GI-H80 Series through hollow shaft encoder with 80mm hollow shaft, 18,20,30mm bole, resolution up to 6000ppr, 4 options of outputs NPN/PNP open collector, push pull, line driver and voltage output;GI-H80 series is idear for applications requiring a compact, high-precision, high-performance encoder. For tachometer feedback, or motor speed control applications, the Model GI-H80 Series is the ideal encoder choice. It is a thru-bore encoder available in both single channel (225A) and quadrature (225Q) models that provides a cost-effective solution for simple measurement. Features including an all-metal housing, a variety of connector options, and easy installation due to the thru-bore design, make GI-H40 Series ideal for most motion control and manufacturing applications.