# Universal Security Instruments 4-Pack Hardwired and 3-Year Replaceable Battery Backup Combination Smoke and Carbon Monoxide Detector w/ Voice Alarm

**Brand:** [Universal Security Instruments](https://shop.coreranger.com/brands/Universal%20Security%20Instruments)
**Model #:** USI/SMCO/HWREP-4
**SKU:** HD-334670757
**Price:** $216.97 · out of stock
**URL:** https://shop.coreranger.com/product/universal-security-instruments-4-pack-hardwired-and-3-year-replaceable-battery-backup-combination-sm-334670757

## Specifications

| Spec | Value |
|---|---|
| Included | Batteries,Installation Kit,Mounting Hardware,Owner's Manual |
| Pack Size | 4 |
| Alert Type | Siren,Voice |
| Returnable | 90-Day |
| Voltage (V) | 120 V |
| Power Source | Hardwired |
| Alarm Sensor Type | Photoelectric |
| Product Depth (in.) | 1.7 in |
| Product Width (in.) | 6.1 in |
| Battery Type Required | AA |
| Commercial/Residential | Home |
| Alarm/Detector Features | Battery Back-Up,Hush Button,Light Indicator,Tamper Resistant |
| Certifications and Listings | ETL Listed |

## Description

Experience unparalleled protection with the USI Hardwired Combo Smoke, Fire, and Carbon Monoxide Alarm. Equipped with Sensing Plus Multi-Criteria Detection, this advanced Photoelectric alarm accurately identifies both slow-burning and fast-flaming fires, ensuring early detection and rapid response. An included electrochemical sensor detects carbon monoxide, for a single compact home safety solution. This hardwired alarm sends alerts to compatible hardwired alarms in the home for comprehensive coverage. Backup battery power ensures continuous protection during power failures. This alarm features a voice alarm, offering clear guidance differentiating between fire and CO alerts and replacement reminders. Advanced technology reduces nuisance alarms, minimizing disruptions from activities like cooking. Should you experience a false alarm, easily silence it with the test/silence button. With UL certification, you can trust in the reliability and performance of USI Hardwired Combo Alarms. Invest in peace of mind and protect your loved 1 s with this advanced home safety solution. With over 50-years of experience as a leader in home safety, USI provides reliable, long-lasting protection for your home.

• Hardwired smoke, fire and CO alarm with voice alert
• Replaceable batteries for continuous power protection
• Interconnected design for easy sound creation