smoke and carbon monoxide detector alarm 10 years battery 939

Smoke and carbon monoxide detectors that meet US market certification standards have a 10-year lifespan,ETL UL217/UL2034 listed,Smoke and carbon monoxide (CO) detectors are essential home safety devices that integrate smoke and carbon monoxide alarm functions, enabling them to quickly detect both fires (smoke) and silent, odorless, and toxic carbon monoxide gas produced by gas appliances.

Product Specifications

Working voltage:DC3V Built-in lithium battery Battery life:10 years Sound level:>85dB Alarm mode:Siren With Flash (Buzzer& Red LED) Co Alarm concentration:70ppm:60-240min,150ppm :10-50min,400ppm : 4-15min Execute criterion:UL217 /UL2034