ELTRA EL721A500Z5/28P10X6MR Incremental hollow shaft encoder. Size: 72mm. Distance between holes on flange: 63,5 mm Resolution: 500 ppr. With zero pulse. Power Supply: 5 - 28 V DC. Electronic interface: push-pull. Shaft diameter: 10mm. Enclosure rating: IP 54. Rotation speed: 6000 rpm max. Radial M connector output. Series is recommended for industrial application with high mechanical resistance requiements.