Devices and methods of use for brush holder assemblies are disclosed. The signal is processed and transmitted to a remote location. The first and second input shaft are connected, through a first clutch and a second clutch, respectively, to an input element, and disposed on the same axis. The data packet is retrieved from the buffer at an associated retrieval frame rate determined by the local clock signal, and an error indicative of the difference between the transmission frame rate and the retrieval frame rate is generated. The system also has a gas sensor for detecting the concentration of at least one of oxygen or hydrogen within the interior. A plastic bag may be positioned over the pair of pickup assemblies.