A speaker enclosure having a substantially seamless rigid outer skin, a middle sound absorbing layer, and a substantially seamless inner skin results in a lightweight speaker having sound absorbing characteristics. Thus, the optical communications module can exhibit excellent performance. A control circuit on the first module and a control circuit on the second module coordinate operation of the first and second modules to prevent the interference from causing the second module to function incorrectly. The handle extension can be rotated from a closed position, wherein the channel and the tool handle are juxtaposed, approximately 180\xb0 to an extension position for the application of increased torque or to an acute angle with respect to the handle.