2.5", Flange mount, NEMA 4, Class I DIV II, double bearing with shaft seal, 80 lb shaft load, Optical Incremental, Programmable from 1 to 1024 count, 5-30V power, Open collector outputs, Side connector, 10-pin Differential Quadrature Incremental Encoder with Index and complimentary outputs, M12 connector, Standard Aluminum case