# Rely Hardwire Smoke Alarm, 9V Battery Backup

**Brand:** [Rely](https://shop.coreranger.com/brands/Rely)
**SKU:** 5400
**Price:** $29.99 · in stock
**URL:** https://shop.coreranger.com/product/rely-hardwire-smoke-alarm-9v-battery-backup-700077645

## Specifications

| Spec | Value |
|---|---|
| Model # | 5400 |
| Included | Batteries |
| Pack Size | 1 |
| Alert Type | Siren |
| Internet # | 700077645 |
| Returnable | 90-Day |
| Store SKU # | 1015800699 |
| Voltage (V) | 120 V |
| Power Source | Hardwired |
| Alarm Sensor Type | Photoelectric |
| Product Depth (in.) | 1.5 in |
| Product Width (in.) | 6 in |
| Commercial/Residential | Residential |
| Alarm/Detector Features | Battery Back-Up,Hush Button,Interconnected,Light Indicator |
| Certifications and Listings | ETL Listed |

## Description

The Rely Essentials hardwired photoelectric sensor smoke alarm meets new industry standards with advanced technology that offers early warnings and helps reduce nuisance alarms. This interconnected smoke detector enhances safety by ensuring that if one alarm detects danger, all connected alarms will sound, alerting everyone in the home. This feature can be particularly beneficial in larger homes where a single alarm might not be heard throughout the entire space. Thoroughly tested and designed to meet the latest UL safety standards, this smoke alarm operates on 120V AC power with a 9-volt replaceable backup battery (included) for continuous detection even during power outages.