Search the website   The Croci shutters have been deliberately developed to allow all kinds of operations, the classical strap operation, crank operation or installation of the most modern automation systems complete with remote controls. With or without manual override Accessories Radio control systems Real lifting capacities schedule With or without manual override Tubular alternating current motors for rolling shutters TUBULAR MOTORS WITHOUT MANUAL OVERRIDE Alternating current 220-230V - 50 Hz TUBULAR MOTORS WITH MANUAL OVERRIDE Alternating current 220-230V - 50 Hz