Next generation optical smoke sensing technology wide 0. 53 to 3. 94 %/ft. 1. 7 to 12. 35 %/m smoke obscuration uses existing wiring automatic device mapping up to 250 total signature addresses per loop two levels of environmental compensation two levels of dirty detector warning twenty pre, Alarm settings five sensitivity settings non, Volatile memory electronic addressing identification of dirty or defective detectors automatic day/night sensitivity adjustment bicolor green/red status led standard, Relay, Fault isolator, And audible mounting bases sensor markings provide easy testing identification