The Turnils TDBU (Top-Down/Bottom-Up) motor—often utilizing AMP Motorization—is a specialized dual-shaft motor designed to independently control the movement of the middle and bottom rails on cellular and honeycomb shades.Key Features and SpecificationsIndependent Operation: Allows you to lower the shade from the top (for light and privacy) or raise it from the bottom like a standard shade.Power Source: Typically powered by rechargeable DC battery packs (like the Turnils AMP External Battery) or via plug-in low-voltage transformers.