AC Hardwired Interconnect Ionization Smoke Alarm with Hush – i12040A (Part No. 21006378)

The i12040A AC Hardwired Interconnect Ionization Smoke Alarm is a reliable and high-performance fire safety device designed for residential and commercial applications. Powered by 120V AC/DC hardwired connection and equipped with a 9V battery backup, this alarm ensures continuous protection even during power outages.

This model utilizes advanced ionization sensing technology, which is highly responsive to fast-flaming fires that produce invisible fire particles. Ionization alarms are particularly effective at detecting rapidly spreading fires, providing early warning when every second counts. For complete fire safety coverage, it is strongly recommended to use ionization alarms alongside photoelectric alarms to detect both flaming and smoldering fire types.

The i12040A supports interconnect capability, allowing multiple alarms to communicate and sound simultaneously throughout the property. This ensures faster alerts and improved evacuation response in larger homes or buildings.

Designed for ease of use and installation, the alarm features a one-button control system that functions for both Test and Hush™ modes, allowing users to quickly silence nuisance alarms or perform routine checks. A large mounting base ensures stable installation, while the pre-stripped wiring harness with tinned strands simplifies electrical connection for installers.

Additional safety and usability features include tamper-resistant protection, an alarm memory function that retains the last alarm event, and a durable design suitable for long-term use.

The i12040A is UL Listed (Signaling Listed) and backed by a 10-year limited warranty, making it a dependable and professional-grade smoke detection solution.

Key Features

• 120V AC/DC hardwired ionization smoke alarm
• 9V battery backup included for power failure protection
• Ionization sensing technology for fast-flaming fires
• Interconnectable with compatible alarm systems
• One-button Test and Hush™ control
• Alarm memory feature for last event recall
• Tamper-resistant design for added safety
• Large mounting base for stable installation
• Pre-stripped wiring harness with tinned strands
• UL Signaling Listed product
• Suitable for residential and contractor use
• 10-year limited warranty
• Part Number: 21006378

Specifications

• Model: i12040A
• Part Number: 21006378
• Power Supply: 120V AC/DC Hardwired
• Backup Battery: 9V Battery Included
• Sensor Type: Ionization
• Detection Type: Smoke (fast-flaming fires)
• Interconnectable: Yes
• Control Type: One-button Test & Hush™
• Features: Alarm Memory, Tamper Resistance
• Installation: Wired (pre-stripped harness included)
• Mounting Base: Large base design
• Certification: UL Signaling Listed
• Warranty: 10-Year Limited Warranty