SOMFY'S Synchronizing Control is designed to control two motors simultaneously. When two SOMFY motors are mounted in a single tube, moving a single window covering, it is important that the motors coincide with each other. The Synchronizing Control actuates and stops both motors at the same time. This helps prevent damage to the tube, motor, and window covering. It is very important not to exceed the load/weight limitations of the mounting hardware such as brackets, fasteners, etc. when synchronizing two SOMFY operators. The Synchronizing Control is available with either maintained (IGC-type) or momentary (GCS-type) outputs.