Siemens GMA OpenAir Electronic Damper Actuator

The OpenAir direct-coupled spring return electronic actuator is designed for modulating, two-position, and floating control of building HVAC dampers.   Features: Brushless DC motor technology with stall protection Bi-directional fail-safe spring return Models available with dual, independently adjustable auxiliary switches Unique self-centering shaft coupling Manual override Available in 62 lb-in torque 5° preload as shipped from factory Mechanical range adjustment capabilities UL and cUL listed, CE certified • 24 Vac/dc compatible   Available Part Numbers: GMA126.1U - 24Vac, 2 Position Control, Standard Cable, Dual Auxiliary Switches GMA221.1U - 120Vac, 2 Position Control, Standard Cable,  GMA226.1U - 120Vac, 2 Position Control, Standard Cable, Dual Auxiliary Switches Please call or email for Information regarding part numbers not listed above.   Resources: GMA Actuator Technical Literature