KERUI D025 Wireless Window Door Magnet Sensor

1. Introduction

The KERUI D025 is a 433MHz wireless window and door magnet sensor designed to enhance the security of your home or business. When installed on a door or window, it detects unauthorized openings and sends a signal to your compatible KERUI alarm system, triggering an alert. This manual provides essential information for the proper installation, operation, and maintenance of your D025 sensor.

2. Package Contents

Please check the package for the following items:

• 1 x KERUI D025 Main Sensor Unit
• 1 x Magnet Unit
• Mounting accessories (e.g., double-sided adhesive tape, screws)
• (Battery not included - requires 1x CR2032 button cell battery)

3. Product Overview

The D025 sensor consists of two main parts: the main sensor unit and a smaller magnet unit. These two parts are installed adjacent to each other on a door or window frame. When the door or window is opened, the magnetic contact between the two parts is broken, triggering the sensor.

4. Setup

4.1 Battery Installation

1. Gently open the main sensor unit casing.
2. Insert one CR2032 button cell battery into the battery compartment, ensuring correct polarity (+/-).
3. Close the casing securely.

4.2 Mounting the Sensor

Choose a suitable location on your door or window frame where the main unit and magnet can be mounted parallel to each other, with a gap of no more than 10mm when the door/window is closed.

1. Clean the mounting surface thoroughly to ensure good adhesion.
2. Attach the main sensor unit to the fixed part of the door/window frame (e.g., door frame).
3. Attach the magnet unit to the moving part of the door/window (e.g., door) directly opposite the main unit.
4. Ensure the alignment marks on both units are facing each other and the gap is minimal when closed.
5. You can use the provided double-sided adhesive tape for easy installation or screws for a more permanent fixture.

4.3 Pairing with Your Alarm System

The KERUI D025 sensor operates on a 433MHz frequency. Refer to your KERUI alarm system's manual (e.g., W181, W184, W204) for specific instructions on how to add a new wireless sensor. Generally, the process involves:

1. Putting your alarm panel into 'learning' or 'pairing' mode.
2. Triggering the D025 sensor by separating the main unit and magnet.
3. The alarm panel should acknowledge the new sensor.
4. Assign the sensor to a specific zone (e.g., 'Front Door', 'Living Room Window').

Note: Some 433MHz alarm systems may require a signal duration of at least 3 seconds for proper pairing. If you experience pairing issues, consult your alarm system's manual or contact support.

5. Operating Instructions

Once successfully paired with your KERUI alarm system, the D025 sensor will function as follows:

1. Arming the System: When your alarm system is armed, the D025 sensor becomes active.
2. Detection: If the protected door or window is opened, the main sensor unit and magnet separate, breaking the magnetic contact.
3. Alarm Trigger: The D025 sensor immediately sends a wireless signal to your KERUI alarm panel.
4. Notification: The alarm panel will then sound an alarm, and depending on your system's configuration, may send SMS messages or make calls to preset phone numbers. You will receive a notification at the first sign of intrusion.

To disarm the system when entering, refer to the operating instructions of your main KERUI alarm system panel.

6. Maintenance

6.1 Battery Replacement

When the battery is low, your alarm system may indicate a low battery warning for the sensor. Replace the CR2032 battery promptly to ensure continuous protection. Follow the battery installation steps in Section 4.1.

6.2 Cleaning

Wipe the sensor units with a soft, dry cloth. Do not use liquid cleaners or abrasive materials, as these can damage the device.

6.3 Testing

Regularly test your sensor by arming your alarm system and then opening the protected door or window. Ensure the alarm triggers correctly and you receive any configured notifications.

7. Troubleshooting

• Sensor not triggering:
  • Check battery level and replace if necessary.
  • Ensure the main unit and magnet are properly aligned and within 10mm of each other when closed.
  • Verify the sensor is correctly paired with your alarm system.
• False alarms:
  • Check for loose mounting or vibrations that might cause the units to separate momentarily.
  • Ensure the gap between the units is not too wide when closed.
• Pairing issues:
  • Confirm your alarm system is in learning mode.
  • Ensure the sensor is within range of the alarm panel.
  • Some alarm systems require a 433MHz signal duration of at least 3 seconds for pairing. If your system has this requirement, this sensor might not be directly compatible without an RF bridge.

8. Specifications

Note: This device may contain frequency bands not operational in all regions. Only the frequency bands used in the European Union have been assessed for CE attestation.

9. User Tips

• Remote Monitoring: For complete security and remote control, ensure your main alarm system is connected to Wi-Fi or has data connectivity.
• Battery Life: The sensor is battery-powered. To maximize battery life and ensure continuous operation, consider using high-quality CR2032 batteries and replace them as soon as a low battery warning is indicated.
• Compatibility: While designed for KERUI systems, some users have successfully integrated 433MHz sensors with RF bridges (e.g., Ewelink) for broader smart home compatibility. However, verify signal duration requirements for your specific bridge/system.
• Placement: Ensure the sensor is placed in a location where the main unit and magnet are not easily dislodged or misaligned by normal use or environmental factors.

10. Frequently Asked Questions (FAQ)

Q: What can this item be used for?

A: This item is primarily used as a burglar detector for home security systems, specifically for monitoring windows and doors wirelessly.

Q: What type of battery does it use?

A: The KERUI D025 sensor uses one CR2032 button cell battery.

Q: Is it compatible with Tuya?

A: The D025 is designed for KERUI 433MHz alarm systems. Compatibility with other smart home platforms like Tuya may vary and typically requires an intermediate RF bridge that supports 433MHz devices.

Q: How do I turn off the alarm when I enter my home?

A: The D025 sensor sends a signal to your main alarm panel. To disarm the system and stop the alarm, you must use your main KERUI alarm system's controls (e.g., keypad, remote control, mobile app). Refer to your alarm panel's instruction manual for specific disarming procedures.

11. Warranty and Support

For warranty information and technical support, please refer to the documentation provided with your complete KERUI alarm system or contact the seller/manufacturer directly. A PDF document detailing the Attestation of Compliance for this product (LCSA070122179E) is available for regulatory information.