Dwyer ACT-DA12 is a pneumatic and electric actuator designed for hazardous environments. It operates in temperatures ranging from -40 to 140°F (-40 to 60°C) and has power options of 110 VAC, 220 VAC, 24 VAC, or 24 VDC. The NEMA 7 enclosure is suitable for Class I, Group C & D; Class II, Group E, F & G; and Division I & II locations. It features various electrical connections, a position indicator, two limit switches, and a cycle time specified in the instruction manual. The actuator has a maximum supply pressure of 120 psi and is made of powder coated aluminum. The DA series is double-acting, while the SR series is spring return, both with specific supply pressure requirements. The accessory mounting is NAMUR standard, and modulation input is 4 to 20 mA. Overall, the Dwyer ACT-DA12 offers reliability and functionality in challenging industrial environments.