, Solenoids, Rotary Switches, and Illuminated Products Electroswitch has an extensive offering of encoders, both optical and mechanical, as well as rotary switches, illuminated push...-button switches and indicators, solenoids and value added assemblies. A hallmark of Electroswitch's success and quality is a tremendous emphasis on design, qualification and test... manufacturers, Electroswitch is the ideal "Source for Solutions." Optical and Mechanical Encoders Electromechanical Rotary Switches Illuminated Push-Button Switches and Indicators ...