The CU5021E is a 5kR 2W 1-gang panel-mounting Rotary Potentiometer with screwdriver slot adjustment and moulded composition. The potentiometer element moulded into a single, integral structure and metal cover protects and shields the internal parts and the synthetic resin containing non-mercurial fungicide sealing. The potentiometer is electro-mechanical device and it is subject to mechanical wear and therefore it has a finite life.