Simple direct coupling reduces installation and commissioning time and improves reliability by eliminating damper linkages. Single screw coupling provides three-point shaft gripping. Small, compact design — allows installation in tight-fitting locations designed for zone damper actuator applications. Proportional models are dip switch selectable for DA / RA and DC 0…10 V or DC 2…10 V operation. DC 0(4) 20 mA proportional control with optional 500 Ohm resistor. Long life brushless synchronous drive motor technology – provides constant running time independent of load. 100,000 full stroke cycle, 1,500,000 reposition rating. Manual gear release simplifies setup and field adjustments position feedback (GGX models) provides simple, closed-loop control with accurate position sensing.