There is a standard 10M lead to connect to your projector to automate the screen drop and retraction via 12V trigger. This product also has built in RS232 and zero volt contact closure so you can control the screen with a control system. There is an optional zero voltage wall switch. This screen comes with a 2.7m power lead from the back left of the screen (when viewed from the front) and terminates in a standard UK power plug. We also have options to control your screen remotely. You will find some of the options suggested below. * Complete with Infra Red remote control , Extender and 12V trigger input on screen * 1:1 gain triple laminated glass-fibre white screen fabric