5 pieces of EC11 rotary encoder (18position) with 4 mm half shaft — precise, reliable control for car navigation, audio amplifiers, and electronics projects. Why you need this Precise tactile feedback: 18 detent positions give repeatable stops for accurate adjustments such as volume, tuning, or menu selection. Easy replacement or upgrade: fits equipment and control panels designed for standard EC11 encoders with a 4 mm half (flat) shaft. Saves time in and prototyping: a 5piece pack provides spare units for multiple devices or future projects. Key benefits Improved control: distinct clicks at each position make adjustments predictable and reduce overshoot. Versatile use: suitable for car navigation knobs, audio amplifier controls, industrial panels and DIY electronics. Costeffective: multiple encoders in one pack let you several worn controls or build multiple prototypes without sourcing individual parts. Main features and attributes Model: EC11 rotary encoder Positioning: 18position detents for clear, repeatable stops Shaft: 4 mm half shaft (flat side) — designed to accept standard 4 mm knobs and setscrew mounting Quantity: 5 pieces per pack Functionality: rotary input for adjustment and selection; ideal for user interfaces requiring stepped feedback Construction: compact, panelmount friendly design built for repeated mechanical operation Compatibility and performance Industrystandard EC11 size and mounting make these encoders compatible with many car navigation head units, audio amplifier front panels, and embedded controller boards that use EC11type knobs. The 18position detent system provides reliable mechanical feedback for human interface controls and menu navigation. Compact footprint allows integration into both consumer electronics and hobbyist projects. Typical use cases a worn or broken volume/selector encoder on a car navigation or head unit to restore precise control. Install on an audio amplifier or preamp front panel for stepped volume or tone adjustments where tactile feedback is desired. Use in DIY electronics and microcontroller projects (menu navigation, parameter tuning, rotary input) where a standard EC11 encoder is required. Quick installation tips Match the flat side of the 4 mm half shaft to the setscrew or Dshaped knob for secure fitment. Verify pinout and mounting orientation against your device or PCB before soldering or final assembly. Keep one or two spares from the pack for future maintenance needs. Specifications (as supplied) Model: EC11 Detents: 18 positions Shaft: 4 mm half shaft Pack quantity: 5 pcs