Skip to content

  Home > Products > Detectors > Wireless Detectors >

First Alert SCO500B Battery Operated Wireless Combination Smoke and Carbon Monoxide Alarm with Voice Location


Owned and Operated by FIREFIGHTERS!
Our Price: $34.95 **SALE PRICE** Free 2-3 Day Shipping-ALL ORDERS SHIP IN 24HRS

All units are manufactured within the past year! This Battery Operated Wireless Interconnect Combination Smoke and Carbon Monoxide Alarm with Voice Location is about the best you can get on the market. This is literally what I have in my own home. This alarm is a photoelectric smoke alarm, a Carbon Monoxide alarm, a wireless alarm and it has voice activation. With the First Alert Wireless Interconnected alarm you can connect multiple smoke and carbon monoxide alarms together wirelessly to create a strong network that will protect you and your family. The offers an exclusive, innovative voice warning system with location alert. When an alarm is sounded, the network will alert you which room caused the potential hazard so you can know where to extinguish the problem. The voice system will say directly where the problem is when the alarm sounds off.
Photoelectric detectors alarm from slow burning smoldering fires much faster than ionization alarms. This is how the majority of house fires start.
The Carbon Monoxide alarm is built in so everything is connected which is the most important thing. A smoke detector puts off about 90 Decibels and the average human wakes up from about 70 Decibels. 1 single closed door can reduce the decibel level by 20 decibels. So if you have one on the floor below you the sound is pretty much non-existent. Children and Seniors take much higher than 70 Decibels to be awoken so now you can see the problem. Now you could call an electrician out to rewire your home to put the cheaper hardwired detectors in but you are going to end up paying $1200-$1500 dollars for them to run all the wires. These alarms solve that issue and go one step furthur. These are the only alarms on the market that will tell you which smoke detector is alarming. If the alarm in your basement is going off then your master bedroom will alarm and say "Smoke in Basement". If there is a Carbon Monoxide emergency it will actually say "Carbon Monoxide in Family Room, Carbon Monoxide level is 500 PPM(parts per million). This is incredibly important so you know where to go and where not to. I offer free phone support for the programming and placement of these alarms. I have installed these in hundreds of homes so I can fill you in on some tips and tricks when you are getting them all set.
Wireless Interconnect enabled alarm
Wireless battery Combination Photoelectric Smoke & CO Alarm
Exclusive! Voice alarm with programmable location. Programmable with up to eleven locations.
Single button test/silence
Two silence features - can silence the low-battery chirp for up to eight hours or temporarily silence an unwanted nuisance alarm
RF Interconnect: reliable and secure radio frequency communication between alarms. 915 MHz frequency with 65,000 security codes and 3 channel frequency hopping.
Optipath 360 TechnologyTM - patented technology provides 360 degrees of direct access to the smoke sensor.
Perfect Mount - allows for easy alignment of alarm
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 indentifies unit in low battery condition.
End of Life Signal provides audible notification alarms needs to be replaced
7-Years Limited Warranty
Model/SKU #: SCO500, SCO501CN-3ST
Weight 8.4 oz
Operating Voltage Two 1.5V AA Batteries
Humidity Range 10% to 95% relative humidity (RH)
Smoke/CO Sensor Photoelectric/Electrochemical
Listing ETL to UL 217 and 2034 standards
Comes in box not plastic
First Alert Wireless Interconnect Setup

Average Rating: Average Rating: 5 of 5 5 of 5 Total Reviews: 198 Write a review »

  0 of 0 people found the following review helpful:
5 of 5 Excellent transaction March 19, 2020
Reviewer: Gary Smith from Humble, TX United States  
This is the first order with Smoke Alert, and they delivered ahead of expectations. Great experience

Was this review helpful to you?

  0 of 0 people found the following review helpful:
5 of 5 Excellent Service and Price January 18, 2020
Reviewer: Sherilyn Anderson from Fort Mill, SC United States  
I ordered 2 of the First Alert SCO500B alarms.  The price was better than I could find anywhere else.  Received it quickly.   Excellent company.  Highly recommend you purchase from them!!

Was this review helpful to you?

  1 of 1 people found the following review helpful:
5 of 5 Quality and Price December 31, 2019
Reviewer: Thomas Pavlock from Oregon, OH United States  
I had been looking for this smoke/carbon monoxide alarm for several weeks.  I checked the usual places, E-Bay, Amazon and other sites.  I am really glad I stumbled upon SmokeAlert.  They gave me the exact product I was looking for, and at a price that I could not pass up. The total price was almost $40.00 less than I could find anywhere.  I would recommend them to anyone who is interested in home/business protection items.

Was this review helpful to you?

  1 of 1 people found the following review helpful:
5 of 5 Programming (linking) suggestion December 28, 2019
Reviewer: Tom from OH United States  
These five units replaced a previous set of SCO501CN-3ST units that had timed out over the seven year use limit.
The manufacturer says to program (link) the units all from one unit.  IE: 1-2, 1-3, 1-4.  I disagree.  I suggest that you program them in series as you walk around the house for best signal reception.  IE: 1-2, 2-3, 3-4.
Also, beware of internal wall wiring that will shield the signal.  That is, I originally placed units on the wall above line voltage electric thermostats but the internal wiring caused me to move the units to over doorways.

Was this review helpful to you?

  0 of 0 people found the following review helpful:
5 of 5 December 11, 2019
Reviewer: Dean Jordan from Castle Creek, NY United States  

Was this review helpful to you?

View All Customer Reviews