The SOE-24H is (UL 268 7th edition listed) is a combination smoke and UL521 7th Edition listed heat detector.The new multi-spectrum smoke categorization technology detects smoldering and flaming fires, including polyurethane fuels, while reducing nuisance cookingalarms.

STANDARD FEATURES
Optimized reduction to false alarms and enhanced reaction time to real fires
High signal-to-noise ratio and sensitivity stability effective in a wide range of environmental conditions
Wide viewing angle alarm indicators
Automatic drift compensation and maintenance indication
Built-in magnetic test feature
Break-away, hidden locking feature for use with NS bases