CMS-E-AR Evaluation Unit


EUCHNER CMS safety switches are based on the magnetic principle. The tamper-proof coded system was specifically developed to monitor moving machine components and movable safety guards. These are a suitable replacement for safety relays. The CMS-E-AR evaluation modules allow for the connection of a maximum of 30 read heads. These evaluation units can reach safety category 1, 2 and 3 in accordance with EN 954-1.



  • Coded magnetic actuator and sensor
  • Connect up to 30 sensors in series (Safety Category 1, 2)
  • Variety of read head and actuator sizes and styles
  • Connect 1 to 2 sensors in parallel (Safety Category 2, 3)
  • Variety of read head and actuator sizes and styles
  • LED self diagnostics
  • Wide sensing range


  • Non-contact system
    • Overcomes misalignment issues
    • Vibration resistant
  • Fault diagnostics
    • Minimizes down-time
  • Sensors operate thru stainless steel
    • Food machinery, etc
  • Long operational life
  • Operates under extreme environmental conditions e.g. dirt, moisture, ambient temperature


  • 35mm DIN mount
  • 25mm housing
  • Ambient operating temperature 0 to 55C
  • Up to 30 million mechanical operations
  • LED diagnostics
  • Plug-in terminal block

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