Kidde NightHawk KN-COB-B-LP Carbon Monoxide Detector Battery Operated CO Alarm

Kidde NightHawk Carbon Monoxide Alarm, model KN-COB-B-LP, sold under the Code One brand name. This is a single-station, battery-operated CO detector that runs on 3 AA batteries (included). The unit appears new and unused, still sealed in its original plastic bag inside the original box. Key features include an 85-decibel alarm, a Test/Reset button, and a 10-year limited warranty on the alarm unit. It meets UL response-time standards, alarming within 60-240 minutes at 70 ppm, 10-50 minutes at 150 ppm, and 4-15 minutes at 400 ppm. Operates in temperatures from 40 F to 100 F and humidity from 10% to 95% non-condensing. Manufactured by Kidde, P/N 21029508. The box shows some wear, creasing, and minor damage at the corners, but the detector itself appears unissued and remains in its factory sealed bag. Important: CO detectors have a manufacturer-rated service life, typically 5-7 years from the manufacture date. Please confirm the manufacture date printed on the unit before purchase to ensure the remaining service life meets your needs.