A disposable vital signs monitor patch includes hydrogel based conductive adhesives which contacts skin. A medical tape bonds to the skin and has printed silver-silver chloride electrodes. The hydrogel based conductive adhesives interact between the skin and the printed silver-silver chloride electrodes. A double-sided medical tape bonds to the medical tape. A printed circuit board assembly (PCBA) includes a vital signs sensor, a flexible battery, a light emitting device (LED), connects to the printed silver-silver chloride electrodes, and bonds to the double-sided medical tape. A polyethylene foam includes a cut-out for the flexible the LED. The PCBA bonds to the polyethylene foam layer. A plunger operates within a cut-out on the polyethylene foam layer. An acrylic adhesive transfer tape bonds to the acrylic adhesive transfer tape. The medical tape, the double-sided medical tape, the polyethylene foam, and the acrylic adhesive transfer tape bond to seal against environmental exposure.