Customer Reviews For The 10-Year Battery Natural Gas and Carbon Monoxide Alarm

The Universal Security Instruments USI/NGCO/10YR provides dual protection by continuously monitoring for methane (natural gas) leaks and dangerous carbon monoxide (CO) levels. Featuring a built-in 10-year sealed lithium battery, this natural gas detector operates 24/7, even during electrical power outages.

Natural gas (methane) is lighter than air, it rises toward the ceiling. For optimal detection, mount the unit high on a wall. This would typically be within 12 inches of the ceiling, near potential gas sources like gas stoves, furnaces, or water heaters. Avoid installing natural gas alarms directly above appliances or in drafty corners where airflow might delay leak detection.

Yes. The USI 10 Year Natural Gas and Carbon Monoxide Alarm is engineered to meet UL 1484 standards for residential gas detectors as well as UL 2034 for carbon monoxide safety. Its calibrated sensor provides early warning against gas accumulation and includes a loud 85 dB horn with a visual LED alert to notify residents before explosive thresholds (LEL) are reached.

To test your natural gas detector, press and hold the front Test/Reset button until the 85 dB siren sounds. If a non-hazardous trigger occurs (such as temporary household aerosols or cooking vapors), press the Auto Silence button to temporarily quiet the alert while venting fresh air through the space.

The Universal Security Instruments USI/NGCO/10YR features an automatic end-of-service life indicator. Exactly 10 years after activation, the unit will issue an audible chirp and visual code indicating that the sealed battery and gas sensors have reached the end of their operational lifespan, signaling that the unit should be replaced with a new natural gas detector.