Description

The Kidde i4618 is a Firex hardwired smoke alarm designed to provide continuous residential smoke detection with battery backup for protection during power outages. Featuring dual ionization chamber sensing technology, it offers rapid response to fast-flaming fires while supporting interconnected alarm operation for enhanced home safety.

 

 

Technical Specifications

Condition	New/Never Used Surplus
Brand	Kidde
Category	Fire Alarm Systems
Part Number	i4618
Subcategory	Smoke Alarms
Series	Firex
Product Type	Hardwired Smoke Alarm
Detection Type	Dual Ionization Chamber
Power Source	120 VAC Hardwired with 9V Battery Backup
Electrical Rating	120 VAC, 60 Hz, 50 mA Max
Battery Backup	1 × 9V Battery
Alarm Output	85 dB at 10 ft
Alarm Threshold	Obscuration 1.35 ± 0.7%/ft
Interconnect Capacity	Up to 18 compatible Firex devices
Operating Temperature	40°F to 100°F (4.4°C to 37.8°C)
Humidity Range	10%–93% RH, non-condensing
Certifications	UL 217
Weight	8 oz (0.5 lb / 0.23 kg)

 

 

Information About I4618

The i4618 is part of the Kidde Firex Series of residential smoke alarms developed for permanent hardwired installation. It operates from a 120 VAC power supply and includes a 9-volt backup battery to maintain protection if AC power is interrupted. The alarm utilizes dual ionization chamber sensing technology and can be interconnected with up to 18 compatible Firex smoke, heat, carbon monoxide, and combination alarms, allowing all connected units to activate simultaneously during an emergency. Certified to UL 217 requirements, it is designed for reliable long-term operation in residential environments.

Key Features:

• Dual Ionization Sensor: Provides rapid detection of fast-flaming fires using dual ionization chambers.
• Hardwired Operation: Powered by 120 VAC for continuous smoke monitoring.
• 9V Battery Backup: Maintains operation during electrical power outages.
• Interconnect Capability: Supports connection with up to 18 compatible Firex alarm devices.
• High-Output Audible Alarm: Produces an 85 dB warning at 10 feet.
• UL 217 Listed: Meets recognized residential smoke alarm safety standards.
• Wide Environmental Range: Operates from 40°F to 100°F with 10–93% non-condensing humidity.
• Residential Fire Protection: Designed for homes, apartments, and other residential applications.

The i4618 delivers the reliability and precision required for continuous residential smoke detection and interconnected fire alarm protection.