Parents & Families
Protection for the rooms where the people you love sleep.
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Rated 4.8 (1,898)
Verified Reviews
· UL certified · Free shipping · Lifetime Warranty
Your carbon monoxide alarms were designed to stay silent at dangerous levels
And they can't show you what they're measuring.
If your home has a furnace, water heater or gas stove, carbon monoxide can build up without colour, smell or warning.
Your alarm won't sound at 30 PPM. It won't sound at 50. You could be breathing it for hours before it makes a noise. And the whole time, all you see is a green light.
And a green light can't tell you the air is safe. It can't even tell you if the sensor still works.
400+ lives lost to carbon monoxide poisoning
100,000+ people treated in emergency departments
Tolls for CO-related home incidents in the US for 2025 alone.
Rexorer Detector+ shows you the live CO concentration on a colour display and sounds an 85+ dB alarm when levels and exposure time reach warning conditions.
(1,898)
Verified Families
- UL Certified
- Free Shipping
- Lifetime Warranty
THE TECHNOLOGY BEHIND THE REASSURANCE
Two different threats need more than one ordinary alarm. Detector+ allows you to see more, understand more and rely less on guesswork.
Monitor Two Gas Threats With One Device
Detector+ uses an intelligent detection chip to continuously monitor carbon monoxide and natural gas.
See Live Readings — Not Just a Green Light
Watch the display cycle between carbon monoxide and natural-gas readings.
Understand What the Lights Mean
Separate POWER, ALARM and FAULT indicators help you distinguish normal operation from a warning or detected fault.
Hear the Warning When It Matters
An 85+ dB sound-and-light alarm activates when carbon monoxide or natural gas reaches alarm conditions.
Check More Than Gas Levels
View temperature and humidity alongside clear power, alarm and fault indicators.
Won't False-Alarm Whilst Cooking
Detector+ doesn't react to smoke or steam.
Plug In Without Tools or Wiring
Connect Detector+ to a compatible wall outlet, allow approximately 200 seconds for preparation and monitoring begins.
What Your Alarm Detects
Smoke alarms and carbon-monoxide alarms are essential—but in a home that uses gas, they do not cover every threat.
61% of U.S. households used natural gas in 2020.
Source: U.S. EIA
Smoke Alarm
Reacts to smoke. Blind to carbon monoxide and gas.
Static CO-only Alarm
Stays silent for hours while CO builds. No reading, no context. When it finally sounds, you can't see whether the level is real or the sensor is failing.
Rexorer Detector+
Shows a live CO reading on a colour screen. Alarms based on concentration and time. Plug in, no app. Also monitors natural gas, temperature and humidity.
Detector+ adds carbon monoxide and natural gas monitoring for broader protection in homes with gas appliances.
Certified 4-in-1 Detector. Shows You the Live CO Reading While Your Family Sleeps. Replaces a Green Light with Real Numbers.
Peace of mind
Family protection
Stop assuming safety
Safer home
18 units in stock
64 sold in the last 24h
Offer ends in
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Zach O.
"I thought the CO alarm in our new apartment already monitored all gases. I was wrong. Spent a few weeks smelling gas whilst my wife called me crazy. Now I can check both readings instead of depending on the green light and my own senses"
Lifetime Warranty
5 year warranty, covering the full life of the sensor.
Description
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Rexorer Detector+ monitors carbon monoxide and natural gas from one plug-in device.
Its digital screen shows the live readings one after the other, alongside room temperature and humidity. Separate POWER, ALARM and FAULT indicators help you understand the detector’s status without an app or subscription.
How to use + what's in the box
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Plug Detector+ into a suitable wall outlet and follow the placement instructions.
Use the TEST button regularly as part of your home-safety routine.
Inside the box:
- 1 × Rexorer Detector+
- 1 × Instruction manual
Features
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- Carbon-monoxide monitoring
- Natural-gas monitoring
- Live digital readings
- Audible and visual warning
- POWER, ALARM and FAULT indicators
- TEST button
- Temperature display
- Humidity display
- No Wi-Fi, app or subscription
Frequently Asked Questions
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What Does Detector+ Monitor?
Detector+ monitors both carbon monoxide and natural gas, while also displaying room temperature and humidity—all from one compact device.
Why Monitor Both Gases?
Carbon monoxide and natural gas are different threats requiring different sensors. Many standard alarms monitor only one. Detector+ helps close that gap.
How Does It Work?
Plug Detector+ into a wall outlet and it begins monitoring the surrounding air. The colour display cycles through live readings and sounds an alarm when a dangerous level is detected.
How many do I need, and where should I put them?
Place Detector+ in areas where your family spends time or near gas-powered appliances. Use multiple detectors across key areas of your home.
Is Detector+ UL Certified?
Yes. Detector+ is UL certified, giving you verified protection that has undergone recognised safety testing. Avoid cheap, uncertified replicas.
What Does the Lifetime Warranty Cover?
Your purchase is protected by our Lifetime Warranty. If your Detector+ develops a covered fault, contact our support team for help with a replacement.
Shipping & Returns
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Orders are shipped in 24-48h with tracking. For all info shipping and returns related visit our Shipping & Returns Policy.
Don’t Risk Cheap Replicas
Always check the CO & natural gas detector you purchase is UL certified. Cheap, uncertified replicas may look similar but do not pass the same quality checks.
Your family & home safety is not worth the risk.
Certifications & Compliance
Who It’s Built For
Who Should Own a Detector+?
If your home uses fuel-burning appliances and you’re responsible for keeping others safe—Detector+ is built for you.
Homes That Use Gas
For homes with a stove, boiler, furnace, water heater or fireplace.
Older Homes
Added reassurance around ageing pipes, fittings and appliances.
Renters & New Homeowners
Know what’s happening around appliances and safety systems you didn’t choose.
Ageing Parents & Loved Ones
Simple plug-in monitoring with clear readings they can easily check.
Real Homes. Real protection.
What Detector+ customers are saying
Nathan,
36
Verified Buyer
“I used to worry about the kids at night and wonder whether our old alarm covered everything. With Detector+ plugged in, I know it’s monitoring both carbon monoxide and natural gas while we sleep. That extra reassurance helps me rest easier.”
Samantha,
40
Verified Buyer
“our old alarm only showed a green light. I knew it had power, but I couldn’t see what it was detecting. With rexorer detectors I can finally check the live CO + natural gas readings on the screen. Being able to see that information gives me much more peace of miind.”
Samuel,
48
Verified Buyer
“I didn’t realise our old carbon monoxide alarm was only watching for one gas. I’d always assumed it covered natural gas too. Finding out about that gap made buying Detector+ an easy decision. Now we have these devices watching for both, with readings we can actually see. I feel much more confident about what’s protecting our home.”
Joe,
39
Verified Buyer
“my parents are elderly and live on their own so I’ve always worried about the gas appliances in their home. After getting Detector+ for ours, I bought another 4 pack for them. They understood the plug-in setup and can check the readings themselves. It’s reassuring for them, and for me.”
Richenda,
44
Verified Buyer
“An odd smell would come and go, and I kept wondering if I was imagining it. Now I can see the natural gas reading instead of relying only on my nose. I still take any gas smell seriously, but I feel much less left in the dark.”
TJ,
42
Verified Buyer
“We live near a gas facility- an occasional strange smell used to leave me wondering what was happening inside our home. Detector+ gives me co and natural gas readings I can see, which helps me feel less in the dark I’d still report any suspected gas leak, but I’m glad to have that extra information..”
Rachel,
43
Verified Buyer
“I kept putting off getting a natural gas alarm because I thought installing one would be a hassle. Detector+ simply plugged into an outlet, and I can see both the natural gas and carbon monoxide readings on its screen. It was such an easy step to take, and I’m glad I finally did.”
Placement and Bundle Guide
Choose a bundle, then see how Detector+ could fit into your home—or the homes of people you care about.
A Smaller Home, Two Places to Consider
Where could two go?
Start by looking at a suitable position outside your sleeping area. Then consider a second position in a living area where your household spends time. The illustration shows one way to begin planning; your outlet positions will determine where each unit can go.
More Rooms. More Places to Consider.
Where could four go?
Think about each level, separate sleeping areas, and the rooms your family uses most. Four units give you more flexibility to plan suitable positions throughout the home, especially when everyone isn’t gathered in one part of it.
A Home With More Places to Consider or More than One Home
Where could eight go?
When bedrooms are spread across different parts of the house, the kitchen and living room are separate, and your family uses more than one floor, there are more positions to think through. The 8-pack gives you flexibility to plan suitable locations near separate sleeping areas and throughout the lived-in parts of your home.
The silence
The green light
THE DANGER DOESN’T WAIT UNTIL MORNING
You Can’t Watch the Air While You Sleep. Detector+ Can
Furnaces, boilers, water heaters, gas stoves, fireplaces and attached garages can introduce carbon monoxide when combustion goes wrong. Ageing pipes, loose fittings and gas appliances can also allow natural gas to escape inside your home.
The Silent Killer
Carbon monoxide has no colour or smell. Early exposure can feel like tiredness, a headache or the flu—making it easy to miss while levels continue rising.
Why Symptoms Feel Like the Flu
Early carbon monoxide exposure can feel like tiredness, a headache, or nausea. Easy to blame on a long day. Easy to sleep through. By the time you realise it isn't the flu, the concentration may have been building for hours.
Who Is Watching While You Sleep?
Without proper monitoring, you are relying on smell, symptoms or an alarm that may cover only one threat. Detector+ monitors both carbon monoxide and natural gas, displays live readings and sounds when an alarm condition is reached.
Don’t wait for a smell, symptom or siren to become your first warning.
Frequently Asked Questions
Find more answers to common questions about Detector+
Does Detector+ replace my smoke or carbon monoxide alarms?
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Detector+ does not detect smoke, so keep your existing smoke alarms. It can also be used alongside your existing battery-powered carbon monoxide alarms to add natural-gas monitoring and visible readings.
Will cooking cause a false alarm?
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Activities near the detector can affect a gas reading. Never assume an alarm is false because you were cooking, and never use a displayed number to decide that the air is safe. Follow the safety instructions whenever an alarm sounds.
How do I check that Detector+ is working?
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Use the TEST button as directed in the instructions supplied with your unit, and pay attention to any fault indication. Testing the audible warning does not prove that every sensor will detect every hazard, so follow the model’s instructions for maintenance and replacement.
Can I use Detector+ in a rental or RV?
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It plugs into a compatible wall outlet without permanent installation, which may make it suitable for a rental. RV use should only be stated as supported if the current model’s instructions confirm it. In either setting, keep any alarms required for the property or vehicle.
What should I do if Detector+ alarms or I smell gas?
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Leave the property and follow local gas emergency instructions. Do not operate electrical switches or use Detector+ to investigate a suspected leak. Contact the gas emergency service from a safe location.
Is Detector+ certified?
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Yes. Detector+ is presented with UL and CSA certification marks, alongside UKCA, CE, FCC and RoHS compliance marks. You can see them in our Certifications & Compliance section.
What does the lifetime warranty cover?
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Our Lifetime Warranty covers Detector+ for the full five-year rated life of its sensor, starting on the date of delivery. If a fault caused by defective materials, components or workmanship develops during that period, we’ll send you a replacement at no cost. This includes faults with the sensor, display, alarm or TEST button.
To make a claim, email hello@rexorer.com with your order number, a brief description and a video showing the fault. See our Refund Policy for the full warranty terms and exclusions.
Doesn’t my current carbon monoxide alarm already detect natural gas?
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A CO-only alarm detects carbon monoxide, not natural gas. Detector+ monitors both gases and shows their readings on its display.
How many Detector+ units do I need, and where should I place them?
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That depends on your home’s layout, floors and the rooms you want to monitor. One unit should not be assumed to cover an entire property. Choose suitable outlets in your priority rooms and follow the placement instructions supplied with Detector+, as the right position can vary by room and gas.
Detector+
100 Day Peace of Mind Guarantee
If you don't feel more confident about your home's CO protection within 100 days, we'll refund your purchase. No questions.
Lifetime Warranty
Your Detector+ is protected against covered manufacturing faults for its stated service life, subject to the warranty terms.
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Certified
Free Shipping
Rated 4.8/5 by 1,898 as of August 2026
Lifetime Warranty
Your Detector+ is protected against covered manufacturing faults for its stated service life, subject to the warranty terms.
CLAIM NOW
Certified
Free Shipping
Rated 4.8/5 by 1,898 as of August 2026
Rated 4.8/5 based on 1,898
More Reviews
✓ All reviews are verified by our system
01 September 2026
Saved our life
Hard to believe such a small device and number on a screen can be the difference between waking up one day or not... This was the reality for us on Aug 29. Turns out the gas dryer vent had come off behind the wall. Thank the universe for rexorer detector. It beeped when levels were unsafe and we managed to spot the leak early!
Mark
Verified Buyer
Purchased: 8-Pack, Black
14 September 2026
Helps my anxiety and sleep
Had super bad night time anxiety whilst using my gas heater, couldnt sleep thinking id not wake up due to poisoning so bought a 2 pack one for where i sleep and one on the other side of our kitchen. Now i can sleep knowing if anything goes wrong ill be alarmed.
Sammy O.
Verified Buyer
Purchased: 2-Pack, White
07 January 2026
Had to buy these after having baby
Just had my first child and I was so paranoid our gas heater would leak CO and affect her badly so i bought a 4 pack and place it beside us to monitor us when we sleep and now i feel so much better and less anxious
Cathy S.
Verified Buyer
Purchased: 4-Pack, White
02 June 2026
For my mother <3
My mother is 73 and lives alone in Anaheim. I kept reading stories about CO poisoning and gas explosions and realised she had no protection or alarms. Bought a 2-pack for her and took them over whilst visting. Plugged in and set up in under a min. I call her frequently and she has fallen into habit of checking the numbers so i am so relieved. Another weight off my shoulders thank god.
Jackson
Verified Buyer
Purchased: 2-Pack, White
27 July 2026
Old one had random chirps
My old one started chirping and i had no idea why since it did not actually show what it was reading... Real alarm? low battery? end of life?.. There was no way of telling, bit useless and stressful if you ask me. This one on the other hand actually shows you the live reading so if for whatever reason it does go off at least you can get it to prove it to you before freaking out.
Kyla B.
Verified Buyer
Purchased: 8-Pack, Black
03 August 2026
Good Co / natural gas detector
Had no idea my CO alarm didnt detect gas leaks until I saw something about it online. We have gas appliances so that freaked me out. Plugged this in and you can actually see the numbers on the screen which is way more reassuring than just a green light doing nothing. It pick up a small reading while cooking, i checked, and it went right back down. feel much better having it there.
Rosanagh C.
Verified Buyer
Purchased: 4-Pack, White
07 September 2026
Safer parents who are elderly
Bought them for my older parents because they kept leaving the stove on, and i was worried they were going to burn the house down.
Kaine J.
Verified Buyer
Purchased: 2-Pack, Black
09 July 2026
Peace of mind
Installed 4 detectors in our new apartment and 6 months later i still regularly test and all good with no false alarms
Zacharia B.
Verified Buyer
Purchased: 4-Pack, White
24 June 2026
Digital display
The best feature is the digital display. My old detector just had a green light. i never knew if it was actually working or just powered on. Seeing 0 PPM gives me real peace of mind.
Joel E.
Verified Buyer
Purchased: 4-Pack, White
25 August 2026
For mother in law
Helps us support my mother in law to be independent and gives us so much peace of mind knowing that if anything goes wrong it will be monitoring 24/7
Jerome S.
Verified Buyer
Purchased: 8-Pack, Black
02 September 2026
Customer service gave us the wrong restock dates but refunded us the difference
I wanted to buy a 4 pack and it was sold out so i had to buy 2, 2 packs, i sent an email to them and they were kind enough to refund me the difference. also the product is high quality and has not gone off yet, so i guess thats good for us haha
Julia K.
Verified Buyer
Purchased: 2-Pack, White
29 August 2026
Husband set this up in seconds
My husband set this up in seconds after I bought the Detectors for our house plus our parents. Super easy to read and high quality
Emma L.
Verified Buyer
Purchased: 8-Pack, Black