SL2000 Series 22 June 2024 by admin SL2000 Series (Duct Smoke Detector)Features :24 VAC/DC or 120/240 VAC operationSimple change-out of photo or ion detector headsLow _ow air velocity rating from 100 to 4000 FPMUL, CSFM and MEA ListedTwo (2) sets of 10A form “C” alam contactsOne (1) set of 10A form “C” trouble contactsEasy and quick mounting to round or rectangular ducts from 1’ – 12’ wideclear cover for convenient visual inspectionBuilt-in reset switch that is also an alarm test switch