Potentiometer generally has life span which depends on how many cycles they are used.

Though transmitter potentiometer deterioration rely on driving style and setting differences, potentiometer will be deteriorated for long term using.

Potentiometer deterioration lead to decrease response speed and stable operation.

Replacement with new ST & TH Unit can keep transmitter performance.

SANWA recommended to replace ST & TH Unit for every 200 hours using.

*Must do Calibration after changing ST & TH Unit.

*The unit can be used for M17.