The JELONNEK 542809 Transformer (PMZ 135 64) is a JelonneK power transformer identified by model 542809 and the PMZ 135 64 designation, designed for 115V input at 50/60 Hz. It explicitly lists 115V and 50/60 Hz as its operating specifications, indicating compatibility with mains across common 50 Hz and 60 Hz networks. The 542809 model code anchors this unit in JelonneK’s transformer lineup, distinguishing it from other part numbers in the series.
