View 2 of *** missing one of the bases that connects to the wall*** 
X-Sense Wireless Interconnected Combination Smoke and Carbon Monoxide Detector, 10-Year Battery Powered Fire and CO Alarm, SC06-W, 3-Pack

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View 1 of *** missing one of the bases that connects to the wall*** 
X-Sense Wireless Interconnected Combination Smoke and Carbon Monoxide Detector, 10-Year Battery Powered Fire and CO Alarm, SC06-W, 3-PackView 2 of *** missing one of the bases that connects to the wall*** 
X-Sense Wireless Interconnected Combination Smoke and Carbon Monoxide Detector, 10-Year Battery Powered Fire and CO Alarm, SC06-W, 3-Pack