ETL UL217 and UL2034 standard Smoke & CO Combo Detector

UL 217 is a safety standard developed by UL Solutions for single and multiple station smoke alarms. It outlines performance requirements to ensure smoke alarms provide reliable and effective protection against fire, including new fire conditions and technological advancements. The standard has been updated over time, with the latest revision (8th Edition) focusing on reducing nuisance alarms and improving detection of fires involving synthetic materials like polyurethane foam.
UL 2034 is the UL standard for Single and Multiple Station Carbon Monoxide Alarms. It sets performance requirements for carbon monoxide detectors to ensure they reliably detect dangerous levels of carbon monoxide. These requirements cover factors like alarm response time, environmental conditions, and resistance to false alarms.