Is it a potentiometer? What kind of potentiometer it is? It has 5 pins.

 

Hello,

Does it look like the potentiometer with switch on this page?
https://www.tubesandmore.com/products/potentiometer-alpha-audio-spst-switch

Bertus

 

It is a pot with a built-in switch on the bottom, commonly used as the volume control with an on/off switch combined. For example in a radio, the power is turned off when the control is turned fully counter-clockwise.

 

the power is turned off when the control is turned fully counter-clockwise.

Some you push or pull the knob to operate the switch.