The Kidde i12020CA is a 120V AC, wire-in smoke alarm that can function as a stand alone unit or interconnect with up to 24 Kidde devices (of which 18 can be initiating).
DSCONTINUED, replaced with 1275 (battery back up model)
• Ionization Technology – Sensitive to fast flaming and other fires
• 120V Interconnectable up to 24 devices (18 of which can be initiating - limit of 12 smoke alarms)
• Multi-function One Button Design includes: Hush and Test Feature alarm operation.
• Tamper Resist Feature