A photoelectric sensor is an equipment used to discover the distance, absence, or presence of an object by using a light transmitter, often infrared , and a photoelectric receiver. They are largely used in industrial manufacturing. There are three different useful types: opposed (through-beam), retro-reflective, and proximity-sensing (diffused). Specifications: Product Code MS-02W Category FOTEK price 0.00 baht weight 500 grams brand FOTEK: generation MS-02W Product status Ready to ship condition New product Package Includes: 1 x FOTEK MS-02W  Photoelectric Switch, Color Mark Sensor