Rotary Encoder 20 detents / revolution, 2 pulses / detent, with push button, mounted on a pcb.
Knob for rotary encoder or potentiometers.
This is a PCB for EC11 type rotary encoders, with or without button.
The 0.1" pitch connector makes it easy to connect dupont cables (4 pins : E1,E2,GND,Push)