X-Sense Wireless Interconnected Smoke Detector Fire Alarm 6-Pack for $137 + free shipping

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This six-pack of X-Sense smoke detectors is $28 off the regular price of $165. Each alarm runs on a sealed 10-year battery, so there's no need to swap batteries over the unit's lifespan, and the whole set can interconnect with up to 18 compatible alarms so every detector sounds when one senses smoke. Buy Now at Amazon Features can add new devices to the existing network wireless interconnection 820 ft transmission range 10-year battery life