MI-300 Calibration Monitor

Calibration monitor made by Monitor Instruments to meet OSHA's daily audiometer calibration requirement. This bio-acoustic simulator can be wall or table mounted.

Lightweight, durable, and with automatic shutoff, it has both response and power indicators.

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  • LED indicators for response and power
  • Automatic shut-off
  • Wall or table mountable
  • Lightweight
  • Rugged
  • Requires one 9-volt battery


  • Calibration monitor
  • Response cable
  • Rubber feet
  • Operator guide
  • (Headphones not included)

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