The HLK-PM01 is a single module AC-DC converter, converting 100VAC / 240VAC to 5VDC.
This is simply a shield, which fits the module in order to power the Wemos D1 Mini directly from AC power lines.
Found in: lib/D1_mini.pretty/
Based on the shields template for Wemos D1 Mini by Jérôme Labidurie.
Found in: lib/Power_Supplies*
, lib/Power_Supply/
and lib/Power_Supply.pretty/
HLK-PM01 model pulled from CascoLogix KiCAD Libraries