The Hammond 166R12 is an economical single primary filament transformer designed for a wide range of applications. Its open-style, channel bracket, and two-hole chassis mount construction provide versatile mounting options. The transformer features a 115V 60Hz primary and a 12.6 C.T. secondary, delivering reliable power conversion. It's ideal for applications where a compact and efficient transformer solution is needed, and is UL listed and CSA certified.