Magnetic Contact, High Security, Balanced, Anti-Defeat, Double Bias, Screw Mount, Alnico 6 Magnet, NO-NC, 3 VA, 1-3/8 to 3" Gap, 4" Length x 1.35" Width, Aluminum Housing

MFR PART #  4440004  | BMC-33B
PART #  738295
Minimum 1 Each
In Stock


  • The BMC-33B Anti-Defeat Magnetic Contacts are Uniquely Designed and Constructed to Make Defeating Almost Impossible
  • The Switch Housing Contains Specially Arranged Reed Switches
  • These Reed Switches are Pre-Set in a Biased Format with Ring Magnets, Producing a Symmetrical Magnetic Field
  • The Magnetic Layout is Designed with a Combination of Three Polarized Magnets
  • This Switch and Magnetic Combination Produces a Perfect Symmetrical Magnetic Field in a Balanced Condition as If No Magnet Field Existed
  • An Attempt to Bypass or Defeat the BMC-33B with an External Magnet will Cause the Magnetic Fields to be Imbalanced, Thus Causing an Alarm Condition


UNSPSC Code 46171600

Spec Sheet

Spec Sheet

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