-Way Audio:
Check the microphone and speaker settings in the Yoosee app. Ensure your phone's volume is up and the camera's microphone/speaker are not muted. - App Not Responding:
Close and reopen the Yoosee app. If the issue persists, restart your mobile device and the camera. Ensure your app is updated to the latest version.
8. User Tips
- Yoosee App: For optimal control and access to all features, ensure you are using the official Yoosee application.
- Optimal Placement: For best AI tracking performance, position the camera where human figures are likely to enter the frame clearly, avoiding excessive background clutter.
- Power Stability: Use a stable power supply to prevent interruptions in recording and connectivity.
9. Warranty and Support
DiFang provides a one-year quality warranty for all products. Additionally, lifetime technical support is available to assist you with any questions or issues you may encounter with your camera.
For technical assistance or warranty claims, please contact DiFang customer support through the contact information provided at the point of purchase.