This tester is designed for testing large and heavy exterior roller blinds and is a lower version of TR-A Universal SERWO: the height is powered by an electric geared motor and an encoder, controlled from the touch panel. Moreover the width distance between holders is set manually by the lift operator, while the clamps themselves are universal pneumatic clamps adjustable to many types of boxes. These holders make it easier to install the roller blinds on the tester and, to a greater extent than hand grips,  ensure compatibility for newly manufactured boxes.