Multi Sensor Fire Detector MTD 533X

MTD 533X

MTD 533X multi sensor fire detector is designed for automatic fire detection in addressable fire alarm systems. It can operate as a smoke detector, heat detector or combined smoke and heat detector depending on application need. Also, it uses smoke evaluation based on the Tyndall principle and temperature evaluation through an NTC sensor. As a result, it supports early detection of smouldering and open fire conditions in suitable industrial and commercial areas.

  • Smoke and heat detection
  • Addressable loop support
  • Integrated isolator
  • 360° alarm LED visibility
  • EN 54 class support

Area risk review

Panel compatibility support

Detector placement guidance

Alarm system integration help

Installation backup

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  • Combined smoke and heat detection in one device
  • Can be used as smoke, heat or combined detector depending on configuration
  • Detects smouldering fires and open fires at an early stage
  • Smoke detection based on Tyndall principle
  • Heat detection using NTC sensor principle
  • Sensitivity adjustment through software within EN 54 scope
  • Optimized smoke chamber design
  • Smoke pre-alarm support at 30% and 75% of alarm threshold
  • Dynamic adaptation to surrounding conditions
  • Dynamic alarm filter to reduce deceptive alarm influence
  • 2-stage pollution detection
  • Adjustable temperature classes according to EN 54
  • All detector data and events are stored
  • 360° visible LED alarm indication
  • Integrated short-circuit isolator
  • Serial biphase data transmission
  • 2-wire loop technology
  • Designed for Integral X-LINE connection
  • Installation through detector base USB 501-x
  • VdS approval support as per datasheet
  • Industrial fire alarm systems
  • Control room fire detection
  • Electrical room smoke and heat monitoring
  • Office and administrative building protection
  • Warehouse and store area detection
  • Utility room fire safety
  • Panel room and equipment room monitoring
  • Commercial building fire detection
  • Addressable fire alarm system applications
  • Areas requiring combined smoke and heat sensing
  • Model: MTD 533X
  • Product Type: Multiple Sensor Detector / Combined Smoke and Heat Detector
  • Function: Combined smoke / heat detector using Tyndall smoke principle and/or NTC temperature sensor
  • Operating Voltage: 12 to 30 VDC without modulation amplitude
  • Quiescent Current: 120 µA typical
  • Alarm Output: 3 programmable levels — 0.1 mA / 1 mA / 5 mA
  • Alarm LED Active Current: 1.6 mA
  • Alarm Current: Minimum 0.5 mA, maximum 10 mA
  • Output Current: Programmable
  • Connection: Integral X-LINE, 5 V
  • Loop Technology: 6.3 V
  • Detector Base: USB 501-x
  • Signal Transmission: Serial biphase data transmission, 2-wire technology
  • Sensitivity: Smoke according to EN 54-7
  • Heat Classification: Heat according to EN 54-5, classes A1, A2 and B
  • Protection Class: IP44 with base USB 501-1
  • Ambient Temperature: -25°C to +60°C
  • Relative Humidity: Permanent, without condensation
  • Air Velocity: Up to maximum 20 m/s
  • Dimensions: As per datasheet drawing
  • Case Colour: White, similar to RAL 9003
  • Case Material: ABS / PC
  • Weight: 125 g
  • CE Certificate: 0786-CPD-20993
  • VdS Approval: G210115

    Comprehensive Services Using This Product

    From installation to ongoing support, we’re with you every step of the way.

    What Customers Say About Us

    Trusted Engineering Support

    The team provided clear technical guidance and practical solutions. Execution was smooth and well coordinated throughout.

    Mr. Vivek NairGeneral Manager – Operations, Cement Industry
    Dependable Technical Partner

    Their approach was systematic and aligned with our plant needs. Overall experience with product and service has been positive.

    Ms. Kavita RaoSenior Manager – Maintenance, Steel Sector
    Application-Focused Solutions

    They understood our process conditions before recommending equipment. Support during installation was handled professionally.

    Mr. Rohan MehtaProject Lead – Power Plant
    Consistent Service Delivery

    Product performance has been stable in regular operations. The support team responds in a timely manner.

    Mr. Anil DeshmukhInstrumentation Head, Process Manufacturing

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    Frequently Asked Questions

    MTD 533X is used for automatic fire detection in addressable fire alarm systems. It can detect smoke, heat or both, depending on configuration and application requirement.
    MTD 533X can be used as a smoke detector, heat detector or combined smoke and heat detector. The operating mode depends on system programming and site requirement.
    It uses smoke detection based on the Tyndall principle and heat detection through an NTC sensor.
    Yes. MTD 533X is designed for Integral X-LINE connection and serial 2-wire loop communication.
    Yes. It includes an integrated short-circuit isolator to help isolate a faulty loop section while maintaining operation of other devices.
    It can be used in suitable industrial and commercial locations such as control rooms, electrical rooms, offices, stores, utility areas and other fire-risk spaces. Final placement should follow fire alarm design guidelines.

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