Buy Cheap First Alert SA501CN2 ONELINK Wireless Battery Operated Smoke Alarm, 2-Pack


List Price : $129.99
Sale Price : $69.99

  • First Alert ONELINK battery operated wireless smoke alarm
  • Uses photoelectric sensing technology which is environmentally friendlier
  • Simple to use silence/test button
  • Low battery warning and convenient pullout battery drawer
  • Includes 2 AA batteries and comes with a 10 year warranty

First Alert SA501CN2 ONELINK Wireless Battery Operated Smoke Alarm, 2-Pack Overview

First Alert SA501CN2 ONELINK Wireless Battery Operated Smoke Alarm, 2-Pack - Eco friendly- Photoelectric smoke detecting- Reduces nuisance alarms- EZ-Access battery door- Easy-to-use mute button- RF interconnect- 2 pk

First Alert SA501CN2 ONELINK Wireless Battery Operated Smoke Alarm, 2-Pack Specifications

(First Alert SA501CN2 ONELINK Wireless Battery Operated Smoke Alarm, 2-Pack Best Price,Cheap First Alert SA501CN2 ONELINK Wireless Battery Operated Smoke Alarm, 2-Pack) If you want to build an integrated smoke alarm system, but without the cost and hassle of retrofit wiring in your home, the ONELINK Wireless Smoke Alarm Two Pack is an ideal choice. These alarms provide ultimate protection from a deadly threat, and they are packed with innovative features that give you precious time in the event of a fire. And because they are able to wirelessly communicate with each and with other ONELINK devices, these alarms can help you create a whole-home safety network.



Keep your entire home safe with a network of ONELINK alarms that communicate with each other wirelessly.


ONELINK's mesh network ensures you'll hear an alarm no matter where you are in the house.

The ONELINK Wireless Smoke Alarm Two Pack
At-a-Glance:
  • Expand or create an interconnected smoke alarm system.
  • Loud 85-dB siren; dual purpose mute/test button.
  • Photoelectric technology detects smoldering fires and reduces false alarms.
  • Easy-access battery door; includes 4 'AA' batteries


You'll hear the loud 85-dB siren even when sleeping or showering. View larger.
Faster Notification for Faster Escape
In the event of a fire, every second counts. Unfortunately, traditional battery-operated alarms can often cost you precious time. For example, if a fire starts in your basement while you're asleep upstairs, you may not hear the smoke alarm, and it may take several minutes before the heat and smoke reaches an alarm that's close enough for you to hear its siren.

Thankfully, the ONELINK Wireless Smoke Alarms are designed to provide the earliest warning possible and give you valuable time in an emergency. When either of these clever devices detects smoke, all the ONELINK alarms in your home will sound immediately, increasing your chances of getting out safely.

Interconnectivity Without the Wires
Until now, alarms that could signal each other were only available in homes with hardwired systems. All ONELINK alarms, however, communicate with each other wirelessly through integrated radio frequency. This means that when one sounds, they all sound, providing a whole-home safety network.

This two-pack of ONELINK alarms helps you create a new system or expand an existing 120-volt AC system of up to 18 alarms. Just replace one or two of the alarms with a ONELINK Wireless Smoke Alarm, and your alarms will continue to be able to communicate with one another.

Accurate Technology Minimizes False Alarms
Utilizing environmentally friendly photoelectric technology to sense smoke, ONELINK Wireless Smoke Alarms provide optimal protection against smoldering fires. This technology also reduces the chance of false alarms caused by cooking or bathing.

Designed for Safety and Ease of Use
As user-friendly as they are effective, each ONELINK Wireless Smoke Alarm has a dual-purpose button that silences the alarm and tests the system's function. And because the alarms each emit a loud 85-dB siren, you'll be sure to hear them, even if you're asleep or in the shower. The audible low-battery signal can be muted for up to eight hours (so as not to disturb your sleep).

Additionally, each alarm has an easy-access battery door that allows for quick changes without necessitating that you remove the alarm from the ceiling. An optional theft-protection lock prevents unauthorized removal of the batteries or unit.

As safe as they are easy to use, these ONELINK smoke alarms are FCC compliant for wireless device standards, and they meet UL217 standards for wireless smoke alarm systems.

Each ONELINK Wireless Smoke Alarm is backed by a 10-year limited warranty.

What's in the Box
Two Wireless Smoke Alarms; four 'AA' batteries; instructional DVD; and manual.



The First Alert ONELINK provides more features and better protection than standard alarms.

First Alert SA501CN2 ONELINK Wireless Battery Operated Smoke Alarm, 2-Pack Review

#First Alert SA501CN2 ONELINK Wireless Battery Operated Smoke Alarm, 2-Pack Best Review# I ordered this product about 4:00 p.m. one day and received it on my porch by noon the very next day. The instructions are easy to follow and it comes with a DVD if you prefer to watch the instructions rather than read them. The alarms are extremely loud and communicate well to each other. I have four installed in my house and may add two more. I have only had them installed a few days, so I will see how well they continue to work in time. The manufacturer gives it a five year warranty. So far, the dual pack is the best way to go as it makes them a little more affordable.

Limited range, but works as advertised - H.M.M. - Hershey, PA USA
Purchased two smoke/carbon monoxide detectors and two smoke-only detectors for different areas of the house. Units function as advertised but found to have what I consider to be very limited range.

Setup was simple, and everything worked perfectly during short range tests. However, when units were placed 25' apart with a single wood stud/drywall wall between them they wouldn't communicate. Tried to relocate slightly in case I was getting interference from wiring in the wall, but no luck. Also tried different units in different positions/orientations in case transmission was direction or there were variations in signal strength between units. No luck.

FirstAlert customer service was friendly but had no real solution other than to reorient or reposition the detectors. They said the expected range is about 30'. Not for me.

Overall I'd say they're good products with good features (haven't had them long enough to comment on battery life). However, the limited range limits placement options and/or requires a relatively dense network of detectors.

PS: Smoke-only and smoke/carbon monoxide detectors WILL work together in a network. However, the smoke-only detectors don't have ability to "say" carbon monoxide. If a carbon-monoxide detector is triggered and relays an alert to a smoke-only alarm, the smoke-only alarms only has the ability to say (for example) "evacuate... smoke in bedroom!"

Combination Smoke and CO alarm - Stanley M. Smith -
I received the smoke alarms in a very timely manner. I installed them right after I received and read the easy and simple instructions.I installed 4 units- very easy and simple installation. I was finished within an hour.I have been testing them once a week.Seem to be fine.

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Buy Cheap First Alert SA511CN2-3ST ONELINK Wireless Battery Operated Smoke Alarm with Voice Location, 2-Pack


List Price : $171.99
Sale Price : $73.49

  • First Alert ONELINK battery operated smoke alarm with voice location
  • Uses photoelectric sensing technology which is environmentally friendlier
  • Simple to use silence/test button
  • Low battery warning and convenient pullout battery drawer
  • Comes with a 10 year warranty

First Alert SA511CN2-3ST ONELINK Wireless Battery Operated Smoke Alarm with Voice Location, 2-Pack Overview

First Alert SA511CN2-3ST ONELINK Wireless Battery Operated Smoke Alarm with Voice Location, 2-Pack Eco-friendly Photoelectric Smoke Detecting Reduces Nuisance Alarms 2 Pk Easy-to-use Mute Button Inter-connected

First Alert SA511CN2-3ST ONELINK Wireless Battery Operated Smoke Alarm with Voice Location, 2-Pack Review

#First Alert SA511CN2-3ST ONELINK Wireless Battery Operated Smoke Alarm with Voice Location, 2-Pack Best Review# We just bought a house built in 1910 that we have split into Antique Store downstairs and living quarters upstairs. Needless to say, rewiring for the wired smoke alarms would ruin the Antique look of the house. These work perfect, just like they advertise. We have them throughout the house from the basement to the 2nd story and when tested they alarm and loud man's voice says what room and then one by one all of them go off. Much more annoying than your average alarm! We love them!

Don't waste your money! - A. Thomas - San Diego, CA
Ordered a two pack, set them up between a bedroom and the garage in a single story, 1958 California home, 50ft distant (read: cheap thin walls with no insulation). They will not communicate between each other at that distance. Re-initialized them just in case, still a no go. I let them sit like that for a month. Just tested them again: no go.

Moved the one in the garage to the hallway just outside the bedroom one, worked fine. Moved it down the hallway to the living room (15 feet distance, one thin door separating them): no go.

Took them outside: max communication distance is about 25 feet line of sight. Past that, no go.

Bottom line, these do not work as advertised. Don't waste your money. I know someone who has the Kidde equivalent and she swears by them. I might try those out next.

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Buy Cheap Wireless Ionization Smoke Alarm (DC) Interconnectable


List Price : $90.83
Sale Price : $72.66

  • Power Source: Three AAA Batteries - Sensor: Ionization
  • Audio Alarm: 85dB at 10 ft. - Temperature Range: 40°F to 100°F
  • Humidity Range: up to 85% relative humidity (RH) - Size: 5.75" Diameter x 1.25" Depth
  • Weight: .5 lbs - Interconnect: Up to 24 Kidde devices (of which 18 can be initiating)
  • LED: Green, normal operation; Red, alarm condition - Digital Display: No

Wireless Ionization Smoke Alarm (DC) Interconnectable Overview

Wireless Ionization Smoke Alarm (DC) Interconnectable Model Number 919 - Size: 5.75" Diameter x 1.25" Depth - Weight: .5 lbs - Interconnect: Up to 24 Kidde devices (of which 18 can be initiating) - LED: Green, normal operation; Red, alarm condition - Digital Display: No - Warranty: 10 year limited -

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Buy Cheap SA511B, First Alert OneLink Wireless Battery Powered Smoke Alarm with Voice




SA511B, First Alert OneLink Wireless Battery Powered Smoke Alarm with Voice Overview

SA511B, First Alert OneLink Wireless Battery Powered Smoke Alarm with Voice First Alert OneLink Wireless Battery Powered Smoke Alarm with Voice

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Buy Cheap RF-SM-DC, Kidde Battery Powered Wireless Interconnectable Smoke Alarm




RF-SM-DC, Kidde Battery Powered Wireless Interconnectable Smoke Alarm Overview

RF-SM-DC, Kidde Battery Powered Wireless Interconnectable Smoke Alarm Kidde Battery Powered Wireless Interconnectable Smoke Alarm

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Buy Cheap First Alert SA521CN ONELINK Hardwire Wireless Smoke Alarm with Battery Backup


List Price : $75.99
Sale Price : $37.99

  • Hardwire wireless smoke alarm with battery backup
  • Uses photoelectric sensing technology which is environmentally friendlier
  • Low battery warning; simple to use silence/test button; pullout battery drawer
  • Add additional battery operated First Alert ONELINK alarms to expand without wires
  • 120-volt with 2 AA battery backup

First Alert SA521CN ONELINK Hardwire Wireless Smoke Alarm with Battery Backup Overview

First Alert SA521CN ONELINK Hardwire Wireless Smoke Alarm with Battery Backup In the event of a fire every second counts. If a fire were to begin in your basement and the alarm there sounded, you may not hear it right away if you're sound asleep two floors up. With traditional battery-operated alarms, you lose valuable time waiting for the smoke to rise to another alarm, on another level, before the alarm on your floor sounds. But with First Alert ONELINK alarms, if one detects danger, they all sound. This can alert you sooner, and it increases your chances of getting out safely.

Until now, alarms that could signal each other were only available in homes with hardwired alarms requiring installation from an electrician. But First Alert ONELINK alarms communicate without wires.

The First Alert ONELINK SA501CN alarm uses photoelectric sensing technology which is environmentally friendlier and which reduces nuisance alarms, making it ideal for cooking areas. It is also great for sensing slow smoldering fires quickly. The alarm includes a low battery warning and a super bright escape light. You can easily expand an existing interconnected 120-volt AC system by replacing one alarm in the series with this alarm. The test/silence button both silences a non-threatening alarm or low battery warning and allows you to test the unit's functionality. The AA batteries are easy to install in the convenient pullout battery drawer. Two AA batteries included.--Bree Norlander

What's in the Box
One smoke alarm, two AA batteries, and user's manual

First Alert SA521CN ONELINK Hardwire Wireless Smoke Alarm with Battery Backup Review

#First Alert SA521CN ONELINK Hardwire Wireless Smoke Alarm with Battery Backup Best Review# I have 7 of the First Alert SA520 Onelink units that were installed in my home 2.5 yrs ago. They were easy to set up although getting power to each unit in an older, 3-story home was the biggest challenge. They link to each other well. You may wish to install them in a particular sequence if using many of them on different floors. That way when the first one goes off, you might have a fighting chance of knowing which one it is since that one sounds off first. The reason I say this is because ours have begun going off in the middle of the night for no apparent reason. It has happened 4 times in about 4 months, and we never know when it will happen. They start sounding the alarm but shut off after about 20 secs, by themselves. We thought we had one defective unit but after removing it several days ago, they went off again tonight (6pm). All the other times have been when we were dead asleep, and boy is that a shock! These units are LOUD!
Gave it four stars for loudness and ease of setup. Minus one star for this bad habit I've described. Anyone know what might be causing this? Can they be tripped by RF interference? Says on the back that they "have to accept interference even if detrimental." (Who thought that one up?)

FOLLOW UP LATER.....
I discovered that the unit that was giving me trouble was near a ceiling fan on a dimmer switch that must have been sending dirty power into the circuit while it was running (as motors can do). when the fan is not running, i haven't had the problem with the false alarm. my suggestion is to narrow the search to find the one sending the alarm and take it off of the line power and run it only on the batteries to see if a dimmer or motor is causing the problem.

worth the $, high-quality, easy, so far so good - Jiminy Cricket - downstate NY USA
Bought 6 of these to replace my 13-year old BRKs. Easy to install. The wireless "mesh" interconnect feature was very easy to set up and seems extremely well designed. [The sensors in your "mesh" all recognize and talk to each other so that any sensor can trigger any or all the others, but they all ignore any sensors not programmed into their little network, i.e. they supposedly ignore the neighbors sensors. Also, if one sensor is remote, it only needs to be able to reach one other sensor in the net. It does not need to be able to reach all others...they will relay the alert.] They can also easily link into any existing hard-wired interconnect system in addition to the wireless.

Also I like the combination of battery backup and hard-wired power.

I also like the one button operation. Press the button to test, and press it again to silence any alert. So far so good. I think they are definitely worth the extra $ for trouble-free reliable detectors.

I also like the fact that they are optical (non-radioactive). But the instructions recommend to have both types (optical and radioactive ionizing), so I think I'll be buying 2 more of their ionizing type, one for each floor. Ionizing is supposedly better (than optical) for kitchen and wood stove areas.

I'll update this review if my opinion changes, but so far so good.

First Alert SA521CN - J. Lomonaco - USA
I installed eight of these and it was a simple process. All eight are in sync and work well. They are much better than the low cost units they replaced.

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Buy Cheap ALARM ENTRANCE WIRELESS [Misc.]




  • Up to 100 foot range.
  • Plug-in receiver.
  • Transmitter battery included.
  • Alerts you when a monitored door is opened.
  • Ideal for home, retail store, offices, etc.

ALARM ENTRANCE WIRELESS [Misc.] Overview

ALARM ENTRANCE WIRELESS [Misc.] "ACE" PLUG-IN ENTRY ALERT CHIMEUp to 100 foot range.Plug-in receiver.Transmitter battery included.Alerts you when a monitored door is opened.Ideal for home, retail store, offices, etc.Westminster or ding dong selection; high quality chime sound.128 selectable codes.Volume control.White.5 year warranty.Clamshell.

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Buy Cheap Onelink Wireless Battery Operated Smoke Alarm Twin Pack




Onelink Wireless Battery Operated Smoke Alarm Twin Pack Overview

Onelink Wireless Battery Operated Smoke Alarm Twin Pack Onelink Wireless Battery Operated Smoke Alarm - Twin Pack Now get two and Save! Wirelessly interconnect alarms. Battery operated wireless interconnect smoke alarm. Easily link alarms together with the press of a button. When one alarm sounds, they all sound for maximum whole home protection. Photoelectric smoke sensor reduces nuisance alarms from cooking smoke or shower steam. Easy access battery drawer: no need to remove alarm from ceiling to change battery. 10-year limited warranty. Wireless battery operated smoke alarm meets UL standards. This ONELINK wireless alarm is for you if: ● You want to build a safety network of interconnected alarms in your home without the cost and hassle of wiring. ● You want an instructional DVD on the benefits of Onelink Products. Where To Place Carbon Monoxide Alarms: One on every level of the home and one in each sleeping area. First Alert Smoke Alarm SA501CN2-3ST

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Buy Cheap SA511B, First Alert OneLink Wireless Battery Powered Smoke Alarm with Voice




SA511B, First Alert OneLink Wireless Battery Powered Smoke Alarm with Voice Overview

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Buy Cheap First Alert SA511CN2-3ST ONELINK Wireless Battery Operated Smoke Alarm with Voice Location, 2-Pack


List Price : $171.99
Sale Price : $70.00

  • First Alert ONELINK battery operated smoke alarm with voice location
  • Uses photoelectric sensing technology which is environmentally friendlier
  • Simple to use silence/test button
  • Low battery warning and convenient pullout battery drawer
  • Comes with a 10 year warranty

First Alert SA511CN2-3ST ONELINK Wireless Battery Operated Smoke Alarm with Voice Location, 2-Pack Overview

First Alert SA511CN2-3ST ONELINK Wireless Battery Operated Smoke Alarm with Voice Location, 2-Pack Eco-friendly Photoelectric Smoke Detecting Reduces Nuisance Alarms 2 Pk Easy-to-use Mute Button Inter-connected

First Alert SA511CN2-3ST ONELINK Wireless Battery Operated Smoke Alarm with Voice Location, 2-Pack Review

#First Alert SA511CN2-3ST ONELINK Wireless Battery Operated Smoke Alarm with Voice Location, 2-Pack Best Review# We just bought a house built in 1910 that we have split into Antique Store downstairs and living quarters upstairs. Needless to say, rewiring for the wired smoke alarms would ruin the Antique look of the house. These work perfect, just like they advertise. We have them throughout the house from the basement to the 2nd story and when tested they alarm and loud man's voice says what room and then one by one all of them go off. Much more annoying than your average alarm! We love them!

Don't waste your money! - A. Thomas - San Diego, CA
Ordered a two pack, set them up between a bedroom and the garage in a single story, 1958 California home, 50ft distant (read: cheap thin walls with no insulation). They will not communicate between each other at that distance. Re-initialized them just in case, still a no go. I let them sit like that for a month. Just tested them again: no go.

Moved the one in the garage to the hallway just outside the bedroom one, worked fine. Moved it down the hallway to the living room (15 feet distance, one thin door separating them): no go.

Took them outside: max communication distance is about 25 feet line of sight. Past that, no go.

Bottom line, these do not work as advertised. Don't waste your money. I know someone who has the Kidde equivalent and she swears by them. I might try those out next.

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Buy Cheap Crow PW-SMK Wireless Photoelectric Smoke Detector




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Buy Cheap BRK First Alert Onelink Wireless 120 Volt AC/DC Smoke Detector SA520B




BRK First Alert Onelink Wireless 120 Volt AC/DC Smoke Detector SA520B Overview

BRK First Alert Onelink Wireless 120 Volt AC/DC Smoke Detector SA520B The BRK Firs Alert Wireless 120 Volt AC/DC powered smoke detector has interconnectivity and can wirelessly connect up to 18 Onelink alarms in your home and when one sounds, they all sound for increased whole-home protection. 120V AC hardwired, easily replace one existing hardwired alarm with Onelink SA520B and then add Onelink battery operated alarms to connect wireless alarms with hardwired alarms--when one sounds, they all sound. Battery backup, provides consistent protection for added safety during power outages. Photoelectric smoke sensing, optimal protection from smoldering fires. plus, reduces false alarms like those caused by cooking fires and shower steam. Mute button, mutes unnecessary alarms immediately, also tests alarm function with same button. Eco-friendly, completely recyclable as an electronic device. EZ access battery door, no need to remove alarm from ceiling to change battery. Optional theft-prevention lock, when activated, batteries and/or alarm cannot be removed without proper tools. 2AA batteries included. Loud 85db alarm. 10-year limited warranty. Smoke alarms should be replaced every 10 years for maximum protection. Meets UL217 standard and FCC compliant. NOTE TO CONTRACTORS IN MARYLAND. FULL CASES OF 12 EACH CAN BE DROPPED SHIPPED FROM FACTORY TO EXPEDITE ORDERS. NEED MORE AND WANT TO SEE OUR COMPLETE LINE OF SMOKE AND CARBON MONOXIDE DETECTORS. JUST CLICK ON THE UNDERLINED LINK NEAR THE TOP OF THIS PAGE THAT SAYS KIDDE AND FIRST ALERT SMOKE AND CO DETECTORS.

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Buy Cheap Wireless Ionization Smoke Alarm (DC) Interconnectable


List Price : $90.83
Sale Price : $72.66

  • Power Source: Three AAA Batteries - Sensor: Ionization
  • Audio Alarm: 85dB at 10 ft. - Temperature Range: 40°F to 100°F
  • Humidity Range: up to 85% relative humidity (RH) - Size: 5.75" Diameter x 1.25" Depth
  • Weight: .5 lbs - Interconnect: Up to 24 Kidde devices (of which 18 can be initiating)
  • LED: Green, normal operation; Red, alarm condition - Digital Display: No

Wireless Ionization Smoke Alarm (DC) Interconnectable Overview

Wireless Ionization Smoke Alarm (DC) Interconnectable Model Number 919 - Size: 5.75" Diameter x 1.25" Depth - Weight: .5 lbs - Interconnect: Up to 24 Kidde devices (of which 18 can be initiating) - LED: Green, normal operation; Red, alarm condition - Digital Display: No - Warranty: 10 year limited -

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Buy Cheap Gemini Wireless Smoke Detector (GEM-SMK)




  • FOR USE WITH THE GEMINI SECURITY SYSTEM BY NAPCO
  • Built-in test switch.
  • Visual LED indicates alarm and standby.
  • Includes batteries & mounting kit.

Gemini Wireless Smoke Detector (GEM-SMK) Overview

Gemini Wireless Smoke Detector (GEM-SMK) Add to your Gemini Security system with these seamless matched, upward- and downward-compatible components and you can customize a reliable system -- flexible enough to help you meet the most modest of budgets, yet expansive enough so you can secure even the most demanding of applications requirements.

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Buy Cheap RF-SM-DC, Kidde Battery Powered Wireless Interconnectable Smoke Alarm




RF-SM-DC, Kidde Battery Powered Wireless Interconnectable Smoke Alarm Overview

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