SEARCH IN Search All Audible/Visible Notification Products Conventional Detection Products HVAC Systems Monitoring Products Intelligent Detection Products Sprinkler Systems Monitoring Products LifeSafety Newsletter Articles FOR Home About Our Company New Products CO1224T Carbon Monoxide Detector InnovairFlex Duct Smoke Detector Advanced Multi-Criteria Fire Detector SpectrAlert Advance Audible Visible Notification Product Information Library Training LifeSafety Current Issue Archive Press Room Contact Us Privacy Statement Conventional Detection Audible/Visible Notification HVAC Systems Monitoring Sprinkler Systems Monitoring Intelligent Detection Conventional Detection Product Line i3 Series • 100 Series • 400 Series • Heat Detectors • Beam Detectors 2-Wire Compatibility • Multi-Voltage Relays • Bases • Accessories • Carbon Monoxide Conventional Detection Search for: 2W-B 2W-B Data Sheet (pdf) Installation Instructions (pdf) The 2W-B is a 2-wire, photoelectric i3 smoke detector.