SOMFY LT FTS MOTOR TESTER CABLE Fabric Tension System (FTS) Tester Cable - 5 Wire. Allows for easy setting of the LT motor limit switches before connecting the motor to the controlling device. Main technical information: Applications:• Rolling shutter• Exterior Solar Screens •Retractable Awnings•Blinds•Projection Screen•Shades•Draperies•Interior Window Coverings