Kidde Battery-Operated Carbon Monoxide Alarm with Digital Display sells on Amazon. I think the price is very good. Please read some of the reviews and see what people thought of the product. Do check how you might qualify for a free shipping offer if available.
- Large digital display is easy to read, even in low-light conditions
- Peak-level memory displays the highest CO concentration measured since the last reset
- Meets the requirements of Underwriters Laboratories (UL)
- Battery operated with three AA batteries included
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