Closing a roller shutter automatically is wonderfully convenient. But what if there’s an obstacle in the way? Or if the shading solution is frozen in winter? Or if the material is expanded by sun and heat? Becker has the answer to these problems in the form of the E01. The drive features sensitive obstacle detection with reversing. So when there’s an obstacle in the way such as a garden chair or toy, the drive stops, reverses and moves away from the obstacle. An anti-freeze mechanism switches off the drive before anything breaks, such as in winter when the roller shutter slats freeze due to rainwater or condensation. And it balances out any changes in the length of the roller shutter by regularly referencing itself at the upper stop. During the next movement, however, it stops just before the upper stop again in order to avoid unnecessary noise. Becker is one step ahead, so your roller shutter drive also stays one step ahead.