DESCRIPTION
The HOA1870 series consists of an infrared emitting diode facing an NPN silicon phototransistor (HOA1870- 031) or photodarlington (HOA1870- 033) encased in a black thermoplastic housing. Detector switching takes place whenever an opaque object passes through the slot between emitter and detector. 

FEATURES
• Choice of phototransistor or photodarlington output
• Accurate position sensing
• 0.070 in.(1.78 mm) slot width
• 18.0 in.(457 mm) min. 22 AWG UL 1007 wire leads
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