Johnson Controls KM-M302MJ Interface Module

General Description

The KM-M302MJ is part of Johnson Controls' intelligent monitoring solutions, designed to enhance fire safety in various environments. This interface module allows for seamless integration with existing fire alarm systems, enabling real-time monitoring and reporting of smoke detector status. Its robust design ensures reliability in critical situations, making it essential for adequate fire protection.

Technical Specifications of Johnson Controls KM-M302MJ

l Model: KM-M302MJ

l Nominal Operating Voltage: 15 to 32 VDC

l Maximum Current Draw: 5.1 mA (LED on)

l Average Operating Current: 300 µA (1 communication every 5 seconds)

l End-of-Line Resistor (EOL): 3.9 kΩ

l Maximum IDC Wiring Resistance: 25 Ω

l Temperature Range: 32°F to 120°F (0°C to 49°C)

l Humidity Range: 10% to 93% non-condensing

l Dimensions: 4.5" (11.43 cm) high x 4" (10.16 cm) wide x 1.25" (3.175 cm) deep

l Mounting Requirements: Compatible with a standard 4" square electrical box

Detailed Features

l Dual Circuit Support: The KM-M302MJ can monitor both Style B and Style D circuits, allowing for flexible installation options based on system requirements.

l LED Status Indicator: An integrated LED provides visual feedback on the module's operational status, indicating regular operation or alarm conditions.

l Intelligent Communication: The module communicates with the control panel, reporting the status of connected smoke detectors, which enhances system reliability.

l Easy Installation Process: Designed for straightforward installation, the module has comprehensive wiring instructions to facilitate setup.

Applications of Johnson Controls KM-M302MJ

The KM-M302MJ Interface Module is suitable for a variety of applications:

A. Commercial Buildings: Provides essential fire detection capabilities in offices, retail spaces, and public areas.

B. Industrial Facilities: Monitors smoke detectors in warehouses and manufacturing plants with fire hazards.

C. Educational Institutions: Ensures safety in schools and universities by effectively supervising smoke detection systems.

D. Healthcare Facilities: Protects sensitive areas such as patient care units and laboratories through reliable fire monitoring.

Installation

l Preparation:

Gather necessary tools, including screwdrivers, wire strippers, and mounting hardware.

Review the installation manual thoroughly to understand wiring diagrams and specifications.

l Mounting:

Securely mount the KM-M302MJ module within a standard 4" square electrical box.

Ensure that the module is positioned for easy access during maintenance.

l Wiring:

Connect the power supply to the designated terminals on the module.

Wire the two-wire smoke detectors according to either Style B or Style D configurations per your system's requirements.

l Testing:

After installation, conduct a functional test by simulating alarm conditions to ensure the module responds correctly.

Verify that the LED indicator reflects the appropriate status during testing.

l Final Checks:

Confirm that all connections are secure and that the module is mounted correctly.

Perform regular maintenance checks as per manufacturer recommendations to ensure ongoing reliability.

Related Part Numbers of Johnson Controls KM-M302MJ

l KM-M300MJ

l KM-M301MJ

l KM-M300DJ

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