The Tork Winch Curtain Stop CS 1000 is a self-checking safety device. This product is designed to catch the curtain shaft where failure is present. When the drive device or associated equipment fails and the curtain exceeds 0.75 RPS, the curtain will instantaneously stop the rotation of the shaft arresting any insecure load. The Posilok Curtain Stop CS 1000 has a modern attractive appearance and is finished in durable E-coat paint.