Introduction
Welcome to your new CAMSTRO M140 Video Doorbell Camera. This manual provides comprehensive instructions for the installation, operation, and maintenance of your device. Please read this manual thoroughly before use to ensure proper functionality and safety.
Package Contents
Please verify that all items are present in your package:
- Video Doorbell Body
- Mounting bracket (typically included, check packaging)
- Mounting screws and anchors (typically included, check packaging)
- USB charging cable (typically included, check packaging)
- User manual (this document)
Specifications
| Brand | CAMSTRO |
| Model Name | M140 |
| Mounting Type | Doorbell Mount |
| Video Capture Resolution | 1920p |
| Colour | Black |
| Item Dimensions L x W x H | 10 x 5 x 3 Centimeters |
| Video Capture Format | MPEG-4 |
| Item Weight | 440 g |
| Recommended Uses For Product | Outdoor Security |
| Connectivity Technology | Wireless |
| Special Feature | 2 Way Audio, Night Vision, Weather Proof |
| Indoor/Outdoor Usage | Outdoor |
| Compatible Devices | Smartphone |
| Power Source | Battery Powered |
| Connectivity Protocol | Wi-Fi |
| Controller Type | Amazon Alexa |
Setup Guide
1. Unboxing and Initial Check
- Carefully remove all components from the packaging.
- Inspect the doorbell and accessories for any signs of damage.
2. Charging the Device
- Before installation, fully charge the doorbell using the provided USB cable.
- The charging indicator light will change once charging is complete.
3. App Installation and Account Creation
- Download the companion app from your smartphone's app store (e.g., Google Play Store or Apple App Store).
- Follow the on-screen instructions to create an account and add your CAMSTRO M140 doorbell.
- Ensure your smartphone is connected to a 2.4GHz Wi-Fi network during setup.
4. Mounting the Doorbell
- Choose an optimal mounting location, typically at eye level, ensuring a clear view of your entrance.
- Use the mounting bracket as a template to mark drill holes.
- Drill holes, insert anchors (if necessary), and secure the mounting bracket with screws.
- Attach the doorbell body to the mounting bracket.
Operating Instructions
1. Live View Access
- Open the companion app on your smartphone.
- Select your CAMSTRO M140 doorbell from the device list to view the live feed.
2. Two-Way Audio Communication
- While in live view or when receiving a call, tap the microphone icon in the app to speak to visitors.
- Tap the icon again to mute your microphone.
3. Motion Detection Alerts
- The doorbell will automatically detect motion and send notifications to your smartphone.
- Adjust motion sensitivity and detection zones within the app settings to optimize alerts.
4. Video Recording and Playback
- Recordings are triggered by motion or doorbell presses.
- Access recorded videos through the app's history or cloud storage section.
Key Features
3K Ultra Clarity

The CAMSTRO M140 provides 3K Ultra Clarity, ensuring clear visibility of visitors at your front door with 5MP resolution. This high-definition view allows for detailed recognition of individuals and objects.
Enhanced Two-Way Audio

Engage in clear conversations with visitors using the enhanced two-way audio feature, allowing you to listen and speak directly through the doorbell from your smartphone, even when you are not home.
Smart AI Human Detection

Benefit from Smart AI Human Detection, which quickly captures human motion and sends real-time alerts to your device. This intelligent detection minimizes false alarms caused by pets or inanimate objects.
Included Chime

The CAMSTRO M140 comes with a chime, ensuring you never miss a visitor's ring, regardless of your location within your home. The chime can be placed in various rooms for convenience.
Customizable Detection Zones

Customize detection zones to focus on specific areas of interest, such as your porch or walkway. This feature helps reduce unwanted alerts and notifications from irrelevant movements outside the designated zones.
Flexible Video Storage

Store your video recordings flexibly with options for secure cloud storage (subscription may be required) and local storage via an SD card, supporting up to 128GB. This ensures your footage is always accessible.
Smart Device Compatibility

Integrate your CAMSTRO M140 with popular smart devices. It works seamlessly with Amazon Alexa and Hey Google, allowing voice commands such as 'Alexa, show me the front door' for convenient monitoring.
Maintenance
1. Cleaning the Lens
- Regularly clean the camera lens with a soft, dry cloth to ensure clear video quality.
- Avoid using abrasive cleaners or solvents.
2. Battery Management
- Monitor the battery level through the app and recharge the doorbell as needed.
- For optimal battery life, avoid extreme temperatures.
3. Firmware Updates
- Check the app periodically for available firmware updates.
- Install updates to ensure your doorbell has the latest features and security enhancements.
Troubleshooting
1. No Power/Device Not Turning On
- Ensure the battery is fully charged.
- Verify the charging cable and adapter are functioning correctly.
2. Wi-Fi Connection Issues
- Confirm your Wi-Fi network is 2.4GHz.
- Check the Wi-Fi signal strength at the doorbell's location.
- Restart your router and the doorbell.
- Ensure the Wi-Fi password entered in the app is correct.
3. Poor Video Quality
- Clean the camera lens.
- Check your Wi-Fi connection speed and stability.
- Ensure there are no obstructions in front of the camera.
4. Motion Detection Not Working
- Verify motion detection is enabled in the app settings.
- Adjust motion sensitivity and detection zones.
- Ensure the doorbell's view is not obstructed.
5. Two-Way Audio Problems
- Check your smartphone's volume and microphone permissions for the app.
- Ensure there is no interference near the doorbell's microphone or speaker.
- Verify a stable internet connection.
Warranty and Support
For detailed warranty information, product registration, and technical support, please visit the official CAMSTRO website or contact their customer service department. Keep your purchase receipt for warranty claims.




