The points to check before selecting a motorised system for your interior blinds: 1. Type of installation. The size of your windows and the weight of your interior blinds have an impact on the torque exerted by the motorised system you’ll select. For larger windows or heavier blinds, you’ll have to select a motorised system with greater torque. 2. Quiet motorised systems. To obtain the excellent acoustic performance offered by the Sonesse® range, we recommend that you: - Use the “Designed for Silence” accessories for the Sonesse® range or the ranges offered by our partners. - Select a smooth fabric. - Install the solution with care. 3. Available power supply. A power supply must be available near the motor. These Somfy products must be installed by a professional.