Product Description
. . . . . Siemens GMA221.1U GMA 2-Position Spring Return 62 lb-in Rotary Electronic Damper Actuator (120 Vac) -
This model comes with Standard cables. The OpenAir direct-coupled spring return electronic actuator is designed for modulating, two-position, and three-position control of building HVAC dampers. Used in constant or variable air volume installations for the control of return air, mixed air, exhaust, and face and bypass dampers requiring up to 62 lb-in (7 Nm) torque. Designed for applications that require the damper to return to a fail-safe position when there is a power failure.. Siemens. Siemens. GMA221.1U.