First Alert Wireless Interconnect Battery Operated Carbon Monoxide Alarm With Voice Location - CO511B

  • First Alert Wireless Interconnect Battery Operated Carbon Monoxide Alarm With Voice Location - CO511B
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Provides a mesh network of communication between alarms
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Regular: $89.95
Price: $66.10
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Wireless Interconnect Battery Operated Carbon Monoxide Alarm w/ Voice Location

The First Alert CO511B Wireless Interconnected Carbon Monoxide Alarm with Voice and Location detects elevated carbon monoxide levels and can work with compatible models to create a wireless alert system throughout your home. This wireless-enabled battery-operated detector alerts you by using audible signals including a loud 85-decibel siren and that studies have shown to wake up children better than standard alarms. Wireless Interconnected technology allows other compatible First Alert wireless-enabled alarms located in separate areas of your home to communicate with each other, alerting you to a problem even when it's on another floor. The carbon monoxide alarm features a sensor for increased accuracy.

Can Be Connected with Compatible Alarms for Enhanced Safety

The First Alert CO511B Carbon Monoxide Detector can be connected with multiple alarms around your home or office to create a safety network of detection (additional alarms sold separately). Compatible wireless alarms can communicate with each other through a radio frequency, so when one alarm sounds, all of them sound. The communication distance (range) between any two First Alert Wireless Interconnect Alarms is typically 50 ft. (15 meters) inside of a home. Some features of a home, such as the number of floors, number/size of rooms, furniture and types of building materials used may reduce the range of wireless interconnect alarms. Earlier notification of danger means you can avoid dangerous CO levels sooner.

Battery-Operated Alarm Installs Easily

The battery-operated wireless interconnected carbon monoxide detector requires no wiring and no electrician to install. Simply put two AA batteries into the detector and mount it on any wall or ceiling. A low-battery light and chirp will let you know when the batteries need to be replaced. A one-touch button silences false alarms and allows you to test the CO detector for functionality.

Accurate Detection Technology

This carbon monoxide alarm uses an advanced electrochemical sensor to detect carbon monoxide leaks from multiple sources, including faulty fuel-burning appliances, blocked chimneys, and generators running inside or too close to homes. The voice alarm as well as indicator lights on the front of the detector identify both the threat and its location. Studies have shown that children wake up better to voice alarms than standard alarms.

First Alert Wireless Interconnect Battery Operated Carbon Monoxide Alarm With Voice Location can be preprogrammed with the following locations:

  • Basement
  • Kitchen
  • Child’s Bedroom
  • Living Room
  • Dining Room
  • Master Bedroom
  • Family Room
  • No Location
  • Guest Bedroom
  • Office
  • Hallway
  • Utility Room

First Alert Battery Operated CO Alarm w/ Voice Location - CO511B

Product Details
  • Wireless interconnectivity - reliable and secure radio frequency communication between alarms.
  • Talking alarm with voice location - when programmed, a voice will tell you the location of the unit where CO is detected.
  • Mesh network communication - 2-way communication format that sends, receives and re-sends the alarm signals providing a more reliable network.
  • Electrochemical CO sensor - most accurate technology available for detecting carbon monoxide as compared to other sensing technologies.
  • Tamper resistant - locks alarm to mounting bracket to prevent removal of battery and/or alarm. Perfect for apartment, dormitory or hotel applications.
  • Test/Silence: Electronically simulates smoke condition, causing the unit to alarm. Press and hold test/silence button.
  • Spread Spectrum Horn Tone - Lower and varying frequency makes it easier for the elderly with normal aged related hearing loss to hear the horn.
  • Latching Features: Alarm Latch - remembers which unit initiated an alarm. Low Battery Latch: Visually identifies unit in low battery condition.
  • Eco-friendly, completely recyclable as an electronic device.
  • End of Life Signal provides audible notification alarms needs to be replaced.
  • Operating Voltage: 3V (Two 1.5V AA) Battery Powered
  • Power Source: 2 AA batteries included.
  • Audio Alarm: 85 dB at 10 ft.
  • Voice Output: Choice of 11 pre-programmed locations
  • Interconnections: Up to 18 units, RF or hardwired (needs SA521CN-3ST or SA520B Bridge Unit), with smoke, carbon monoxide, heat alarms and relays. Maximum 12 smoke alarms.
  • Listing: Listed to UL2034 Standard
  • Product Weight: .65 lbs.
  • Product Dimensions (LxWxH): 5.13 x 2.38 x 5.13 in.
  • 7 Year Limited Warranty
Product Specs
First Alert Wireless Interconnect Battery Carbon Monoxide Alarm - CO511B Videos
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Customer Reviews


Average score based on 3 reviews

Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5
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First Alert Wireless Interconnect Battery Carbon Monoxide Alarm - CO511B Reviews

Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5 - Reviewed: 01/05/2022 by David S

Nice features

I love the interconnection ability this model has.

Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5 - Reviewed: 02/10/2021 by Richard DelGigante

Carbon Monoxide and Smoke detectors

Easy to understand and program, loud enough to wake up the whole house up and perfect for anyone who doesn't want to or who can't hard wire these devices. One goes off and they all talk to each other to let you know what level the problem in on. Well worth it.

Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5 - Reviewed: 10/22/2018 by Judith Golab

Easy installation

Like that it talks to you with location!