1. Introduction
The Xiaomi Smart Cat Eye 2 is an advanced smart video doorbell system designed to enhance home security and convenience. It features a high-resolution camera, wide-angle lens, infrared night vision, a large indoor display, and two-way voice communication. This manual provides comprehensive instructions for the installation, operation, and maintenance of your device.

Xiaomi Smart Cat Eye 2 outdoor unit and indoor display.
2. Important Safety Information
- SD Card Requirement: An SD card used with this device must support Class 10 or higher for optimal performance.
- App Server Region: This product is a Chinese version. When connecting to the Mi Home App, please select 'Mainland China' as the APP server region. Servers from other countries are not supported.
- Door Compatibility: The product is suitable for installation on doors with a thickness of 35mm to 110mm and a cat eye aperture diameter of 15mm to 40mm. Ensure your door meets these specifications before installation.
3. Package Contents
Please check the box for the following items:
- Cat’s Eye Display ×1
- Card Holder (with cable shield) ×1
- Cat-Eye Camera ×1
- Charging Cable ×1
- Instruction Manual ×1
- M3×20 Screws ×2
- M3×40 Screws ×2
- M3×60 Screws ×2
- M3×80 Screws ×2
- Screwdriver ×1

Cat's Eye Display and Card Holder.

Cat-Eye Camera, Charging Cable, various screws, and a screwdriver.
4. Specifications
| Feature | Specification |
|---|---|
| Product Model | MJMYO1BY |
| Rated Input | 5V/2A |
| Battery Capacity | 8000mAh |
| Lens Angle | D180° |
| Video Resolution | 2048 x 1536 (3MP HD) |
| Screen Size | 5.0 inches |
| Screen Resolution | 1280 x 720 (720P HD) |
| Wireless Connectivity | Wi-Fi IEEE 802.11b/g/n/ax 2.4 GHz |
| Supported Door Thickness | 35-110mm |
| Supported Cat Eye Aperture | 15-40mm |
| Supported System | Android 8.0 or iOS 12.0 and above |
| Operating Temperature | -10°C ~ 45°C |
| Storage Method | Cloud storage + microSD card (supports 16GB-256GB capacity) |
| Intercom | Yes |
| Alarm | Yes |

Detailed product parameters.

Dimensions of the Xiaomi Smart Cat Eye 2 components.
5. Installation Guide
5.1. Remove the Original Cat's Eye
- Locate the original cat's eye on the outside of the door.
- Rotate the cat's eye from the inside of the door to remove it. Refer to the illustration below.
- Select the appropriate length of screws based on your door's thickness using the table provided.

Instructions for removing the old cat's eye and selecting screw length.
| Door Thickness (mm) | Screw Type |
|---|---|
| 35-49mm | M3 x 20 |
| 47-69mm | M3 x 40 |
| 67-89mm | M3 x 60 |
| 87-110mm | M3 x 80 |
5.2. Install the Cat-Eye Camera
- Select the appropriate screws based on your door panel thickness. Screw them into the screw holes of the cat's eye camera by approximately 5mm.
- Remove the protective paper from the back of the camera's adhesive sticker.
- Pass the screws and wires through the door panel. Ensure the cat-eye camera is square and the doorbell button is at the bottom. Stick the camera firmly onto the door.

Steps for installing the cat-eye camera.
5.3. Install the Card Holder (Mount)
- Remove the card holder from the cat's eye display. Then, remove the wire shield from the card holder.
- Push the cable connector into the buckle at the bottom of the card holder.
- Align the screws from the cat's eye camera through the screw holes on the card holder.
5.4. Fix the Card Holder
- Adjust the card holder so that the screw is securely positioned at the top of the screw hole. Tighten the remaining part of the screw to fix the card holder in place.
- Organize the wiring neatly and replace the cable shield.
5.5. Install the Cat's Eye Display
- Align the slide on the card holder and slide the cat's eye display into the card holder from top to bottom. Ensure that the clips on the card holder are fully embedded at the bottom of the cat's eye display.
- To remove the cat's eye display, push the display upward from the bottom of the mount.

Steps for installing and removing the indoor display unit.
6. App Connection
To connect your Xiaomi Smart Cat Eye 2 to the Mi Home App:
- Download and install the Mi Home App on your smartphone (Android 8.0+ or iOS 12.0+).
- Open the Mi Home App and navigate to 'Additional settings'.
- In the 'Language & region' section, ensure that the region is set to 'Chinese mainland'. This is crucial for the device to function correctly with the app.
- Follow the in-app instructions to add your new device.

Mi Home App region settings.
7. Operating Instructions
7.1. Viewing Visitors
The 5-inch 720P HD screen provides a clear view of who is at your door. When someone presses the doorbell, the display will automatically show the live feed from the outdoor camera, making it convenient for all family members, including the elderly and children, to see visitors.

The 5-inch HD screen displays visitors clearly.
7.2. Two-Way Voice Intercom
Communicate with visitors through the Mi Home App. You can initiate a video call from anywhere. For added security or privacy, a voice change function is available. The system also supports quick replies, such as "Please leave the express at the door," and allows you to customize your own voice reply content.

Two-way voice communication via the Mi Home App.
7.3. Night Vision
Equipped with 8 940nm infrared night vision lights and a high-sensitivity sensor, the doorbell provides clear imaging up to 5 meters even in complete darkness. The 940nm infrared technology ensures no disturbing red exposure, maintaining discreet surveillance.

Clear night vision with 940nm infrared fill light.
7.4. Motion Detection and AI Human Detection
The built-in dual PIR human body infrared sensors cover a wide 180° horizontal area. When motion is detected, the device immediately triggers video recording. You can adjust the detection sensitivity to three levels according to your needs. Local AI humanoid detection accurately filters out invalid alarm messages, reducing false alarms.

Dual PIR sensors detect movement outside the door.

Local AI human detection for accurate alerts.
7.5. Event Casting
The Xiaomi Smart Cat Eye 2 supports event casting, allowing you to link it with Xiaomi screen speakers and Xiaomi TV terminals. This feature enables real-time viewing of events on a larger screen.

Casting the doorbell feed to a larger screen.
8. Maintenance
8.1. Battery Charging
The device is equipped with an 8000mAh high-capacity battery for ultra-long battery life. It features a Type-C charging interface for convenient charging. Connect the provided charging cable to the Type-C port on the display unit and a compatible 5V/2A power adapter.

8000mAh battery for extended use.
8.2. Storage Management
The Xiaomi Smart Cat Eye 2 supports both cloud storage and local storage via a microSD card. Ensure your microSD card is Class 10 and has a storage capacity between 16GB and 256GB. Regularly check the storage status and manage recordings as needed through the Mi Home App.
8.3. General Care
Wipe the display and camera lenses with a soft, dry cloth. Avoid using abrasive cleaners or solvents that could damage the surfaces. Keep the device away from extreme temperatures and direct sunlight.
9. Troubleshooting
- No alerts when someone is near the door: Ensure that the motion detection feature is enabled in the Mi Home App settings. Check the detection sensitivity levels and adjust them if necessary. Verify that the app has the necessary permissions to send notifications.
- Poor image quality at night: Confirm that the 940nm infrared fill light is functioning. Ensure there are no obstructions blocking the camera's view or the infrared lights.
- Cannot connect to Mi Home App: Double-check that your smartphone's Wi-Fi is connected to a 2.4 GHz network. Most importantly, ensure the Mi Home App's server region is set to 'Mainland China'.
- Recording issues: Verify that a Class 10 microSD card (16GB-256GB) is properly inserted and formatted. Check the remaining storage space on both the microSD card and cloud storage (if subscribed).
10. User Tips
- Always ensure your Mi Home App region is set to 'Mainland China' for seamless operation and access to all features.
- For optimal video recording and storage, use a high-quality Class 10 microSD card.
- Experiment with the three levels of motion detection sensitivity to find the best setting for your environment, minimizing false alarms while ensuring effective monitoring.
- Utilize the voice change function in the two-way intercom for enhanced privacy and security when communicating with unknown visitors.
11. Warranty and Support
For warranty information and technical support, please refer to the official Xiaomi website or contact your local Xiaomi service center. Keep your purchase receipt as proof of purchase for warranty claims.





