RunLessWire Simple Wireless Light Switch Kit, No-Wires and Battery-Free Light Switches for Home (1 Receiver and 1 Light Switch) RW9-SKWH - The Home Depot
A4Tech's wireless and battery-free NB-57D optical mouse: "magic magnetism" unleashed!
Battery Free Wireless Optical Mouse and Pad (Round) with Vertical and — AramediA
Battery-free, wireless soft sensors for continuous multi-site measurements of pressure and temperature from patients at risk for pressure injuries | Nature Communications