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Ships within 48 hours · Estimated delivery Jul 23 - Jul 28
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Description
FireX Hardwire Smoke Detector with 9-Volt Battery Backup, Adapters, and Photoelectric SensorThe Kidde FireX P12040 Hardwire inter connectable Photoelectric Smoke Alarm with Battery Backup can act as a stand alone unit or can be integrated into an existing electrical system. This unit sounds an early warning to alert you and your family of the presence of visible fire particles detected by the alarm's photoelectric sensor. Powered by 120 Volt AC, this alarm protects you, your home and the people you hold dear even during power outages, thanks
The Kidde FireX P12040 Hardwire inter connectable Photoelectric Smoke Alarm with Battery Backup can act as a stand-alone unit or can be integrated into an existing electrical system. This unit sounds an early warning to alert you and your family of the presence of visible fire particles detected by the alarm's photoelectric sensor. Powered by 120-Volt AC, this alarm protects you, your home and the people you hold dear even during power outages, thanks to a 9-Volt battery backup. A power harness facilitates an easy installation and a simple push of a button activates this alarm's test and hush features.- Utilizes photoelectric sensor to detect visible fire particles
- Sounds an early warning when smoke or fire particles are detected
- Many cities and states have created legislation requiring smoke alarms or specific types of smoke alarms in various settings. Certain laws also specify when homes need carbon monoxide alarms or other safety products. Understanding your local requirements can help you keep your home safe from the dangers of fire.
- 120-Volt AC, 2-wire connection
- Push-button operation tests alarm functionality
- 9-Volt battery backup provides protection during power outages
- 9-Volt battery included (21025730)
- Pull tab keeps battery fresh until initial activation
- Power harness makes installation fast and easy
- Compatible with Kidde, FireX, Code One and Sentinel products
- Smoke detector utilizes a photoelectric sensor to detect fire hazards and sounds an 85 db alarm when a hazard is detected
- Dust cover protects sensor during construction
- Kidde offers a full range of 120-Volt AC wire-in life safety products with interconnect capability to provide the most immediate and complete system available. When any one interconnected alarm is triggered, all interconnected alarms within the home sound an immediate warning
- *Check with your state and local fire and Building/Safety codes for specific information regarding smoke & Carbon Monoxide Alarms.
- UL/CSFM Ref. Kidde Part PE120
Features
| Item Weight | 0.98 |
| Commercial/Residential | Commercial,Residential |
| Voltage (volts) | 120 |
| Connector/Contact Type | 2-Wire |
| Fixed or portable | Fixed |
| Alarm/Detector Features | Battery Back-Up,Hush Feature,Interconnected |
| Pack Size | 1 |
| Alarm Type | Smoke |
| Power Source | Hardwired |
| Included | Batteries |
| Returnable | 180-Day |
| Alarm Sensor Type | Photoelectric |
| Product Height (in.) | 5.6 |
| Product Depth (in.) | 1.55 |
| Product Width (in.) | 5.6 |
| Certifications and Listings | UL Listed |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 10 reviews
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Product Reviews
★★★★★ 4
3 inches plus!
Color: Black, Size: 6FT
It works well BUT you will need a little more than a three inch opening. I ordered this as a replacement for a plain plastic grommet. I had to buy an attachment for my drill to make the hole a tad bigger and smooth out any bumps in the hole.
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Reviewed in the United States on July 19, 2025
★★★★★ 5
Quality Product
Color: Black, Size: 6FT
Easy to install and comes pre-wired. This works as advertised and is easy to add to a new furniture build or retrofit into existing furniture.
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Reviewed in the United States on January 12, 2026
★★★★★ 5
Great for price
Color: Black, Size: 6FT
Worked great in the predrilled spaces in retail environment on counters. Had to do minor shaving of the existing holes but worked great after that. Only took 3 mins to correct. Well hidden and flush with counter.
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Reviewed in the United States on February 23, 2026
★★★★★ 1
Worthless
Color: Black, Size: 6FT
Would leave 0 stars if possible.
Things thing f****** suck!
Don’t buy them, don’t listen to the positive reviews. Don’t waste your money!
They don’t work. Charging ports shut off after you unplug your device. Have to unplug and replug in charging cables and ac plugs everytime you want to use them or else they won’t work.
Cheap unreliable product that matches the cheap price.
Spend $5 more and get a product that actually works!!!!
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Reviewed in the United States on February 19, 2026
★★★★★ 5
Perfect for behind the sofa tables.
Color: Black, Size: 6FT, Color: Black, Size: 6FT
Bought 2 for behind the sofa table. We now have a multifunctional table with charging ports and electrical sockets. The couch blocked the outlets, and now we are set. Basically, it's not only for desktop use....be creative :)
The pic shows holes cut in the table for easy insertion.
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Reviewed in the United States on December 11, 2025