A-B Rockwell Automation 847H-DM2C-RQ00360. Incremental Encoder, 2.5" Diameter, Solid Shaft, Standard Square Flange, 1/4 Diameter Shaft with Flat, 8 30 V DC, 8 30V Line Driver (HTL), Radial Exit, 5 m (16.4 ft) Cable, B leads A, CW, Z gated with BN, 360 PPR