KERUI G12 WIFI GSM Alarm Host User Manual

1. Introduction

The KERUI G12 WIFI GSM Alarm Host is a smart security system designed to protect your home or office. This dual-network system utilizes both Wi-Fi and cellular (GSM/4G) connectivity to ensure reliable communication. It supports a wide range of wireless sensors and can be controlled via a dedicated mobile application, remote tags, or RFID cards. The system provides real-time alerts through app push notifications, SMS, and phone calls.

Figure 1: KERUI G12 Alarm Host protecting a home.

2. Safety Information

• Ensure the device is installed in a dry environment, away from water or excessive humidity.
• Use only the provided power adapter to prevent damage.
• Do not attempt to disassemble or repair the device yourself. Refer to qualified personnel for service.
• Keep the device out of reach of children.
• Avoid placing the device near strong magnetic fields or sources of interference.

3. Package Contents

Verify that all items are present in your package:

• Smart Hub (Panel)
• PIR Motion Detector (x1)
• Remote Tag (x2)
• RFID Tags (x2)
• Door/Window Sensor (x1 or x2, optional)
• Wireless Siren (Optional)
• Power Adapter
• Hub Bracket
• Bottom Cover
• Screws (x2)
• Extra Adhesive Mounting Strips
• PIR Motion Detector Bracket

Figure 2: Overview of KERUI G12 Alarm System components.

4. Product Overview

The KERUI G12 system features a central Smart Hub that acts as the brain of your security setup, communicating with various sensors and providing alerts.

4.1 Smart Hub (Panel)

The Smart Hub is an alarm, display, and keypad unit. It features a 1.8-inch TFT color display and a touch keyboard.

• Display Window: Shows system status, time, alarm information, and menus.
• Keypad: Used for ARM, ARM STAY, DISARM, and DIAL functions, as well as entering passcodes and settings.
• RFID Tag Reader Zone: Tap an RFID tag here to quickly arm or disarm the system.
• Status Indicator: Indicates the ARM/DISARM/ARM STAY/ALARM status.
• Tamper Switch: Located underneath the bracket, it triggers an alarm if the hub is removed from its installed location.
• Speaker: Provides voice prompts and alarm sounds.
• Regular SIM Card Slot: For inserting a micro SIM card to enable cellular services.
• Backup Battery ON/OFF: Switch to activate the built-in backup battery.
• Power Port (Micro USB): For connecting the power cable.

Figure 3: Smart Hub (Panel) components.

4.2 Sensors and Accessories

• PIR Motion Detector: Senses movement in a room.
• Remote Tag: A wireless key fob for quick arming, disarming, and triggering emergency alarms.
• RFID Tag: A key fob that allows arming/disarming without entering a password.
• Door/Window Sensor: Detects when a door or window is opened.
• Wireless Siren: An optional accessory that sounds when the alarm goes off.

Figure 4: Remote Control overview.

Figure 5: RFID Tag overview.

4.3 Key Features

• Tuya APP Remote Control: Link to all graffiti solutions for smart home products, compatible with Google Home, IFTTT, and Alexa.
• Multi-language Support: Supports 11 languages including English, German, Russian, Spanish, Polish, Italian, French, Portuguese, Greek, Romanian, and Chinese.
• On-site Alarm: Built-in 85dB siren for immediate deterrence.
• Remote Notification: Receive alerts via call, SMS, and app push notifications.
• Scheduled Arm/Disarm: Program specific times for the system to arm or disarm automatically.
• Low Voltage Alarm: Notifies you when wireless sensor batteries are low.
• Tamper Alarm: Alerts if the hub or sensors are tampered with.
• User Password Protection: The keyboard will reject input for 90 seconds after 5 consecutive incorrect password attempts.

Figure 6: Key features at a glance.

5. Setup

5.1 Initial Setup

5.1.1 SIM Card Installation

1. Ensure the Smart Hub is powered off.
2. Insert a micro SIM card (supporting 2G/GSM or 4G network) into the SIM card slot on the back of the hub.
3. Make sure the SIM card's security code is permanently deactivated.
4. If using a 4G SIM card, confirm that your wireless service provider still supports 2G network in your country, as the hub relies on 2G for cellular communication.

5.1.2 Wi-Fi Connection (for Cellular + Wi-Fi model only)

The hub supports 2.4GHz Wi-Fi networks only. It does not support 5GHz Wi-Fi.

1. Ensure your Wi-Fi router is configured for a 2.4GHz network. If you have a dual-band router with the same name for both 2.4GHz and 5GHz, separate them into distinct names in your router settings.
2. Your Wi-Fi password must not contain spaces or special characters.
3. Disable the AP isolation setting in your router.
4. Place the hub as close as possible to your router for optimal signal strength.
5. For best performance, ensure your network has an upload speed of at least 2Mbps.

5.1.3 App Download and Device Pairing

1. Download the "Smart Security System" app by scanning the QR code provided in the product packaging or searching for it in your phone's app store.
2. Register an account and log in.
3. Turn on Bluetooth on your phone in advance.
4. On the Smart Hub, navigate to Main Menu > WIFI > Smart Link Confirm.
5. In the Tuya app, tap the "+" button on the home page, then select "Add Device" (automatic device discovery).
6. Connect to your 2.4GHz Wi-Fi network and enter the password.
7. The app will automatically discover and add the "Multifunction alarm".

Video 1: Demonstrates the Tuya app connection process and sensor testing.

6. Pairing Sensors and Accessories

The system can connect with up to 100 wireless sensors, 10 remote tags, and 10 RFID tags.

6.1 General Pairing Process

1. On the Smart Hub, navigate to Main Menu > Parts > [Remote/RFID/Detector] > Add.
2. Enter a unique digit (0-9) to designate a number for the device.
3. The hub will display "Synchronizing" and a countdown.
4. Trigger the sensor/remote (e.g., press a button, tap RFID, activate PIR/door sensor).
5. The hub will confirm with "Learning OK" and "Device code has been learned".

6.2 Specific Device Pairing

• Remote Control: Press any button on the remote control.
• RFID Card: Tap the RFID card on the RFID zone of the panel.
• PIR Motion Detector: Activate the PIR motion detector by waving your hand in front of it.
• Door/Window Sensor: Separate the magnet from the sensor.
• Wireless Siren: Press and hold the SET button on the siren until you hear two beeps, then press the '√' button on the hub panel within 6 seconds.
• Alarm Wireless Switch: Press and hold the button on the switch until it lights up, then tap the appropriate direction button (◄/▲ or ▼/) on the hub to send ON/OFF signals.

Figure 7: The system can learn up to 100 wireless detectors and sensors.

7. Installation Guidelines

7.1 Smart Hub Placement

• Place the hub close to where you frequently enter and exit for easy access.
• Ensure the chosen location has good Wi-Fi and cellular signal strength.
• Plug the hub into an unswitched wall outlet to prevent accidental power loss.

7.2 Door/Window Sensor Installation

• Mount the sensor and its magnet so they are aligned in the middle.
• When the door or window is closed, the gap between the sensor and magnet should be no more than 0.6 inches (1.5cm).

7.3 PIR Motion Detector Installation

• Mount the detector on an interior wall at a height of 79 to 87 inches (2 to 2.2m) above the floor.
• Avoid installing outdoors, in garages, or in areas where motion can be detected through glass.
• Do not install in wet areas or near heat sources (e.g., electric heaters, vents, fireplaces) that can cause turbulent air.
• Ensure no large appliances or furniture obstruct the detector's motion sensors.

8. Operation

8.1 Security Levels

• Away Arm: All sensors in your home are monitored. Ideal when no one is home.
• Home Arm: Normal and Delay sensors are monitored, but interior sensors are not. Useful when you are home but want perimeter security.
• Disarmed: No sensors are monitored, except for 24-hour sensors.

8.2 Arming and Disarming the System

You can arm or disarm your system using one of the following methods:

• RFID Tag: Tap the RFID tag on the panel's RFID zone.
• Remote Tag: Press the Away Arm, Home Arm, Disarm, or SOS button on the remote.
• Panel: Enter your passcode on the keypad and press the Arm/Stay Arm/Disarm icons.
• APP: Use the dedicated mobile application to tap the Away Arm, Home Arm, or Disarm icons.

8.3 Exit/Entry Delay

Exit and Entry Delays are countdowns that allow you to leave or enter your home without triggering an immediate alarm. The default Exit Delay is 40 seconds, and the Entry Delay is 30 seconds. You can adjust these times via Menu > Settings > Delay > Exit Delay/Entry Delay.

8.4 Making Calls

On the home screen, tap the phone icon, enter the desired number, and press '√' to dial. The call will be canceled if the cellular network is not registered, the system is armed, or in voice alarming mode.

8.5 Scheduled Settings

You can set daily arm and disarm schedules via Menu > Timer > Arm Timer/Disarm Timer. This allows the system to automatically arm or disarm at specified times.

Figure 8: Remote notifications and scheduled arm/disarm.

8.6 Voice Message Recording

The system allows you to record, play, and delete a brief voice message (1-20 seconds) via Menu > Record. This message can be played back to the remote when an alarm call is connected.

9. Maintenance

9.1 Battery Backup

The Smart Hub includes a built-in backup battery (3.7V, 500mAh) that provides power for more than 6 hours in case of an electrical outage. The battery icon in the upper-right corner of the display shows the battery level. When the backup battery is low, the icon turns red, and low battery notifications are sent to registered phone numbers. A full charge takes 8 to 12 hours.

9.2 Sensor Battery Replacement

When a wireless sensor's battery is low, its LED indicator will blink. Replace the battery promptly to ensure continuous protection.

9.3 Tamper Detection

The Smart Hub and some sensors are equipped with tamper switches. If the hub is removed from its back plate or a sensor is tampered with, an alert notification will be sent to you.

Figure 9: Maintenance features: low voltage, tamper, battery, RFID.

10. Troubleshooting

• No Cellular Network Connection: Ensure the SIM card is correctly inserted, activated, and its security code is deactivated. Verify 2G network availability in your area if using a 4G SIM.
• Wi-Fi Connection Issues: Double-check that you are connecting to a 2.4GHz network and that your Wi-Fi password is correct (no spaces or special characters). Ensure AP isolation is disabled on your router.
• Keypad Locked: If an incorrect password is entered 5 times consecutively, the keyboard will lock for 90 seconds as a security measure.
• False Alarms: Adjust the Exit/Entry Delay times in the settings to allow sufficient time for leaving or entering the premises.
• Sensors Not Triggering: Ensure sensors are correctly paired and their batteries are not low. Check installation guidelines for optimal placement.
• Reset to Factory Settings: If persistent issues occur, you can reset the hub via Menu > Settings > Initialization or by pressing the TAMPER switch 5 times. Note that this will delete all paired accessories and event logs.

11. Specifications

12. User Tips

• Network Compatibility: The G12 system supports both 2G and 4G cellular networks, depending on the model purchased. For Wi-Fi, ensure you connect to a 2.4GHz network, as 5GHz is not supported.
• Wi-Fi Setup: If you have a dual-band router, it's crucial to separate the 2.4GHz and 5GHz bands with different names in your router settings to ensure proper connection.
• Optimal Placement: For reliable Wi-Fi performance, place the Smart Hub as close as possible to your router.
• Password Security: Be mindful of the user password protection feature; the keyboard will lock for 90 seconds after 5 incorrect password attempts.
• App Notifications: Ensure the app has permission to receive notifications on your phone to get timely alerts.

13. Warranty and Support

For any issues not covered in this manual or for warranty claims, please contact KERUI customer support. Keep your purchase receipt as proof of purchase.

For further assistance, refer to the official seller's website or contact their support channels.