Ring Sensors Door & Window Sensor

• Amazon now offers Ring Sensors for doors and windows, now $19.99 (originally $29.99).
• Prime members enjoy free two-day shipping; free shipping on orders over $35 for non-Prime members within the U.S.
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Editor's Pick: Helps deter burglaries by instantly detecting when a window or door opens. Installs in minutes—no tools or wiring required. Connects via Amazon Sidewalk for simple, flexible coverage at home and around your property. Add 24/7 professional monitoring with a compatible Ring subscription—emergency response for break-ins, fires, and more, with no long-term contract required.