PHOTOSWITCH

Photoelectric Pressure Sensors; [ Pattern Recognition Apparatus; Reflex Code Reading Apparatus; ] Photoelectric Detectors; [ Photoelectric Scanners; ] Photoelectric Controls; Photoelectric Receivers [; Reflectors; Fluid and Bulk Material Level Sensing Apparatus; Resistance Sensing Apparatus; Probes for Liquid Level Sensing Apparatus; Probes for Liquid Resistance Sensing Apparatus; Mounting Bases and Housing; Plug-In Control Modules; Counters; Relays; Lenses; Light Filters ]