DFS60B-TFAK02500https://cdn.sick.com/media/pim/3/33/433/IM0025433.png, Construction size (flange): Ø 60 mm, Communication Interface detail: TTL, Supply voltage: 4.5 V ... 5.5 V, Programmable/configurable: No, Mechanical design: through hollow shaft, Pulses per revolution: 2500