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Hardwired Photoelectric Smoke and Carbon Monoxide Alarm with Battery Backup

The First Alert SC7010B Hardwired Combination Smoke and Carbon Monoxide Alarm with Battery Backup delivers both smoke and carbon monoxide detection in a single unit. Equipped with a photoelectric smoke sensor and an electrochemical CO sensor, it accurately detects smoke produced by smoldering fires and carbon monoxide leaks from multiple sources. If a threat is detected, the alarm emits a spread spectrum horn tone that is designed to be heard by people with age-related hearing loss.

Photoelectric Sensor Warns of Smoldering Fires

The First Alert SC7010B alarm comes equipped with a photoelectric sensor to provide the earliest possible warning of fire. The sensor is optimized to detect larger smoke particles produced by smoldering fires, such as those caused by unextinguished cigarettes. It also distinguishes between real threats and smoke/vapor produced during showering, cooking, and other everyday activities, helping minimize the number of false alarms. This makes the alarm an excellent choice for installation in kitchens, near fireplaces, outside bathrooms, and in other areas that are prone to producing steam and smoke.

Optipath 360° for Comprehensive Detection

Optipath 360° technology enhances the alarm's detection abilities by providing the sensor with 360° access to the layer of air around the ceiling. This allows the sensor to detect smoke, combustion particles, volatile components, and other fire signatures in the surrounding air more easily.

Electrochemical Sensor Reliably Detects CO

The First Alert SC7010B Smoke and Carbon Monoxide Alarm uses an advanced electrochemical CO sensor to detect elevated carbon monoxide levels from a variety of sources, such as faulty fuel-burning appliances, blocked chimneys, and cars left running in the garage. The alarm is also microprocessor-controlled to help minimize false alarms. When CO is detected, the carbon monoxide detector sounds an alarm to warn you of the threat. Carbon monoxide can't be seen, smelled, or tasted in the air, and it is the leading cause of accidental poisoning deaths in America. By placing carbon monoxide detectors on every floor of the home and in each sleeping room, you can help protect your family from the danger of carbon monoxide.

Spread Spectrum Horn Tone Warns of Danger

If the alarm detects smoke or elevated carbon monoxide levels, it alerts you to danger with a spread spectrum horn tone. This loud tone has a lower frequency that can be heard more easily by people with normal age-related hearing loss.

Easy to Install and Operate

The perfect mount system makes aligning and installing the alarm easy, while the tamper-resistant locking pins keep the alarm secure. A one-touch silence/test button makes it easy to test the detector or mute it in the event of a false alarm. And thanks to the end-of-life timer, you can know exactly when it is time to replace the alarm. AC-powered smoke alarms must be installed in accordance with all local electrical codes.

Battery Backup for Detection During a Power Outage

This smoke alarm is designed for hardwired installation, but it also features a battery backup that helps ensure continued functionality in the event of a power outage. The unit comes with two AA batteries.

Photoelectric Smoke and Carbon Monoxide Alarm SC7010B

How to Install First Alert SC7010B Hardwired Smoke & Carbon Monoxide Alarms:

In this guide, we'll be showing you how to install First Alert Hardwired Smoke and Carbon Monoxide Alarms. Here are a few items you'll need before starting the installation process: Needle-nose pliers or utility knife, screwdriver, wire stripper, wire nuts and a ladder.

Hardwired Smoke or Carbon Monoxide Alarm Requirements:

  • 120V household electrical circuit (unswitched 120VAC)
  • Standard wiring junction box to a 4 in. (10 cm) size, on either the ceiling or wall
  • Selecting an appropriate location to install your smoke and carbon monoxide alarms (see below guidelines for additional information):
    first alert smoke alarm install guide
    • When installing an alarm on the wall, the top edge of an alarm should be placed between 4 in. (100 mm) and 12 in. (300 mm) from the wall/ceiling line.
    • When installing an alarm on the ceiling, place the alarm as close to the center as possible.
    • In either case, install the alarm at least 4 in. (100 mm) from where the wall and ceiling meet.
    • First Alert Smoke Alarm FAQs
    • First Alert Carbon Monoxide Alarm FAQs

Connecting First Alert Hardwired Alarms to 120V Wiring

To begin, turn off power at the junction box and connect your alarm to the building's electrical wiring.

  1. Locate the junction box and turn off power
  2. Remove the power connector from the new alarm's packaging
  3. Using wire nuts, attach the hot (black), neutral (white), and interconnect (orange) wires
first alert smoke alarm hardwired install guide
first alert wired in smoke alarm install guide
Black wire
Attach to black wire on power connector
White wire
Attach to white wire on power connector
Orange wire

Standalone (single-station) alarm: This wire is not needed; tuck the orange wire into the junction box.

Interconnected alarms:

  • Strip 1/2 in. from the orange wire on the connector
  • Use a wire nut to attach it to the orange wire in the junction box (see image below).

Mounting First Alert Hardwired Alarms

  1. Secure the mounting bracket to the ceiling or wall using screws (included in the package)
  2. Insert the power connector into the plug on the back of your alarm
  3. Tuck any hanging wires into the junction box
  4. Position the base of the alarm onto the bracket and turn it clockwise until it's secured
  5. Remove the pull-tab to activate the backup battery
first alert carbon monoxide alarm install guide
first alert smoke and co detector install guide

Installing Additional and/or Interconnecting First Alert Hardwired Alarms

If you are installing more smoke or carbon monoxide alarms, you'll want to repeat the process throughout the building. Interconnected smoke and co alarms must meet all requirements:

  • The same fuse or circuit breaker must power all interconnected alarms.

  • Up to 18 compatible detectors can interconnect, with a limit of 12 smoke alarms.

  • The total length of wire interconnecting the alarms should be less than 1,000 ft. (300 meters). This type of wire is commonly available at hardware and electrical supply stores.

  • All wiring must conform to all local electrical codes and NFPA 70 (NEC). Refer to NFPA 72, NFPA 101, and your local building code for more information.

  • Interconnect wiring diagram:

first alert alarm install guide

If you have any doubts or reservations about these interconnect requirements, please contact an experienced electrician to install your wiring and hardwired alarms.

Restoring Power and Testing Hardwired Alarms

Once you've installed your hardwired alarms, you'll want to restore power to the junction box. Under regular operation, the power indicator light on the alarm will shine/blink to indicate that it is receiving AC power.

Here's how you can test standalone or interconnected alarms:

  • Standalone Alarms: Press and hold the Test/Silence button until the unit triggers an alarm.

  • Interconnected Alarms: Press and hold the Test/Silence button until the first unit triggers an alarm. All interconnected detectors should sound off. Repeat this process to test each alarm in the interconnected series.

Why Is My Smoke Alarm Beeping?

Smoke alarms can beep for to the following reasons:

  • Low Battery: This is the most common cause. Most smoke detectors use a chirping sound (usually a single beep every 30-60 seconds) to warn you that the batteries are running low and need to be replaced. Don't wait until the alarm is silent - replace the batteries right away to ensure your smoke alarm continues to function properly.
  • End of Life: Smoke alarms don't last forever. If your smoke detector is beeping constantly or in a different pattern than the low battery chirp, it may be nearing the end of its intended lifespan and should be replaced altogether.
Product Details
  1. Smoke particles of varying number and size are produced in all fires. For maximum protection, use both ionization and photoelectric sensing technologies. Ionization alarms are generally more sensitive to fast flaming fires and photoelectric alarms are generally more sensitive to smoldering fires.
Product Specs
Combo Smoke & Carbon Monoxide Alarms
Product Manuals

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SC7010B customer reviews

Overall Rating

26 Reviews
26 customers recommend this product
First Alert Hardwired Photoelectric Smoke and CO Alarm with Battery Backup Reviews
michael b
November 9, 2022
Verified Purchase
wake up the dead!!!!

easy to install especially if you already have the newer bases installed-also like the AA cells replacing the older 9 volt-the horn on these CO detectors should wake up the dead-it is horrible sounding-just what you want...

Hans Schoefberger- Austria
January 29, 2022
A very good device

This device was easy to install. Instruction good to unterstand.

David A
September 7, 2021
Verified Purchase
First Alert smoke/CO2 Alarm

The unit was very easy to order from the First Alert store. I had originally tried to purchase replacement units from local retailers who did not carry my particular model in their inventory. The on-line ordering process was fast, easy, and efficient. I installed the unit with the instructions included with the alarm which I found particularly helpful because they explain the meanings of the beep sequences during alarm testing.

Michael Levasseur
February 6, 2021
Verified Purchase

I already had this product in my house, very easy to install. Unplug the old one plug in the new one they work awesome. Purchased the 12 pack used 6 in my house and still have 6 in reserve. I recommend this product. AWESOME

John Fresina
February 4, 2021
Verified Purchase
Simple and easy

I ordered new smoke/Co alarms from First Alert. The ordering process was simple and easy. Once they arrived I installed them and it was simple and easy.

Susan Tourtillotte
September 30, 2020
Verified Purchase
Feel Protected

This is our second First Alert Hardwired Photoelectric Smoke and Carbon Monoxide Alarm with battery backup-SC7010B. The first one needed replacing after 7 years! We like the product and found it easy to install. The personal service from folks at First Alert in clarifying was outstanding!

November 7, 2019
Verified Purchase

Works great

Doug Jacques
September 1, 2019
Verified Purchase

very good product - I bought a dozen of the 7010B & SC701B I also bought 15 of them last year have to replace very 8 years in apartment building it seam because I'm buying them direct it would be a lower price per unit - just saying

Dennis Schwerd
January 9, 2019
Verified Purchase
New smoke and carbon monoxide

Very satisfied with my new purchase

Doug Jacques
September 9, 2018
Verified Purchase

very good product

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