1. Introduction
The ZOSI C518 4MP Indoor Pan/Tilt Smart Home Security Camera is designed to provide comprehensive surveillance for your indoor spaces. Featuring 4MP Ultra HD resolution, dual-band Wi-Fi connectivity, and advanced AI-powered detection, this camera offers reliable monitoring for pets, babies, and general home security. Its pan and tilt capabilities ensure a wide viewing angle, while two-way audio and an instant call button facilitate communication.
2. Package Contents
Verify that all items are present in your package:
- ZOSI C518 Camera
- Power Adapter
- Mounting Screw Bag
- Mounting Template
- Quick Start Guide

3. Product Overview
The ZOSI C518 camera offers a range of features for enhanced home security and monitoring:
- 4MP Ultra HD Resolution: Delivers clear 2560x1440 video, providing 1.6 times more detail than 1080p.
- Dual-Band WiFi: Supports both 2.4G and 5G Wi-Fi for stable and faster connectivity.
- Pan & Tilt Functionality: Offers 355° horizontal pan and 90° vertical tilt for a 360° viewing angle.
- Smart Auto-Tracking: Automatically follows detected human movement within its field of view.
- Human Detection: AI-powered algorithm distinguishes people from other objects, reducing false alarms.
- Two-Way Audio: Built-in microphone and speaker allow for real-time communication.
- Instant Call Button: A dedicated button on the camera allows family members to initiate a call to your phone.
- Enhanced Night Vision: Provides clear black and white video up to 33 feet (10 meters) in low-light conditions.
- Multiple Storage Options: Supports local storage via MicroSD card (up to 256GB, sold separately) and optional cloud storage.
- Privacy Protection: Create custom detection zones and privacy masks to protect sensitive areas.


4. Setup Guide
4.1 Initial Power-On
- Connect the provided power adapter to the camera's USB-C port and plug it into a power outlet.
- Wait for the camera to power on and indicate readiness (usually a blinking LED light).
4.2 App Download and Account Creation
- Download the 'ZOSI Smart' app from your smartphone's app store (iOS or Android).
- Open the app and create a new account or log in if you already have one.
4.3 Camera Connection
- In the ZOSI Smart app, tap the '+' icon to add a new device.
- Follow the on-screen instructions to connect the camera to your 2.4G or 5G Wi-Fi network. This typically involves scanning a QR code displayed on your phone with the camera.
- Once connected, the camera's LED indicator will change to a solid color, and you will see the live feed in the app.
5. Operating Instructions
5.1 Live View and Pan/Tilt Control
- Open the ZOSI Smart app and select your C518 camera to view the live feed.
- Use the on-screen joystick or swipe gestures to remotely control the camera's pan (horizontal) and tilt (vertical) movements.

5.2 Two-Way Audio
- While in live view, tap the microphone icon in the app to speak through the camera.
- Tap the speaker icon to hear audio from the camera's location.

5.3 Instant Call Button
- Press the call button on the front of the camera to initiate a call to the linked smartphone app.
- You will receive a notification on your phone, allowing you to answer the call via voice or video.

6. Advanced Features
6.1 Smart Detection & Auto-Tracking
- Enable Human Detection in the app settings to receive alerts only when a person is detected, minimizing false alarms.
- Activate Auto-Tracking to have the camera automatically follow moving subjects.


6.2 Privacy Settings
- Set custom detection zones to focus monitoring on specific areas.
- Utilize privacy masks to block out areas you do not wish to record.
6.3 Gesture Detection
- The camera supports gesture detection, allowing users to initiate a call by performing a specific gesture (e.g., an 'OK' sign) in front of the camera.
7. Storage Options
The ZOSI C518 offers flexible recording and storage solutions:
- Local Storage: Insert a MicroSD card (up to 256GB, sold separately) into the camera's slot for continuous recording without monthly fees.
- Cloud Storage: A 30-day free trial is available for secure cloud storage, providing off-site backup of your recordings.
- NVR Compatibility: The camera can also work with a ZOSI NVR for 24/7 recording.

8. Mounting Options
The ZOSI C518 camera is designed for versatile indoor placement:
- Tabletop Mount: Place the camera on any flat surface such as a table, shelf, or desk.
- Wall/Ceiling Mount: Use the included mounting bracket and screws to securely attach the camera to a wall or ceiling. Ensure the camera is oriented correctly in the app settings if mounted upside down.
9. Specifications
| Feature | Specification |
|---|---|
| Indoor/Outdoor Usage | Indoor |
| Video Capture Resolution | 4MP (2560x1440) |
| Connectivity Protocol | Wi-Fi (2.4G & 5G Dual-Band) |
| Viewing Angle | 360 Degrees (Pan/Tilt) |
| Night Vision Range | 33 Feet |
| Two-Way Audio | Yes |
| Human Detection | Yes |
| Auto-Tracking | Yes |
| Local Storage | MicroSD Card (up to 256GB, not included) |
| Cloud Storage | Optional (30-day free trial) |
| Power Source | Corded Electric |
| Compatible Devices | Smartphone, Tablet, Amazon Alexa |
| Product Dimensions | 4 x 3 x 3 inches |
| Item Weight | 14.4 ounces |
10. Troubleshooting
- Camera not connecting to Wi-Fi: Ensure your Wi-Fi network is 2.4G or 5G and the password is correct. Place the camera closer to your router during setup.
- Poor video quality: Check your internet connection speed. Ensure the camera lens is clean and free from obstructions.
- False motion alerts: Adjust the sensitivity of motion detection in the app settings. Define specific detection zones to exclude high-traffic areas.
- Two-way audio issues: Ensure your phone's volume is up and the microphone is enabled in the app. Check the camera's volume settings.
- Instant Call button not working: Verify that the camera is connected to Wi-Fi and the app is running on your phone. Check app notification settings.
11. Official Product Video
Watch this video for an introduction to the ZOSI C518 camera and its features:
12. Support
For further assistance, technical support, or to explore more ZOSI products, please visit the official ZOSI store or contact customer service.
Visit the ZOSI Store on Amazon.

