1. Introduction
The eufy Security Indoor Cam C120 2-Cam Kit provides comprehensive indoor surveillance with advanced features designed to keep your home secure. This kit includes two 2K resolution cameras, offering clear video quality, human and pet AI detection, two-way audio communication, and compatibility with various voice assistants. Enjoy peace of mind with local storage options and smart notifications.

Image: The eufy Security Indoor Cam C120, a compact white camera with a black lens, shown on its stand.
2. What's Included
Your eufy Security Indoor Cam C120 2-Cam Kit package contains the following items:
- 2x eufy Security Indoor Cam
- 2x USB Adapter
- 2x USB Cable
- 2x Mounting Bracket
- 2x Screw Pack
- 1x Quick Guide
3. Setup
3.1. Initial Setup
- Download the eufy Security App: Search for "eufy Security" in your device's app store and download the application.
- Power On the Camera: Plug the provided USB cable into the camera's micro USB port and connect the USB adapter to a power outlet. The camera will power on automatically.
- Add Device in App: Open the eufy Security app, create an account or log in, and follow the on-screen instructions to add your Indoor Cam C120. This typically involves scanning a QR code on the camera or selecting the model from a list.
- Wi-Fi Connection: Ensure your camera is connected to a 2.4GHz Wi-Fi network. The Indoor Cam C120 does not support 5GHz Wi-Fi.
- HomeKit Activation (Optional): If you plan to use Apple HomeKit, you must first add the device in the eufy Security app and then complete the activation process within the HomeKit application.
3.2. Mounting the Camera
The camera comes with a mounting bracket and screw pack for flexible placement. You can place it on a flat surface or mount it to a wall or ceiling.
- Desktop Placement: Simply place the camera on a flat, stable surface. The adjustable stand allows you to angle the camera as needed.
- Wall/Ceiling Mount: Use the provided mounting bracket and screws to secure the camera to your desired location. Ensure the camera is positioned to capture the desired area. If mounting on a ceiling, you can rotate the image 180° in the app settings.

Image: A eufy Security Indoor Cam C120 placed on a shelf, demonstrating its compact size and versatile placement.
4. Operating the Camera
4.1. Key Features
- 2K Clarity: View every event in up to 2K resolution (1080P when using HomeKit) for detailed footage.
- Human and Pet AI: The on-device AI intelligently detects whether a human or pet is present, reducing false alarms.
- Two-Way Audio: Communicate in real-time with anyone near the camera using the built-in microphone and speaker.
- Night Vision: Advanced night vision allows for clear monitoring in low-light conditions.
- Smart Integration: Connect to Apple HomeKit, Google Assistant, or Amazon Alexa for voice control and integrated surveillance.
4.2. AI Detection and Smart Notifications
The camera's on-device AI distinguishes between humans and pets, allowing you to customize notifications based on your preferences. You can define specific activity zones within the camera's view to only receive alerts for motion in critical areas.

Image: A smartphone displaying a notification for human detection by the eufy Security camera.

Image: A smartphone displaying a notification for pet detection by the eufy Security camera.
4.3. Two-Way Audio
Use the two-way audio feature to speak directly through the camera. This is useful for communicating with family members, pets, or deterring unwanted visitors.

Image: A smartphone screen showing a live view from the eufy Security camera with a two-way audio interface.
4.4. Video Storage
The Indoor Cam C120 supports local storage via a MicroSD card (not included, max 128GB). This allows you to store recordings directly on the device without a monthly subscription. Cloud storage options are also available if you choose to use cloud-based features, such as push notifications with thumbnail previews.

Image: Icons representing local storage (MicroSD card) and cloud storage options for the eufy Security camera.
5. Maintenance
- MicroSD Card: A MicroSD card is required for local video storage and is not included in the package. Ensure you purchase a compatible card (up to 128GB) for continuous recording.
- Indoor Use Only: The Indoor Cam C120 is not waterproof and is designed for indoor use only. Avoid exposing it to moisture or outdoor elements.
- Firmware Updates: Regularly check the eufy Security app for firmware updates to ensure optimal performance and access to the latest features. Firmware version v.2.0.6.9 or newer is recommended.
6. Troubleshooting
6.1. Connectivity Issues
- Wi-Fi Connection: Ensure your router is broadcasting a 2.4GHz Wi-Fi signal. The camera does not support 5GHz networks.
- App Connectivity: If the app cannot connect to the camera, ensure the camera is powered on and within range of your Wi-Fi router. Restarting the camera and your router may resolve the issue.
6.2. Detection and Notification Problems
- False Alarms: Adjust the activity zones and sensitivity settings within the eufy Security app to minimize unwanted notifications from shadows or non-critical movements.
- Missing Notifications: Verify that motion detection and notification settings are correctly configured in the app. Ensure the camera's view is not obstructed.
6.3. HomeBase 3 Compatibility
The Indoor Cam C120 is compatible with HomeBase 3 for storage functions. However, advanced features such as BionicMind, specific modes, and automation are not yet supported through HomeBase 3 integration.
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | T84031W1 |
| Video Capture Resolution | 1080p, 2K |
| Connectivity Technology | Wi-Fi (2.4GHz only) |
| Indoor/Outdoor Usage | Indoor |
| Special Feature | Human and Pet AI, Two-Way Audio, Night Vision, Easy to Install |
| Compatible Devices | HomeBase 3, Apple HomeKit, Google Assistant, Amazon Alexa |
| Power Source | Corded Electric (5V, 9W) |
| Field Of View | 120 Degrees |
| Storage | MicroSD card (max 128GB, not included) |
| Item Dimensions | 2.24 x 2.24 x 4.11 inches |
| Item Weight | 0.45 Pounds |
8. Warranty & Support
8.1. Warranty Information
For detailed warranty information about this product, please refer to the official eufy Security website or the documentation provided with your purchase. Warranty policies typically cover manufacturing defects for a specified period.
8.2. Customer Support
If you encounter any issues or have questions regarding your eufy Security Indoor Cam C120, please utilize the following resources:
- eufy Security App: The app often contains FAQs, troubleshooting guides, and direct access to customer support.
- Online Forums: Visit official eufy Security community forums for peer support and additional troubleshooting tips.
- Manufacturer Website: Access the eufy Security website for product support, updated manuals, and contact information.





