Optical Switches

Optimize the mechanical resolution, coupling efficiency, & ambient light rejection with Jameco's selection of optical switches. Our stock of the H21A series of opaque photo interrupters are single channel switches consisting of a Gallium Arsenide infrared emitting diode and a NPN silicon photo transistor mounted in a polycarbonate housing. These devices feature a polycarbonate case protected against ambient light. Choose from our wide selection below!