The H502 GSM WiFi Alarm System 4.3 inch touch LCD with 4 PIR motion sensors is a complete smart security system for a home, office, garage, shop or small business. It combines GSM, WiFi, app control and wireless sensors, helping you keep important areas protected and react quickly when something happens.

Phone Call, SMS and App Notifications

When an alarm event is detected, the system can inform you through several notification channels, including phone calls, SMS messages and mobile app alerts. This increases the chance that important information reaches you quickly, even when you are not near the control panel.

Remote Control with GSM, WiFi and Tuya Smart

The alarm can be controlled remotely from a smartphone, allowing you to arm, disarm and check the current security status. GSM and WiFi connectivity make the system more flexible for everyday use and help you keep supervision over the property from almost anywhere.

Clear 4.3 inch touch LCD for Daily Operation

The central panel uses a clear 4.3 inch touch LCD, designed to make configuration and daily operation easier. You can manage sensors, alarm modes, remotes, schedules and selected settings without complicated procedures.

Set with 4 PIR Motion Sensors

This version includes 4 PIR motion sensors, so you can protect selected rooms, corridors or office zones. Motion sensors help detect movement in protected areas and trigger the alarm according to the chosen configuration.

Door and Window Protection

Opening sensors help secure doors and windows. When the protected entrance is opened while the system is armed, the alarm can react immediately and notify you about the event.

Automatic Arming and Disarming Schedules

You can set schedules for automatic arming and disarming, which is useful for routine protection during work hours, night hours or times when the property is usually empty.

Backup Power and Loud Siren

The backup battery helps maintain basic protection during a short power interruption. The included siren provides a strong sound warning, supporting faster reaction and helping discourage unauthorized access.

Expandable Security Configuration

The system can be expanded with compatible wireless sensors, remote controls, RFID accessories and sirens. This allows you to build a setup adapted to the size and layout of your property.

Technical Specifications

Alarm Panel / Control Unit:

• • Model: H502
• • Display: 4.3 inch touch LCD
• • GSM and WiFi communication
• • Wireless operating frequency: 433MHz
• • Mobile app support: Tuya Smart
• • Remote arming and disarming
• • Support for compatible PIR sensors and opening sensors
• • Support for remote controls and selected RFID accessories
• • Backup battery for short power interruptions
• • Designed for home, office and small business security

PIR Motion Sensors:

• • Quantity in this set: 4
• • Wireless motion detection
• • Recommended for rooms, corridors and selected zones
• • Battery powered operation
• • Designed for indoor use with compatible alarm panels

Door / Window Sensors and Accessories:

• • Wireless opening sensors for entrances and windows
• • Remote controls for convenient daily operation
• • Siren for clear audible warning
• • Power adapter and accessories included according to the set version

Practical Protection for Larger Setups

The H502 platform is a good choice when you want a more complete system with a modern touch panel and several wireless accessories from the start. It can protect multiple rooms and can be further expanded when your needs grow.

Convenient Control for Family or Staff

Remote controls, RFID accessories and app operation make the system convenient for different users. This helps family members or employees arm and disarm the system without complicated instructions.

Smart Home Compatibility

Tuya Smart support allows the alarm to become part of a wider smart home environment. Depending on your configuration, you can combine the alarm with other compatible devices and create a more convenient security routine.

Reliable Everyday Security

The set is designed for daily use in places where quick notification and simple operation are important. It helps protect entrances, rooms, garages and office areas while giving you remote access to the most important functions.

Why Choose This Set

This H502 version with 4 PIR motion sensors is a balanced choice for customers who want a ready security kit rather than a single accessory. It combines a touch control panel, wireless detectors, remote operation and a loud warning signal in one practical package.

Installation and Use Tips

Place the central panel in an accessible indoor location, install PIR sensors in areas with natural movement paths and position opening sensors on important doors or windows. After installation, test each sensor and notification channel to confirm that the system works as expected.

Good Fit for Everyday Security

The H502 GSM WiFi Alarm System 4.3 Inch Touch LCD + 4xPIR is suitable for everyday security tasks where convenience, discreet design and practical functions matter. It helps you keep important places under control and gives you more confidence when you are away.

Useful in Many Situations

Use it to supervise an entrance, room, garage, workplace, storage area or selected equipment. The device can support temporary monitoring, routine safety checks and everyday observation depending on the place of installation.

Balanced Design and Functionality

The design focuses on a balance between simple use and useful features. This makes the product a practical option for customers who want an effective solution without choosing a complicated professional installation.

Prepared for Long-Term Use

The product can be used as part of a wider security setup or as a standalone accessory, depending on your needs. Correct installation, stable power and proper configuration help achieve the best everyday performance.