MCT-43 – Wireless Door Sensor with Antenna

[Product Name]

Product Overview

The NAVKAR SYSTEMS MCT-43 Wireless Door/Window Magnetic Sensor is a 433MHz wireless security sensor designed to detect the opening of doors, windows, drawers and cabinets. When the magnetic contact separates, it sends a wireless signal to a compatible security alarm panel, helping provide timely intrusion detection. Its built-in antenna helps support reliable wireless communication, while the compact design and easy installation make it suitable for homes, offices, shops and other premises. The MCT-43 is an alarm-system accessory and cannot work as a standalone alarm.

Main Purpose

  • Detects unauthorized opening of doors and windows.
  • Sends a 433MHz wireless signal to a compatible GSM/wireless security alarm panel when the magnetic contact separates.
  • Helps protect entry points such as doors, windows, drawers and cabinets.

Key Benefits

  • Wireless Operation – No signal wiring required between the sensor and alarm panel.
  • Easy Installation – Simple peel-and-stick installation.
  • Built-in Antenna – Helps strengthen wireless signal transmission.
  • Low Power Consumption – Designed for battery-powered operation.
  • Low-Voltage Reminder – LED flashes continuously when battery voltage is low.
  • Reliable Entry Detection – Detects separation of the magnetic sensor and contact.

Important Features

  • Model: MCT-43
  • Frequency: 433MHz
  • Type: Wireless Magnetic Door/Window Sensor
  • Built-in Omnidirectional Antenna
  • Magnetic Opening Detection
  • Wireless Alarm Signal Transmission
  • Low-Voltage LED Indication
  • Easy Mounting
  • Compatible with GSM-based wireless security alarm systems
  • Not a Standalone Alarm – Requires a compatible alarm panel; it has no built-in siren.

Product Specifications

  • Model: MCT-43
  • Product Type: 433MHz Wireless Door/Window Magnetic Sensor
  • Brand: NAVKAR SYSTEMS
  • Power Supply: Battery Powered (exact battery specification not provided)
  • Communication: 433MHz Wireless RF
  • Operating Range: 
  • Material: Plastic housing
  • Dimensions: 7.5 x 5 x 1 cm
  • Other Specifications:
    • Built-in omnidirectional antenna
    • Magnetic contact detection
    • Low-voltage LED indication
    • Wireless signal transmission to compatible alarm panel
    • Indoor use
    • Easy peel-and-stick installation
    • Requires a compatible GSM/433MHz wireless security alarm system
    • Not suitable for standalone operation
    • No built-in alarm or siren

Applications

  • Home Security: Monitor main doors, back doors and windows for unauthorized opening.
  • Office & Shop Security: Protect office entrances, shop doors and other access points.
  • Alarm System Integration: Add wireless door/window opening detection to compatible 433MHz GSM-based security alarm systems.

Suitable For

  • Suitable application / customer type: Homes, apartments, offices, shops and other premises requiring door or window intrusion detection.
  • Suitable environment: Indoor residential and commercial environments where a compatible 433MHz GSM/wireless security alarm system is installed.
  • Suitable installation: Doors, windows and other opening points where the sensor and magnetic contact can be properly aligned and securely mounted.

Not Suitable For

  • Not suitable application: Standalone security operation without a compatible alarm panel.
  • Important limitation: The MCT-43 is only a sensor/accessory and has no built-in alarm or siren; it must communicate with a compatible GSM-based wireless security alarm system.
  • Environmental or technical limitation: It should be installed where the wireless signal can reliably reach the compatible alarm panel; actual wireless performance can be affected by walls, metal structures and other obstructions.

Package Contents

  • 1 × NAVKAR SYSTEMS MCT-43 Wireless Door/Window Magnetic Sensor
  • 1 × Magnetic Contact / Magnet
  • Mounting Accessories / Adhesive Tape

Note: The MCT-43 is a sensor accessory and requires a compatible GSM/433MHz wireless security alarm system.

Installation

  1. Select the Installation Point – Choose the door, window or other opening that needs protection. The MCT-43 is intended for indoor use and should be installed where the sensor can communicate with the compatible wireless alarm panel.
  2. Position the Sensor and Magnet – Mount the main wireless sensor on the fixed frame and place the magnetic strip on the moving door/window so that both parts are properly aligned when closed.
  3. Secure the Components – Fix the sensor and magnetic strip using the supplied adhesive or suitable mounting method. The product is designed for easy installation.
  4. Test the Opening Detection – Open and close the protected door/window and confirm that the MCT-43 sends the appropriate wireless signal to the paired security alarm panel.

Wiring

The MCT-43 does not require external signal wiring because it communicates wirelessly with the compatible security alarm panel.

  • Power: Battery powered; insert the battery according to the correct polarity.
  • Input: Magnetic contact/opening detection.
  • Output: 433MHz wireless RF signal to the compatible security alarm panel.
  • Other Connections: No external wired connection is required between the sensor and alarm panel.

Programming

  1. Prepare the Alarm Panel – Put the compatible 433MHz wireless security alarm panel into its sensor-learning/pairing mode.
  2. Trigger the MCT-43 – With the sensor powered, operate the magnetic contact by separating the sensor and magnet to transmit its wireless signal.
  3. Confirm Pairing – Check that the alarm panel recognizes and stores the MCT-43 as a door/window sensor, then test it by opening the protected door or window.

Important: The exact programming/menu procedure depends on the GSM/wireless alarm panel being used.

Operation

  1. Normal Monitoring: Keep the door/window closed with the MCT-43 sensor and magnetic contact properly aligned. The sensor remains ready to detect opening.
  2. Door/Window Opening: When the protected door or window is opened, the magnetic contact separates from the sensor. The MCT-43 detects this change and transmits a 433MHz wireless signal to the compatible security alarm panel. 
  3. Alarm Response: The compatible alarm panel receives the wireless signal and activates its programmed alarm or notification response. The MCT-43 itself does not have a built-in siren and cannot operate as a standalone alarm. 

Troubleshooting

  • Problem: Sensor does not trigger when the door/window is opened.
    Solution: Check that the sensor and magnetic contact are correctly aligned when closed and separate properly when the door/window opens.
  • Problem: Alarm panel does not detect the MCT-43.
    Solution: Confirm that the alarm panel supports 433MHz wireless sensors and that the MCT-43 has been correctly paired/registered with the panel. 
  • Problem: Sensor signal is weak or unreliable.
    Solution: Check the distance between the MCT-43 and alarm panel and reduce obstructions such as walls, metal structures or other objects that may interfere with the wireless signal.

Common Problems

  • Incorrect Sensor Alignment – Reposition the sensor and magnetic contact so they are properly aligned when the door/window is closed.
  • Sensor Not Paired with Alarm Panel – Register the MCT-43 through the compatible wireless alarm panel before use.
  • Low Battery – If the sensor's low-voltage indicator remains flashing, replace the battery with the correct type. The MCT-43 includes a low-voltage reminder function

FAQs

Q: Can the MCT-43 work as a standalone alarm?
A: No. The MCT-43 is only a wireless sensor and does not have a built-in alarm or siren. It requires a compatible GSM-based wireless security alarm system. 

Q: What frequency does the MCT-43 use?
A: The MCT-43 is designed for 433MHz wireless communication with a compatible alarm system. 

Q: What happens when the protected door or window is opened?
A: When the magnetic contact separates from the sensor, the MCT-43 detects the opening and transmits a wireless signal to the connected alarm system.

Q: Does the MCT-43 require wiring?
A: No. It is a wireless, battery-powered sensor and does not require external signal wiring.

Q: How do I know when the battery is low?
A: The sensor has a low-voltage reminder function. When the battery voltage becomes low, its indicator light flashes continuously to remind you to replace the battery.

Spare Parts

  • Replacement Battery – Use the correct battery type specified for the MCT-43.
  • Magnetic Contact / Magnet – Replacement magnetic contact for door/window detection.
  • Double-Sided Adhesive / Mounting Tape – Replacement mounting material for securing the sensor and magnetic contact.

Warranty

Not Applicable

Videos

  • [Installation Video]
  • [Programming Video]
  • [Product Demonstration Video]

Manuals

  • [User Manual]
  • [Installation Manual]

Downloads

  • [Datasheet]: NA
  • [Wiring Diagram]: Not Applicable
  • [Catalogue / Brochure]: NA
  • [Other Download]: NA

Customer Questions

Q: Can the MCT-43 work as a standalone alarm?
A: No. The MCT-43 is only a wireless sensor and does not have a built-in alarm or siren. It must be used with a compatible GSM-based wireless security alarm system.

Q: What frequency does the MCT-43 use?
A: The MCT-43 uses 433MHz wireless RF communication for connection with a compatible alarm system. 

Q: What happens when the door or window is opened?
A: When the magnetic contact separates from the sensor, the MCT-43 detects the opening and sends a wireless signal to the connected alarm panel.

Q: Does the MCT-43 require external wiring?
A: No. It is a wireless sensor, so no external signal wiring is required between the sensor and alarm panel.

Q: How is the MCT-43 installed?
A: It is designed for easy installation using a peel-and-stick mounting method. The sensor and magnetic contact should be positioned correctly on the fixed and moving parts of the door or window. 

Q: How do I know if the sensor battery is low?
A: The MCT-43 has a low-voltage reminder function. When the battery voltage becomes low, the indicator light flashes continuously to remind the user to replace the battery. 

Q: Can I use the MCT-43 with any alarm system?
A: It should be used with a compatible 433MHz/GSM wireless security alarm system. Compatibility should be confirmed before connecting it to another alarm panel.

Escalation to Support

If the issue cannot be resolved using the information above, Please contact Navkar Systems at Whatsapp Support number: 91384 68548 with the following information:

  • Product Model:
  • Purchase Date:
  • Problem Description:
  • Installation Details:
  • Photos / Videos:
  • Previous Troubleshooting Performed: