USI Battery Operated Carbon Monoxide Alarms implement 10 year permanent power via a lithium-free battery that ensures long lasting co detection. All USI battery powered detectors include built-in microprocessor intelligence that virtually eliminates nuisance alarms, ensuring you and your surroundings are warned of actual dangers. Universal Security Sensing Plus Combination Detectors use multi criteria detection that offers superior false alarm resistance. Powered by a 10 year lithium-free battery, 8th Edition Combination Alarms comply with the latest UL Standard (UL 8th Edition) that’s set for release on June 30th 2022. USI Battery Operated CO Alarms are available as standalone and combination detectors.
The USI 3-in-1 Smoke, Fire and CO Alarm offers ten years of protection against fast flaming fires, slow smoldering fires and carbon monoxide. A built-in microprocessor offers superior false alarm resistance.