Best Marinetech in 2026

Operating Temperature: -40° F to +158° F

Loud 85 dB Alarm

Dimensions: 6 3/8” W x 2 7/8” H x 1” D

Sport Type: Boating

Purchase multiple alarms for whole-home detection - place 1 carbon monoxide detector on each level of your home & outside each sleeping area to help protect against poisonous CO gas

UL Certified, 10-year limited warranty

Whole home family protection - place 1 carbon monoxide detector on each level of your home & in your bedroom to protect from poisonous gases

UL Certified, 10-year limited warranty

Electrochemical sensing technology - CO alarm detects the presence of carbon monoxide gas, 85 decibel alarm & memory storage

UL Certified, 10-year limited warranty

Easy to read digital display - allows for easy viewing of carbon monoxide levels

UL Certified, 10-year limited warranty

Photoelectric sensor detects visible fire particles associated with slow, smoldering fires, while the electrochemical sensor detects carbon monoxide

85-decibel alarm & LED warning indicators alert you to various status: green = normal operation, amber = operating error, and red = smoke, fire or carbon monoxide event

Battery operated to provide reliable detection, even during power outages; two AA batteries included

UL Certified with a 10-year limited warranty on alarm

Battery operated unit installs quickly and easily without an electrician. Low battery signal mute, quiets low battery signal for up to 8 hours

Simple to use, with a single test/silence button; EZ access battery drawer allows you to change battery without removing alarm from ceiling

7 year limited warranty; Equipped with end of life signal chirp, so you know when it’s time to replace the unit for safety; All first alert alarms are rigorously tested to meet UL standards. Emits T3 Pattern

It can ship within the US except New York

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)

To ensure complete protection make sure to place 1 on each level of your home and in each bedroom

7 year limited warranty; Equipped with end of life signal chirp, so you know when it’s time to replace the unit for safety

All First Alert CO alarms are rigorously tested to meet UL standards

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 standards. Emits T3 pattern

Keep your family safe with this 6 pack of hardwired smoke alarms; the battery backup means constant monitoring, even if there's a power failure

Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety. easy-to-access battery drawer that allows you to replace the battery without dismounting the alarm

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)

Photoelectric sensor detects visible fire particles associated with slow, smoldering fires, while the electrochemical sensor detects carbon monoxide

85-decibel alarm & LED warning indicators alert you to various status: green = normal operation, amber = operating error, and red = smoke, fire or carbon monoxide event

Battery operated to provide reliable detection, even during power outages; two AA batteries included

UL Certified with a 10-year limited warranty on alarm

Photoelectric sensor detects visible fire particles associated with slow, smoldering fires, while the electrochemical sensor detects carbon monoxide

85-decibel alarm & LED warning indicators alert you to various status: green = normal operation, amber = operating error, and red = smoke, fire or carbon monoxide event

Battery operated to provide reliable detection, even during power outages; two AA batteries included

UL Certified with a 10-year limited warranty on alarm

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

Test-Hush Feature - silences the unit for approximately 8 minutes; tamper-resistant technology deters removal of the unit from the wall or ceiling

UL Certified, 10-year limited warranty

Loud 85 decibel siren sounds to alert you to danger

To ensure complete protection make sure to place one on each level of your home and in each bedroom

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)

CO detector looks out for carbon monoxide and tells you where it's located

With App Silence you can silence the smoke alarm with your phone in the Nest app when there's only a little smoke

No chirps to tell you the battery is low; Nest Protect tests its own batteries and gives you a Nightly Promise when you turn off the lights so you know everything is working

A Light in the Dark: Usually Nest Protect has its light turned off but when you walk underneath it Pathlight can light your way.

The Nest smoke and carbon monoxide alarm has sensors with a 10-year lifespan to help keep your family safe for up to a decade

With Safety Check you can test all your smoke and CO alarms with just a tap and get a full report once the test is done

Know from anywhere. Connect Nest Protect to Wi-Fi and it will send an alert to your phone if the alarm goes off or the batteries run low.

Tells you what and where. It speaks up to tell you if there’s smoke or CO and where the problem is, so you know what to do. Connectivity: Bluetooth 4.0 LE, Wi-Fi 4 (802.11n)

App Silence. Nest Protect is the first alarm you can hush from your phone. Simply walk to the Nest Protect that noticed the problem and open the Nest app.

Split-Spectrum Sensor. In an emergency, seconds count. Nest Protect uses two wavelengths of light to look for both fast and slow burning fires.

Heads-Up. Get a friendly voice alert so you can handle burning toast before it becomes a burning toaster.

10-year carbon monoxide sensor. Carbon monoxide is odorless, invisible and deadly. When there’s CO, Nest Protect tells you where it’s hiding.

Tamper resistant alarm also features a single test/silence button, side battery door, and missing battery guard

To ensure complete protection make sure to place one on each level of your home and in each bedroom

It can ship within the US except New York

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)

Loud pulsing alarm that will sound to alert you to a potential problem

Low battery warning feature indicates when the battery needs replacement

UL Certified, 5-year Limited Warranty

Two alarms in one detects carbon monoxide and explosive gas

Three convenient mounting options

Digital display and peak level button displays the peak CO level recorded by the alarm since it was last reset

Battery backup 9 volt battery included

Kidde’s carbon monoxide alarms meet the requirements of Underwriters Laboratories (UL), an independent facility that tests products for compliance with widely-accepted safety standards

CO detector looks out for carbon monoxide and tells you where it’s located

With App Silence, you can silence the smoke alarm with your phone in the Nest app when there’s only a little smoke

No chirps to tell you the battery is low; Nest Protect test its own batteries and gives you a Nightly Promise when you turn off the lights so you know everything is working

When you walk under the Nest Protect at night, Pathlight lights your way

The Nest smoke and carbon monoxide alarm has sensors with a 10-year lifespan to help keep your family safe for up to a decade

With Safety Check, you can test all your smoke and CO alarms with just a tap and get a full report once the test is done

Please refer to the product description section below for all applicable legal disclaimers denoted by the bracketed numbers in the preceding bullet points (e.g., [1], [2], etc.)

Green LED indicates power to the smoke detector

An 85-decibel alarm sounds & a red LED indicates the smoke detector is sensing smoke or fire

Test-Hush button makes it easy to test the smoke detector and silence false alarms that occur from cooking or shower steam

UL Certified, 10-year limited manufacturer warranty

To ensure complete protection make sure to place one on each level of your home and in each bedroom

Meets UL217 standards and complies with legislative requirements for 10 year battery operated smoke alarms

Equipped with a dual photoelectric and ionization smoke sensor to quickly detect both fast burning and smoldering fires

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)

Operating Temperature: -40° F to +158° F

Loud 85 dB Alarm

Dimensions: 6 3/8” W x 2 7/8” H x 1” D

alarm point: < 25% lel of propane

operational range: 12vdc +/- 15%; operating temperature: -40° f to +158° f

Fit type: Universal Fit

Test/Silence Button: The single push of a button will either test or silence all units in the system

Full Home Coverage: Link up to 24 Link+ wireless smoke alarms, CO alarms, and combination alarms for maximum home protection

Easy to Install: This smoke and CO detector is easy to mount onto any wall or ceiling using the included accessories

Simple Installation: Requires no rewiring; easy to mount this smoke and carbon monoxide alarm on any wall or ceiling with the included mounting bracket, screws, and anchor plugs

Premium Quality: Made from a premium PC material, ensuring exceptional quality and protection; approved by the ETL and meets the UL 217 and UL 2034 safety standards

Whole home family protection - place 1 fire alarm on each level of your home & in your bedroom; maximum of 24 Kidde devices can be interconnected

UL Listed, 10-year limited warranty

Package contains 6 Kidde smoke detectors

Test-Hush Button - it’s simple to test or hush false alarms by pressing the button right on the face of the device

UL Certified, 10-year limited warranty

Whole-home interconnection — maximum of 24 Kidde devices of this type can be interconnected; when one alarm sounds, they all do

Hush button — quickly and easily silence false or “nuisance” alarms from things like routine cooking or shower steam

UL Listed, 10-year limited warranty

Product 1: To ensure complete protection make sure to place 1 on each level of your home and in each bedroom

Product 2: Help keep your family safe with this battery powered smoke alarm featuring an ionization sensor for smoke detection; a loud 85 decibel alarm sounds when smoke levels are elevated

Product 2: Ionization sensor is effective in recognizing smoke from flaming fires such as paper and grease fires

Product 2: Battery operated alarm unit provides continuous monitoring even if there's a power failure; Plus, it's easy to install

Product 2: Tamper resistant alarm also features a single test/silence button, side battery door, and missing battery guard

Photoelectric smoke detector senses visible fire particles and electrochemical CO detector provides accurate readings

UL Certified, 10-year limited warranty

Will interconnect with up to 24 other devices including smoke, CO and heat alarms