Alps stec11 encoder with 6mm metal shaft and optional momentary switch alps stec11b04 this alps stec11 metal shaft incremental rotary encoder is vertical mounting these rotary encoders have a small footprint and a highly accurate sliding contacts applications include volume control in av equipment menu selection for in car navigation systems and other in car devices we also supply the stec12 range and other encoders a set of knobs specifically designed for rotary encoders is also availab