Heavy duty rugged shaft encoder protected against seawater and tropical climates EX Explosion-Proof Encoder EX II 2G Ex ib IIB T4 Gb Precise photoelectric or magnetic induction technology, good electromagnetic compatibility Up to 10,000 P/R pulses per revolution Over-voltage, over-current, surge protection Rugged metal housing, double bearing design, protection class up to IP68 Reverse short-circuit and short-circuit protection to minimize the impact of installation errors on the encoder.