These roller shutters may be manually or electrically oper-ated. The manually operated shullers are installed with the latest sophisticated springing systems. This ensures that even large shutters can be lifted with the minimum of effort. Electri-cally operated shutters provide effortless security. Large areas can be covered with just one shutters. Curtains can be operated with just the touch of a switch, either fire on the shutters or in a hand held remote control. Group controls and relays can operate multiple installations at the same time. Our engineers are always available to provide the technical information for other method of fixing. .