Amazon: First Alert Combination Smoke and Carbon Monoxide Detector $22.36 (Regularly $54.99)

The highly rated First Alert SCO5CN Combination Smoke and Carbon Monoxide Detector is on sale at Amazon for only $22.36 (reg. $54.99), a savings of 59%. The battery operated  detector features indicator lights on the unit's face along with a loud warning siren to alert you of the presence of smoke or carbon monoxide. Shipping is $5.99 or FREE on orders over $25. Get FREE 2-day shipping on ANY size order with Amazon Prime (sign up for a FREE 30-day trial here).