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Skywin Wireless Outlet and Battery Free Kinetic Light Switch - Stick on Wireless Light Switch for Lamps and Household appliances - Easy to Install and Completely Battery Free Switch and RF Outlet:
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Battery-free, wireless soft sensors for continuous multi-site measurements of pressure and temperature from patients at risk for pressure injuries | Nature Communications
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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
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