Ring Outside Door Sensor for $20 + free shipping w/ Prime

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This Ring Outside Door Sensor is $20, matching its all-time low price on Amazon and down from its regular price of $40. It's rated IP66 for weather resistance and can run for up to 10 years on battery power, all without needing a separate base station. Buy Now at Amazon Features Sends alerts when a gate, shed, garage, or other entry point opens IP66-rated for rain, snow, and direct sun Operates in temperatures from -4°F to 120°F Up to 10 years of battery life Connects via Amazon Sidewalk witho

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