20pcs Transmission Type Photoelectric Switch Optical Interrupter Photoelectric Sensor Switch Opto Photo Interrupter Switch Slot Optocoupler sold2026 and self locked Arts craftsOUR GUARANTEE Our and self locked the key may be pressed at the bottom of the bag The BY H42B6 (Slot Optical Switch) is a gallium arsenide infrared emitting diode which is coupled with a silicon photo transistor in a plastic housing 20pcs Transmission Type Photoelectric Switch Optical Interrupter Photoelectric Sensor Switch Opto Photo Interrupter Switch Slot Optocoupler
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