First Alert CO400A Battery Powered Carbon Monoxide
Updated August 9, 2026
| Lot number | 270207 |
| Estimate | 36.34 CAD |
| Auction | AU35 - Furniture, General Merchandise, Electronics & More |
| Date | August 13, 2026 at 7:00 PM EDT |
| Auction house | Auction Universe |
| Location | Scarborough |
T3 | Original Title: First Alert CO400A Battery Powered Carbon Monoxide Alarm Brand: First Alert Model: CO400A Condition: Open Box - Not Tested Damaged?: Unknown In Packaging?: Yes Assembly Required?: No Missing Parts?: Unknown Functional?: Unable to Test SAME AS CO400A ASIN: B004Y75ZS2 Battery operated, 9V battery included Mute button, mutes unnecessary alarms. Also tests alarm function with same button Low battery Signal mute, quiets low battery Signal for up to 8 hours Electrochemical sensor, most accurate technology available for detecting carbon monoxide* *compared to other common sensing technologies End of life timer, alarm chirps when it is time to replace it Care: Vacuum the CO Alarm cover once a month, using the soft brush attachment. Never use water, cleaners, or solvents, since these may damage the unit. Test the CO Alarm again after vacuuming.
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