The Astro-Swing, models 2511, 2553, 9331, 9342, and 9553, is a powered door operator that can be used on side hung or center pivot doors, in new or existing installations, inside or outside. Opening time is 3 to 5 seconds, and can be adjusted up to 30 seconds. Doors open to a 90-degree angle, closing with spring action, and exerting less than 15 pounds of pressure. For safety, the door will stop if obstructed. Models include concealed overhead mount, single door (2511); concealed overhead mount, pair (2553); surface mount, single door (9331); pole mounted push arm, single door (9342); or simultaneous pair (9553). A security lock is available. Activation options include push button on wall, on-door jamb, photoelectric eye, motion detector, floor contact mat, and radio control. POWER: Power requirements are 115 volts, 15 amp. In case of power failure, 14 pounds of force are required to open the door. DIMENSIONS: Maximum door width 48 inches. WEIGHT: Maximum door weight 200 pounds. WARRANTY: 1-year warranty on parts and labor.