Best Power Failure Alarm

Kidde Heat Detector Hardwired with Battery Backup & 2 LEDs Interconnectable

Heat detector alerts to temperatures rising above 135⁰ Fahrenheit & sounds an 85-decibel alarm to help protect your family.
Protects during a power failure - heat alarm operates on a 120V wired power source with 9V battery backup.
Quick-connect power harness makes installation fast and easy.
Test Button lets you check that the heat sensor’s electronic circuitry, horn, and battery are working.
Interconnects with up to 24 Kidde devices including smoke and CO alarms.

Complies with all current 10-year legislation in U.S. states/cities where required.
Alarm features an ionization sensor for smoke detection, which is effective in recognizing smoke from flaming fires such as paper and grease fires.
Battery-operated unit provides continuous monitoring even if there's a power failure: Plus, it's easy to install.
Alarm also features loud 85-decibel alarm, easy mounting bracket, a single test/silence button, and an end-of-life signal so you know when to replace the unit.
To ensure complete protection make sure to place one on each level of your home and in each bedroom. Same features as SA340CN and SA340B but adds Sealed Battery Technology..
First Alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 (Based on a First Alert Brand Trust Survey in February 2018).
No Battery Changes for the Life of the Alarm.
Perfect Mount allows for easy alignment of alarm.

Ionization sensing technology - hardwired smoke detector detects visible fire particles, 85 decibel alarm alerts of fire.
Protects during a power failure - smoke alarm operates on a 120V power source with 3V lithium battery backup.
Whole home family protection - place 1 fire detector on each level of your home & in your bedroom - maximum of 24 Kidde smoke or CO detectors can be interconnected in a multiple stations.
Test-Hush Feature - silences the unit for approximately 9 minutes. Alarm Memory Indicator.

Lock-able door to protect your samples and products..
High and low temperature alarms, sensor alarm, power failure alarm and over temperature alarm..
Durable galvanized steel powder coated interior and exterior..

Supports most iPhone and iPod models with Universal Dock Connector.
App-enhanced speaker dock for the iPhone OS that combines an interactive app with a bedside alarm clock.
Wake to iPhone/iPod or buzzer, with additional alarms and features available via iHome+Sleep app.
Sure Alarm battery backup maintains clock setting and ensures alarm wake time in case of power failure.
iHome's Reson8 speaker chambers and specially designed high-end drivers deliver clarity, depth and power.

Keep your family safe with this hardwired smoke alarm the battery backup means constant monitoring, even if there's a power failure.
Equipped with an ionization sensor, this smoke alarm reliably detects smoke from fast flaming fires and alerts you with an 85 decibel alarm.
To ensure complete protection make sure to place one on each level of your home and in each bedroom.
Can connect to other compatible BRK or first alert smoke detectors, to ensure all alarms will sound when smoke is detected.
Simple to use, with a single test/silence button, and side load battery compartment tamper resistant locking brackets and universal mounting brackets make installation easy.
Rigorously tested to meet UL standards120 volt AC power with 9V battery backup to keep alarm functioning during power outage.
First Alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 (Based on a First Alert Brand Trust Survey in February 2018).
Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety.

Lock-able door to protect your samples and products..
High and low temperature alarms, sensor alarm, power failure alarm and over temperature alarm..
Durable galvanized steel powder coated interior and exterior..

Digital display shows the level of carbon monoxide the CO alarm is sensing, updated every 15 seconds.
Still works during a power failure - carbon monoxide alarm contains a 9V battery backup in case of plug-in failure.
Plug-in carbon monoxide detector can be installed in any outlet of your home.
use the attached extension cord to place on a table or shelf.
When CO detection is normal, a red dot appears in the lower right corner & blinks.
includes a test button that also resets the CO detector.
Includes 2 Kidde Nighthawk Carbon Monoxide Detectors.