An electrosurgical instrument includes a housing having an elongated shaft extending therefrom and a rotatable member disposed on the housing and operably connected to the elongated shaft. The elongated shaft defines a longitudinal axis extending therealong. The rotatable member is configured to rotate the elongated shaft about the longitudinal axis upon actuation thereof. The rotatable member includes an inner surface defining an interior space therein configured to house at least one printed circuit board about the elongated shaft.
