SIPART PS2 Smart, electropneumatic positioner, PROFIBUS PA, Ex/nEx, single-acting, aluminum enclosure, for pneumatic linear and part-turn actuators. Standard Type of protection (Ex): Increased safety (Ex e), Dust ignition protection by enclosure (Ex t). Connection thread el.: M20x1.5 / pneu.: G 1/4 Without limit monitor. Without option module. . Brief instructions English / German / Chinese. Standard / Fail-Safe - Depressurizing the actuator in case of failure of electrical auxiliary power (single acting only). Without Manometer block / Booster.