1. Introduction
The PGST PG103 Wifi 4G Tuya Smart Home Security Alarm System is a comprehensive and intelligent security solution designed to protect your home or business. This system integrates Wi-Fi and 4G connectivity, allowing for remote monitoring and control via a mobile application. It supports a wide range of wireless sensors and is compatible with popular smart home platforms like Tuya, Amazon Alexa, and Google Assistant for enhanced automation and voice control.

2. Key Features
- Dual Network Connectivity: Supports both Wi-Fi and 4G networks for reliable communication and alerts.
- Tuya Smart Integration: Seamlessly integrates with the Tuya smart home platform for centralized control and automation.
- Voice Control: Compatible with Amazon Alexa and Google Assistant for convenient voice commands.
- Touch Screen Panel: Features a 2.4-inch color intelligent touch screen with a dustproof keyboard for easy operation.
- Extensive Zone Support: Supports up to 99 wireless defense zones, allowing for comprehensive coverage.
- Multiple Alert Methods: Provides alerts via alarm, SMS, GPRS, and mobile app notifications.
- 5 Preset Alarm Calls: Can dial up to 5 preset phone numbers in case of an alarm, ensuring no alert is missed.
- Multi-language Support: Offers menu display, voice prompts, and SMS settings in 9 languages (Chinese, English, German, Russian, Spanish, Polish, Italian, French, Portuguese).
- DIY Expandability: Supports various accessories including PIR motion sensors (including pet-immune), door/window sensors, smoke detectors, gas detectors, sirens, and IP cameras.
- Scheduled Arm/Disarm: Allows for regular scheduling of arming and disarming to save time and effort.
- SOS Function: Dedicated SOS button for emergency situations, alerting family members or contacts.
3. Package Contents
The PGST PG103 alarm system is available in various kits. Please refer to your specific kit for the exact contents. A typical kit may include:
- 1 x PGST PG103 Alarm Panel
- PIR Motion Sensor(s) (some kits include 15kg pet-immune sensors)
- Door/Window Sensor(s)
- Remote Control(s)
- RFID Tag(s)
- Wired Siren
- Optional: Smoke Detector, Outdoor Siren, IP Camera, Tuya peephole video doorbell camera (with 32GB card)
4. Specifications
| Feature | Specification |
|---|---|
| Brand Name | PGST |
| Model Number | PG103-4G-TUYA |
| Size | 185*125*14.7mm |
| Input Voltage | DC 5V |
| Working Current | Less than 120mA |
| Standby Current | Less than 80uA |
| Communication Interface | Wireless |
| Network | 4G (also supports Wi-Fi) |
| Zone Number | 99 wireless zones |
| Output Number | 5 alarm phones, SMS, APP alert |
| Alarm Type | The Alarm, SMS, GPRS, Apps Control |
| Arming Type | APP |
| Display | Yes (2.4-inch color intelligent touch screen) |
| Password Keyboard | Yes |
| Video Interface | No (Supports external IP Camera integration) |
| Wireless Frequency | 433Mhz |
| Coding Way | EV1527 |
| Backup Battery | 3.7V/500mAh Lithium battery |
| Smart Home Platform | Tuya |
| Voice Control | Support Alexa / Google Assistant |
| Certification | CE |
5. Setup Guide
5.1 Unboxing and Initial Inspection
Carefully unpack all components and verify against the package contents list for your specific kit. Inspect all items for any signs of damage. If any items are missing or damaged, contact customer support immediately.
5.2 Alarm Panel Installation
- Power Connection: Connect the DC 5V power adapter to the alarm panel and plug it into a power outlet. The panel has a built-in 3.7V/500mAh Lithium backup battery.
- SIM Card Installation (for 4G models): If your model supports 4G, insert a compatible SIM card into the designated slot on the alarm panel. Ensure the SIM card is active and has sufficient credit/data for SMS and calls.
- Mounting: Choose a central location in your home or business for the alarm panel, preferably near an entrance and within Wi-Fi range. Mount the panel securely to a wall using the provided hardware.
5.3 Connecting to Tuya Smart App
- Download App: Download the "Tuya Smart" or "Smart Life" app from your smartphone's app store (iOS or Android).
- Register/Login: Open the app and register a new account or log in with an existing one.
- Add Device: In the app, tap the "+" icon to add a new device. Select "Security & Video Surveillance" -> "Alarm (Wi-Fi)".
- Connect to Wi-Fi: Follow the on-screen instructions to connect the alarm panel to your Wi-Fi network. Ensure your phone is connected to a 2.4GHz Wi-Fi network during setup.
- Pairing: The app will guide you through the pairing process. The alarm panel will enter pairing mode automatically or by following specific instructions on its screen.
5.4 Adding Wireless Sensors and Accessories
The system supports up to 99 wireless zones. To add sensors:
- Enter Pairing Mode: On the alarm panel, navigate to the "Accessories" or "Sensor Management" menu and select "Add Sensor" or "Pairing Mode".
- Trigger Sensor: Activate the sensor you wish to add (e.g., separate the magnetic parts of a door sensor, trigger a PIR motion sensor by moving in front of it, press the button on a remote control). The panel will detect the sensor.
- Assign Zone: Assign the detected sensor to a specific zone and configure its type (e.g., normal, home, 24-hour, doorbell).
- Repeat: Repeat for all other wireless sensors and accessories.


5.5 Setting Up Alarm Phone Numbers
You can set up to 5 alarm phone numbers that the system will call sequentially when an alarm is triggered.
- On the alarm panel, go to "Settings" -> "Alarm Phone Numbers".
- Enter up to 5 contact numbers.
- Configure whether each number receives calls, SMS alerts, or both.
6. Operating Instructions
6.1 Arming and Disarming
- Arm (Away Mode): Activates all sensors. Use when leaving the premises. Can be done via the panel, remote control, or mobile app.
- Home Arm (Stay Mode): Activates perimeter sensors (e.g., door/window sensors) while allowing movement within the property (e.g., ignoring motion sensors). Can be done via the panel, remote control, or mobile app.
- Disarm: Deactivates the alarm system. Can be done via the panel (using password/RFID), remote control, or mobile app.
6.2 Mobile App Control
The Tuya Smart/Smart Life app provides full control over your alarm system from anywhere:
- Arm/Disarm the system.
- Receive real-time alarm notifications.
- View event history and logs.
- Manage sensors and accessories.
- Set up schedules for arming/disarming.
- Integrate with IP cameras for live view and recording.
6.3 Voice Control (Alexa/Google Assistant)
To enable voice control, link your Tuya Smart/Smart Life account with Amazon Alexa or Google Assistant through their respective apps. Once linked, you can use commands such as:
- "Alexa, arm my home."
- "Hey Google, disarm the alarm." (May require a PIN for disarming)
- "Alexa, what is the status of my alarm?"

6.4 SOS Function
In an emergency, press the SOS button on the alarm panel or a dedicated SOS remote. The system will immediately trigger an alarm and notify the preset emergency contacts via call and SMS.

7. Maintenance
- Battery Replacement: Regularly check the battery status of wireless sensors via the mobile app. Replace batteries promptly when indicated. Door sensors typically use common coin cell batteries (e.g., CR2032 or similar, check individual sensor specifications).
- Cleaning: Clean the alarm panel and sensors with a soft, dry cloth. Avoid using abrasive cleaners or solvents.
- Firmware Updates: Check the Tuya Smart/Smart Life app periodically for firmware updates for the alarm panel. Keep the system updated for optimal performance and security.
- Signal Strength: Ensure all sensors maintain good signal strength with the alarm panel. Relocate sensors or the panel if signal issues occur.
8. Troubleshooting
- System not connecting to Wi-Fi:
- Ensure your Wi-Fi network is 2.4GHz. The system does not support 5GHz Wi-Fi.
- Check Wi-Fi password accuracy.
- Move the alarm panel closer to the Wi-Fi router.
- 4G/SIM card not working:
- Verify the SIM card is correctly inserted and activated.
- Check if the SIM card has sufficient balance or data.
- Ensure 4G signal is available in the installation area.
- Sensors not pairing:
- Ensure the alarm panel is in pairing mode.
- Check sensor battery levels.
- Move sensors closer to the panel during pairing.
- False alarms:
- Check sensor placement; avoid direct sunlight or heat sources for PIR sensors.
- Ensure pet-immune sensors are correctly installed if you have pets (e.g., 15kg pet immune).
- Verify door/window sensors are properly aligned and securely attached.
- No alarm notifications on phone:
- Check app notification settings on your phone and within the Tuya Smart/Smart Life app.
- Ensure the alarm panel has internet connectivity (Wi-Fi or 4G).
- Verify alarm phone numbers are correctly set up.
9. User Tips
- SIM Card Usage: While the system supports 4G, it can also function with Wi-Fi only for app control and alerts. The SIM card is primarily for SMS and direct phone calls in case of alarm or if Wi-Fi is unavailable.
- Battery Life: To maximize battery life for wireless sensors, ensure they are placed in areas with good signal strength to avoid excessive power consumption from re-transmissions.
- Pet Immunity: If using pet-immune motion sensors, ensure they are installed at the recommended height and orientation to effectively ignore pets up to 15kg.
- Regular Testing: Periodically test your alarm system and all connected sensors to ensure they are functioning correctly.
10. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the seller's contact information or the official PGST website. Keep your purchase receipt as proof of purchase.
The product is CE certified, indicating compliance with European safety, health, and environmental protection requirements.





