<http://presair.com/trp111e-3pr-tinytrol-miniature-pressure-switch/#webpage>
<http://schema.org/description>
"TRP111E-3PR Tinytrol Pressure Air Switch, Switch actuates at 3 Psi Rising, EPDM, SPDT, 21 amps, Side Spout. In Stock. Direct from USA Manufacturer."
<http://presair.com/trp111e-3pr-tinytrol-miniature-pressure-switch/>