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Door Sensor for Fire, Safety & Emergency Exit

Introduction

Standex Electronics’s engineers have developed a reliable way to detect the status of an emergency door.  Normally reed sensors require a reed sensor and a magnet to carry out the sensing function.  However, almost all emergency doors must be made of steel or a steel alloy.  This steel interferes with the magnetic field shunting it from the reed sensor, thereby eliminating its usage in these applications.  Therefore, designers only had mechanical switches at their disposal to detect the status of any emergency door.  They have been used successfully, however; they can fail prematurely or may have limited life cycles.  Designers now have a much better and more reliable alternative with Standex Electronics’s one component reed sensor that uses the influence of the steel door to activate the sensor…

Full Application Write Up
Door Sensor for Fire, Safety and Emergency Exit Doors

Features

  • Alternative to the inductive sensor
  • Dynamically tested contacts
  • Hermetically sealed to operate in dirty environments
  • Mechanically stable enclosure
  • Reliable switching for millions of operations
  • Requires no external power to operate
  • Single component door sensor
  • Screw fastening or PCB through hole mounting
  • The reed sensor never comes in direct contact with the movement of the door- non-contact sensor
  • The reed sensor comes with various lead, connectors and lead lengths for ease of connection
SeriesDimensionsmminchesIllustration
MK02W32.41.276 MK02 Reed Sensor
H16.70.657
L10.00.394
MK02/5W46.01.811 MK02/5 Reed Sensor
H18.350.722
L13.00.512

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