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Market Information

H21AX - H22AX Transmissives Opto Sensors

h21ax_h22axDescription:

The H21 A and H22 A  series of opaque photointerrupters are single channel switches consisting of a Gallium Arsenide infrared emitting diode and a NPN Silicon phototransistor mounted in a polycarbonate housing.

adobe_pdf_iconThe package is designed to optimise the mechanical resolution, coupling efficiency, ambient light rejection, cost and reliability. Operating on the principle that objects opaque to infrared will interrupt the transmission of light between an infrared emitting diode and a photo sensor switching the output from an "ON" state to an "OFF" state.

 

Features

  • High gain
  • 3mm gap between LED and detector
  • Polycarbonate case protected against ambient light
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