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Visitor II
July 31, 2025
Question

Will IIS2MDCTR magnetic sensor affect the MRI Machine in MRI Room

  • July 31, 2025
  • 2 replies
  • 209 views

Hello All,

We are adding the IIS2MDCTR magnetic sensor in our existing product.

The concern we share is that this is a magnetic sensor and will it affect the MRI machine or its results when installed in the MRI Room.

Our product is an Emergency Exit Light a manadatory product but as of now without the magnetic sensor.

 

Please share your feedback.

 

2 replies

Andrew Neil
Super User
July 31, 2025

Why does an Emergency Exit Light need a  magnetic sensor?

A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.
Visitor II
June 29, 2026

I don't think the sensor itself would interfere with the MRI. However, I'd recommend checking the complete device for MRI compatibility and testing it before installation.

Associate III
June 30, 2026

An emergency exit light requires a magnetic sensor (often a reed switch) to allow for mandated, code-compliant testing without physical contact or breaching the fixture's housing. This touchless design provides several essential benefits for building safety and maintenance: [1, 2, 3]

  • Hygienic and Wash-Down Capabilities: In environments like food-processing plants, commercial kitchens, or cleanrooms, fixtures must be sealed to handle frequent wash-downs. A magnetic sensor lets staff test the lights without dirtying or damaging a mechanical push-button. [1, 2]
  • Vandal-Resistance: For high-abuse areas like schools, prisons, or parking garages, the lights are tightly sealed with tamper-proof screws. A magnetic switch allows building managers to test the internal battery and bulbs from the outside without prying open the housing. [1, 2]
  • Compliance with Mandated Fire Codes: NFPA 101 Life Safety Code requires exit signs and emergency lights to be tested monthly (30 seconds) and annually (90 minutes). By holding a magnet near the designated spot on the sign, a maintenance worker can safely force the unit into emergency discharge mode to verify functionality. [1, 2, 3]
  • Weather and Moisture Sealing: For exterior or wet-location exit signs, any moving parts or buttons increase the risk of water damage. A completely sealed magnetic sensor removes the need for holes or push-buttons, allowing the fixture to maintain NEMA 4X or IP66 waterproof ratings. [1, 2]