Hohner manufactures a range of hallow shaft encoders from 4 to 42 mm in diameter, as well as many accessories for correct adjustment through an encoder on industrial devices. Hohner shaft halo encoder has CE and ROHS standards and also has an IP65 protection rating. It should be noted that the programmable encoder of the PR90H series is considered to be a series of Hewlett-Packard encoders. You can contact our experts to find out how to test the encoder, how to install the encoder and get the technical data of various encoder, as well as the catalogue of the encoder types.