PTL Series - Slide Potentiometer with LED PTL Series slide potentiometer with LED lever illumination, a carbon element and a linear taper. The PTL series slide potentiometers are available in a choice of two colours / travel length options with a 15mm lever and a centre detent. Applications for the PTL series include mixing consoles, drum machines, keyboards and synthesisers and equalisers. Colour / travel length options:- 30mm travel length option with Green LED
60mm travel length option with Red LED
60mm travel length option with Green LED