1. Introduction
This manual provides detailed instructions for the setup, operation, and maintenance of your WOLF SHIELD Mini WiFi Hidden Camera, model BJ-V4. This device is designed for indoor surveillance, offering high-definition video streaming, night vision, and motion detection capabilities. Please read this manual thoroughly before using the product to ensure proper functionality and safety.
Package Contents
Verify that all items are present in the package:
- WOLF SHIELD Mini WiFi Hidden Camera (BJ-V4)
- USB Charging Cable
- Mounting Stand
- Mounting Screw
- Instruction Manual (this document)

Figure 1: WOLF SHIELD Mini WiFi Hidden Camera and its components.
2. Safety Information
- Indoor Use Only: This camera is designed for indoor environments. Do not expose it to rain, moisture, or extreme temperatures.
- Power Source: Use only the provided charging cable and a compatible USB power adapter (not included) to charge the device.
- Avoid Obstructions: Ensure the camera lens is not obstructed to maintain clear video quality.
- Operating Temperature: Operate the camera within the recommended temperature range to prevent damage.
- Disassembly: Do not attempt to disassemble or modify the camera. This will void the warranty and may cause damage.
- Children and Pets: Keep the camera and its accessories out of reach of children and pets to prevent accidental ingestion or damage.
3. Product Overview
The WOLF SHIELD Mini WiFi Hidden Camera (BJ-V4) is a compact and portable surveillance device. It features a high-definition lens, infrared LEDs for night vision, a PIR motion sensor, and a built-in rechargeable battery for extended standby time.
Key Features
- HD WiFi Streaming & Remote Access
- Up to 30-Day Standby Time
- Infrared Night Vision
- Smart Motion Detection Alerts
- Compact and Discreet Design
- Supports Micro SD Card up to 128GB (not included)
- App Control (Linklemo app)

Figure 2: Compact dimensions of the camera for discreet placement.

Figure 3: Overview of camera features and capabilities.
4. Setup
4.1 Charging the Camera
Before initial use, fully charge the camera. Connect the provided USB charging cable to the camera's charging port and to a USB power adapter (5V/1A recommended). The charging indicator light will illuminate during charging and turn off when fully charged. A full charge typically takes 3-4 hours.

Figure 4: Camera with an illustration of its 2000mAh battery for extended standby.
4.2 App Installation
The camera operates via a smartphone application. Search for "Linklemo" in your device's app store (Apple App Store for iOS or Google Play Store for Android) and install it. Alternatively, scan the QR code provided in the quick start guide (if applicable) to download the app.
4.3 Connecting to Wi-Fi
- Ensure your smartphone is connected to a 2.4GHz Wi-Fi network. This camera does not support 5GHz Wi-Fi.
- Open the Linklemo app and create an account or log in.
- Follow the in-app instructions to add a new device. This typically involves powering on the camera, resetting it if necessary (refer to camera's physical buttons), and scanning a QR code generated by the app with the camera's lens.
- Once connected, the camera's status indicator light will change (refer to app or quick start guide for specific light patterns).

Figure 5: The camera is controlled via a smartphone app, requiring a 2.4GHz Wi-Fi connection.
4.4 Mounting the Camera
The camera comes with a mounting stand and screw for flexible placement.
- Attach the camera to the mounting stand.
- Choose a suitable indoor location with a clear view of the area you wish to monitor.
- Use the provided screw to secure the mounting stand to a wall or ceiling, if desired. The camera can also be placed on a flat surface without mounting.
- Adjust the camera's angle for optimal coverage.
5. Operating Instructions
5.1 Live View and Recording
Once connected, open the Linklemo app and select your camera to access the live video feed. From the live view interface, you can:
- View real-time video.
- Manually record video or capture screenshots.
- Access recorded footage stored on the Micro SD card (if installed) or cloud storage (if subscribed).
- Enable/disable audio monitoring.

Figure 6: Real-time monitoring and sharing capabilities through the app.
5.2 Motion Detection Settings
The camera features a PIR (Passive Infrared) motion sensor to detect movement. When motion is detected, the camera can:
- Send instant push notifications to your smartphone.
- Automatically record video clips.
Adjust motion detection sensitivity and alert schedules within the app's settings to minimize false alarms.

Figure 7: PIR motion detection alerts for enhanced security.
5.3 Night Vision
The camera is equipped with infrared LEDs for automatic night vision. In low-light conditions, the camera will switch to night vision mode, providing clear black and white video footage.

Figure 8: Comparison of day and night vision capabilities.
5.4 Battery Management
The camera features a 2000mAh rechargeable battery, offering up to 30 days of standby time. Actual battery life varies based on usage, recording frequency, and Wi-Fi signal strength. Monitor the battery level through the Linklemo app and recharge as needed.
6. Maintenance
- Cleaning: Use a soft, dry cloth to clean the camera lens and body. Do not use liquid cleaners or abrasive materials.
- Storage: When not in use for extended periods, store the camera in a cool, dry place. Ensure the battery is partially charged (around 50%) before storage to prolong its lifespan.
- Firmware Updates: Periodically check the Linklemo app for available firmware updates to ensure optimal performance and security.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Camera frequently disconnects from Wi-Fi. | Weak 2.4GHz Wi-Fi signal; interference; incorrect Wi-Fi password. |
|
| Motion detection alerts are not received. | App notifications disabled; incorrect motion detection settings; camera offline. |
|
| Poor video quality. | Dirty lens; insufficient lighting; weak Wi-Fi signal. |
|
| Camera does not power on. | Battery depleted; charging cable/adapter issue. |
|
8. Specifications
| Feature | Detail |
|---|---|
| Model Name | BJ-V4 |
| Brand | WOLF SHIELD |
| Indoor/Outdoor Usage | Indoor |
| Connectivity Protocol | Wi-Fi (2.4GHz only) |
| Power Source | Battery Powered (2000mAh) |
| Video Capture Resolution | 720p |
| Special Features | Motion Sensor, Night Vision, Portable |
| Controller Type | Linklemo App |
| Mounting Type | Wall Mount (with included stand) |
| Material | Acrylonitrile Butadiene Styrene (ABS) |
| Item Dimensions (L x W x H) | 1.5 x 2.1 x 1.7 inches (3.8 x 5.3 x 4.3 cm) |
| Item Weight | 2.24 ounces (0.14 Pounds) |
| Flash Memory Supported Size Maximum | 128 GB (Micro SD card, not included) |
| Number of IR LEDs | 6 |
| UPC | 751018181921 |
9. Warranty and Support
WOLF SHIELD products are designed for reliability and performance. This product comes with a standard manufacturer's warranty against defects in materials and workmanship. Please refer to the product packaging or the official WOLF SHIELD website for specific warranty terms and conditions.
For technical support, troubleshooting assistance, or warranty claims, please contact WOLF SHIELD customer service through the contact information provided on our official website or within the Linklemo application. Please have your model number (BJ-V4) and purchase details ready when contacting support.





