Designed to position balancing, control, round, and zone dampers in HVAC systems. This non-spring return electric actuator is also designed to position blades in a VAV box, or it can be used in VVT 2-position zone applications. Long life brushless synchronous drive motor technology helps provide constant running time independent of load. The small, compact design allows installation in tight-fitting locations designed for zone damper actuator applications. Simple direct coupling helps reduce installation time and improves reliability by eliminating damper linkages. No additional linkages or couplers are required. A single screw coupling provides 3-pt. shaft gripping.