Hardwired Smoke and Fire Alarm with 10-Year Battery Backup - USI/SM/HW10YR/P

The Universal Security Instruments Hardwired Smoke Alarm with 10-Year Battery Backup delivers reliable, continuous home fire protection. Running on 120V household wiring, this high-performance hardwired smoke detector includes a sealed lithium 10 year battery backup to keep monitoring your home during power outages. Built-in Sensing Plus Multi-Criteria Detection allows this 10 year smoke alarm to rapidly spot fast-flaming and slow-smoldering fires, while smart photoelectric tech prevents false alarms from kitchen smoke or bathroom steam.

For complete home safety, this interconnected hardwired smoke detector connects directly with compatible alarms so every unit sounds at once when danger is detected. Spoken voice alerts state the exact situation, helping you clearly distinguish between an active fire emergency and a maintenance warning. Installing this code compliant hardwired smoke detector with battery backup gives you total peace of mind and zero annual battery changes, making it the ideal 10 year smoke detector upgrade for any property.

Key Features & Benefits

• 120V Hardwired + 10-Year Backup: Runs on household AC power with a sealed 10-year lithium battery during outages.
• Multi-Criteria Smoke Sensing: Sensing Plus® technology detects both fast-flaming and slow-smoldering fires.
• Whole-Home Interconnect: Links with up to 24 USI devices to trigger all alarms simultaneously.
• Voice Alerts: Clear verbal warnings announce fire emergencies and system status updates.
• Smart Nuisance Resistance: Filters out everyday cooking smoke and steam to prevent false alarms.
• Easy Quick-Connect Setup: Includes a pre-stripped wiring harness and bracket for fast installation.

Industry Standards & Compliance

This alarm is certified to meet strict residential building requirements:

• ETL Listed: Tested to UL 217 (9th Edition) safety standards for single and multiple station smoke alarms.
• NFPA Compliant: Meets NFPA 72 requirements for hardwired residential fire detection systems.
• Federal Housing Standards: Fully compliant with FHA, HUD, and CSFM (California State Fire Marshal) regulations.
• New Construction Approved: Perfect for new builds, retrofits, and replacing existing 120V hardwired smoke detectors.

(Note: Connects directly to standard 120V household wiring. This combo alarm can replace existing hardwired units easily.

Where to Install This Alarm

For full residential safety compliance, this independent alarm can be mounted to either the ceiling or the wall.

• Recommended Placement: Inside every individual bedroom/sleeping room, directly outside of sleeping areas (within 21 feet of any bedroom door), and on every single level of your home, including basements.
• Ceiling Mounting: Install at least 4 inches (10 cm) away from any side wall.
• Wall Mounting: Position the top edge of the alarm between 4 inches (10 cm) minimum and 12 inches (30.5 cm) maximum below the ceiling line.

Installation Locations to Avoid

To ensure long-term accuracy and prevent false alarms, do not place this device:

• Within 6 feet of commercial or residential cooking appliances.
• Within 10 feet of high-humidity zones like bathrooms, dishwashers, laundry rooms, or sinks.
• Directly near air returns, ceiling fans, or drafty windows/doors that could blow smoke away from the sensor.
• In dusty, dirty, or insect-infested spaces (like uninsulated garages or attics).
• Near fluorescent light fixtures, where electronic noise can interfere with the circuitry.