The V19B-11R-12G-S part is a multi-function selector switch from Onpow. It is a rotary switch with 19 positions (V19B) and 11 positions of circuit continuity (11R). It has 12 sets of gold-plated, single-pole, double-throw contacts (12G), and a chrome-plated brass body (S). It is designed to be mounted and sealed into a panel and is rated both UL and cUL.