Amazon’s Gold Box Deal today is a nice 67% off this Kidde KN-COSM-B Battery-Operated Combination Carbon Monoxide and Smoke Alarm with Talking Alarm. If you don’t have one of these in your house, you should really consider buying on whether you use this deal or not. We all know smoke detectors are important, and Carbon Monoxide detectors are equally as important. If you home has a CO problem you may not know until it’s too late. The gas is odorless and can be deadly.
Today this unit is on sale for only $21.75 and is eligible for free Prime or Super Saver shipping. Here are a few product features:
- Talking alarm announces the hazard type detected, helping to speed up reaction time
- A single unit can be installed where previously two were needed
- Battery safeguard ensures the unit cannot be accidentally mounted without batteries installed
- Test-reset button tests alarm circuitry and triggers the voice announcement
- Meets requirements of Underwriters Laboratories (UL), an independent facility that tests products for safety compliance
Check out this offer here. The sale price is only good today, July 2.

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