2- Wire Duct Smoke Detector, 2-Wire, Photoelectric w/ Fixed Thermal Sensor(12/24V), 2WT-B

System Sensor i3  series smoke detectors represent significant advancement in conventional smoke detection. The i3 family is founded on three principles: installation ease and intelligence.

Features:

• Plug-in detector line, mounting base included
• Large wire entry port
• In-line terminals with SEMS screws
• Mounts to octagonal and single-gang back boxes,
• 4-square back boxes, or direct to wall or ceiling
• Stop-Drop 'N Lock attachment to base
• Removable detector cover and chamber
• Built-in remote maintenance signaling
• Drift compensation and smoothing algorithms
• Simplified sensitivity measurement
• Wide-angle, dual-color LED indication
• Loop testing via EZ Walk feature
• Built-in test switch