The document describes the Senisys R-220/225 Series Reflective Optical Switches. These devices consist of a gallium arsenide IRED and silicon phototransistor mounted in an injection-molded plastic housing. The mechanical axes of the sensor and IRED coincide 0.200" (5.1mm) in front of the device, with peak current transfer occurring at approximately 0.175" (4.4mm).
| Dark Current (Phototransistor) | -100 nA max |
|---|
Peak current transfer occurs at approximately 0.175" (4.4mm).
The manufacturer recommends isopropanol or methanol.