A cemented carbide seal ring has at least one hard phase in a binder phase based on Co, Ni and Fe which results in a content Fe, Ni and Cr of less than 50 gl of each in a leach test with deionized water at 85 C. The resin includes a silane and a co-reactant monomer. Other embodiments are described and claimed. When it is required to change the mode position to the D-mode position, a second position learning portion learns a second reference position. A respective one of the tokens includes a plurality of data words.