Automatic drift compensation
 
 
 
 
 Built-in, dual-sensor heat detector with fixed heat and rate of rise (non UL listed)
 
 
 
 
 Built-in 85dB horn
 
 
 
 
 Local test button
 
 
 
 
 Low profile design
 
 
 
 
 High/Low sensitivity reporting
 
 
 
 
 Low battery indication
 
 
 
 
 Easy-maintenance removable smoke chamber
 
 
 
 
 Non-contact sensitivity reading with handheld test meter (FSD-100)
 
 
 
 
 Long-life lithium batteries included
 
 
 
 
 UL/ULC/EN listed for residential applications