Optical Proximity Switches for sensing all types of objects from large distances. Magnetic Proximity Switches for high speed sensing of metallic objects (Applications such as Gear Wheel Speed Sensor) Ultra-Sonic Proximity Switches usually for Liquid...
optical level switch is a type of point level sensor used to detect the presence or absence of liquid at a specific level in a tank or container. An optical level switch uses infrared light: It has an IR LED + phototransistor inside a small prism...