Quadrature encoded rotary encoder with pushbutton can be used to provide an intuitive interface to your next project. Similar to the interface found on many 3D Printers. PCB mount with five terminals. Thirty detents/ fifteen pulses per revolution. Encoder has two SPST contacts sharing a common, pushbutton switch is SPST/NO. Shaft with flat for grub screw Three terminals for rotary encoder Two independent terminals for pushbutton Two large mechanical lugs for PCB mounting Mounting Method : PCB Packaged Volume : 0.01l Packaged Weight : 0kg Packaged Length : 3cm Packaged Width : 1.5cm Packaged Height : 1.3cm Switch Type : Rotary Pole Throw Type : SPST Poles / Contacts : 7 pole Switch Connection : PCB Pins