The ADDRESSABLE DUCT DECTCOR, from Potter, meets all local requirements and NFPA regulations regarding duct smoke detectors. Units operate at an air velocity of 100 ft per minute to 4000 ft per minute in temperatures of 32°F to 120°F. They feature durable plastic enclosures with a clear cover and an integrated tamper switch. PAD300 Series models feature SLC In-and-out wire terminals. Compatible with addressable IPA and AFC/ARC Series panels. 24 VDC. UL listed.