Firex Plug-in CO Detector with 9V backup

Updated August 7, 2026

Brand: Kidde Model: 21029915 Retail Price: $43 The digital readout of the Kidde Plug-In Digital Carbon Monoxide Alarm with 9-Volt Backup continuously displays carbon monoxide levels from 30 to 999 parts per million (PPM) and will sound an 85dB alarm when dangerous levels are reached. The carbon monoxide level sensed is continuously displayed and updated every 15-seconds and the peak level memory shows the highest level of carbon monoxide present since the last time the unit was reset or unplugged. Protection continues during power outages thanks to a 9-Volt battery backup. Alarm/Detector Features: Battery Back-Up, Digital display, Hush Button. Alert Type: Siren. Battery Type Required: 9-volt. Commercial/Residential: Home. Connector/Contact Type: None. Fixed or portable: Fixed. Included: Batteries. Pack Size: 1. Power Source: Plug-In. Voltage (V): 120. Certifications and Listings: UL Listed. Product Depth (in.): 1.9 in. Product Height (in.): 6 in. Product Width (in.): 3.5 in. Features: Battery Back-Up, Digital display, Hush Button. Alert Type: Siren. Disclaimer : DISCLAIMER: This listing contains a stock image of the item to be auctioned, in order to illustrate the item’s design and functionality when new. However, this stock image is provided for ILLUSTRATION PURPOSES ONLY and cannot be relied upon by any bidder. Instead, actual photos of the specific item up for auction are provided within the gallery. Any written overview regarding features, operations, or capabilities reflects the item’s original specification when new and does not guarantee current condition or complete performance. The absence of any description by Rockey Auction of the item to be auctioned does not establish an implied representation that it is new or functional. It is a bidder's sole responsibility to inspect all actual product photos, read descriptions carefully, and perform any desired pre-bid inspections or inquiries. Bids placed constitute full acknowledgment and satisfaction with the item's condition along with Rockey Auction’s terms AND CONDITIONS of sale, which can be found in full in the tab below.

Register & bid on this lot at Bidspirit →

More lots in this auction

• Philips Hue A19 LED Bulb, Color Changing 60W
• Inline Water Filtration for Refrigerators
• Tomcat Bait Station Blocks For Mice 4 pk
• Nitrile Traction Grip Gloves - Large
• 40/60 Pressure Switch for Well Pumps
• Architectural Mailboxes City Classic Mailbox
• Banbury 18 in. Towel Bar in Matte Black
• Economy 50 CFM Bath Exhaust Fan, ENERGY STAR

See all lots in 1036 HOME IMPROVEMENT AUCTION ~NORRY~ →