Firex i4618 Hardwired Ionization Smoke Alarm (120V AC with Battery Backup)
The Firex i4618 Smoke Alarm is a hardwired 120V AC/DC powered smoke detector designed to provide reliable fire protection for residential and light commercial applications. It includes a 9V battery backup, ensuring continuous operation even during power outages.
This alarm uses ionization sensing technology, which is highly responsive to fast-flaming fires by detecting invisible combustion particles early. It delivers dependable performance when rapid fire detection is critical.
The i4618 is designed with convenience and safety in mind. It features a front-loading battery door, allowing users to replace the battery easily without removing the unit from its mounting bracket. It also includes a Hush® feature, which temporarily silences nuisance alarms, making it especially useful in kitchens and high-activity areas.
For enhanced system reliability, the alarm includes a tamper-resistant locking feature and an alarm memory indicator, which identifies the originating alarm in an interconnected system. It is also interconnectable with up to 24 devices, including smoke, CO, and heat alarms.
Built to meet safety standards, the Firex i4618 is UL Listed and comes with a 5-year limited warranty, making it a dependable choice for wired home fire alarm systems.
Key Features
- Hardwired 120V AC smoke alarm
- 9V battery backup for power outage protection
- Ionization sensing technology for fast-flaming fire detection
- Front-loading battery door for easy replacement
- Hush® feature to silence nuisance alarms
- Tamper-resistant locking mechanism
- Alarm memory indicator for interconnected systems
- Interconnectable with up to 24 devices (smoke, CO, heat)
- Loud audible alarm for emergency alerts
- UL Listed product
- 5-year limited warranty
- Part Numbers: 21006376, 21007581
- Previous Models: 120-1182, FADC, 120-538B, i5000
Specifications
- Model: Firex i4618
- Power Source: 120V AC hardwired
- Backup Battery: 9V alkaline
- Sensor Type: Ionization
- Alarm Type: Smoke alarm
- Installation Type: Interconnected capable
- Features: Hush®, alarm memory, tamper-resistant lock
- Interconnect Capacity: Up to 24 devices (18 initiating)
- Certification: UL Listed
- Warranty: 5 years
