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Ships within 48 hours · Estimated delivery Oct 31 - Nov 5
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Description
Hardwired Interconnected Photoelectric Smoke Alarm, Ceiling Mount, ADA Strobe with Battery BackupThe Gentex 7139CS C is a photoelectric smoke alarm designed for residential and commercial residential applications, including homes, apartments, hospitals and hotels motels. The 7139CS C is designed to give reliable early warning of the presence of smoke where both audible and visual alarms are required. The 7139CS C is ANSI UL 217 and ANSI UL 1971 listed and is compliant with IBC IFC Standards as well as NFPA 72. California residents see Prop 65
The Gentex 7139CS-C is a photoelectric smoke alarm designed for residential and commercial residential applications, including homes, apartments, hospitals and hotels/motels. The 7139CS-C is designed to give reliable early warning of the presence of smoke where both audible and visual alarms are required. The 7139CS-C is ANSI/UL 217 and ANSI/UL 1971 listed and is compliant with IBC/IFC Standards as well as NFPA 72.- California residents
- 120 VAC with 9VDC battery back-up
- 90dBA temporal 3 evacuation piezo horn with a 3100Hz (nominal) horn frequency
- ADA compliant 177 candela strobe (ANSI/UL 1971)
- Ceiling mount
- On-site washing program
- Nominal 2.5% sensitivity
- 3 position test switch
- Form C contact included
- Tandem interconnect with all Gentex tandem capable alarms
- Low or missing battery indicator
- Relays operate on battery back-up and will activate from tandem wire
- Quick disconnect wiring harness
- Fully insect screened
- 1 year warranty from date of purchase
Features
| Item Weight | 1.75 |
| Commercial/Residential | Commercial,Residential |
| Voltage (volts) | 120 |
| Fixed or portable | Fixed |
| Connector/Contact Type | 4-Wire |
| Alarm Type | Smoke |
| Alarm/Detector Features | Battery Back-Up,Interconnected,Strobe Light,Tamper Resistant |
| Pack Size | 1 |
| Power Source | Hardwired |
| Returnable | 180-Day |
| Alarm Sensor Type | Photoelectric |
| Included | Batteries,Battery Back-Up |
| Product Height (in.) | 5.5 |
| Product Depth (in.) | 4.75 |
| Product Width (in.) | 5.5 |
| 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
4.6 ★★★★★
Based on 20 reviews
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Product Reviews
★★★★★ 5
Partition Wall
Color: Black, Size: 8' Wide x 30" Tall, Color: Black, Size: 8' Wide x 30" Tall
I ordered this to do a room divider for my grandkids can have there own space while sharing a room it gives the privacy the wall is very sturdy and heavy was easy to assemble the quality is great able to use individual or together for longer division great value for the money
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Reviewed in the United States on March 3, 2026
★★★★★ 5
Very pleased
Color: Black, Size: 8' Wide x 30" Tall
This works great, and I find it to be very effective at soundproofing. The hinge is good quality, and it rolls up easily. It is slightly on the heavier side, but that is to be expected considering its larger size. The materials used to make it are top quality, and it will last a long time.
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Reviewed in the United States on February 2, 2026
★★★★★ 5
Trying to limit the sound from the basement.
I still am in process of evaluating the function of these but from an early assessment they do seem to help take the noise down a peg. I have installed these between the joists in my basement so that as my kids get ramped up playing video games it could possibly help prevent the sound from rattling the house. I did not need to use the sticky side for this as I was able to slide them in place around other things to hold them still. With four panels I have ok coverage of the area and if they continue to prove effective I will get more to fill out the area even more. They appear well made and of good size but I am not an expert in sound absorbing materials. Still so far so good.
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Reviewed in the United States on March 31, 2025
★★★★★ 4
Not like egg-crate foam, but these look nice and help with noise
Everyone is putting these on the walls. I opted for the ceiling.
Back in the middle of the pandemic, I converted a corner of a back-room/work-room into a home office space for my work-from home activities. It's a basement, and so it's concrete walls, but I did my best to put things on or in front of the concrete to dampen sound. But I didn't spend any time thinking about the open-rafter ceiling, which is really just the main-level floor. That's where these (and a couple other) sound-reducing tiles came in.
I tacked some packs of these overhead, and immediately noticed a fair reduction in noise in my "office," as well as noise from upstairs. But they also had the effect of reducing my ceiling height, making it easier to warm the space when it's cold. And they look good doing it, providing a pretty nice ceiling.
These tiles are not very thick, not like true acoustic wall materials. So you're not going to get the sound dampening of egg-crate foam. But they do offer some degree of reduction in ambient noises. And they don't cost a lot. Overall, I'm pleased and think I need to order more for some other areas of the room.
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Reviewed in the United States on July 16, 2025
★★★★★ 2
Not sold as stated
Only received 4 not 8 pack as stated. I had to recreate. Materials was ok. And easy to install
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Reviewed in the United States on May 23, 2026