Protect your family from the silent killer
★★★★★
4.8 from 2,127 families
Not right for your home? Return it within 100 nights for a full refund.
It doesn’t wait until the air is dangerous. You see the number rise from zero — and act before a late alarm becomes the first sign of trouble.
Your alarm is built to stay silent until it’s almost too late.
Carbon monoxide harms the body long before a standard alarm reacts — and it can legally wait hours to sound. That’s why seeing the live number matters.
The detector with a display.
Plug it in, see the live number, and know at a glance that you’re safe — or act fast if you’re not.
See CO from 0 PPM — not a yes/no light
Watch the live number climb long before an old alarm would beep.
Plugs in anywhere in 30 seconds
Any standard outlet. No ladder, tools or electrician — one per floor.
Won’t false-alarm when you cook
Reads carbon monoxide and gas — never smoke or steam.
4 sensors in one device
CO, gas, humidity and temperature together. Most detectors catch only one.
100-night risk-free trial
Not right for you? Full refund, return shipping covered — plus a lifetime warranty.
You can’t see it. You can’t smell it. And it doesn’t hurt.
CO leaks from furnaces, water heaters and stoves — and a dead sensor keeps glowing green anyway.
No color, no smell, no warning — and a standard alarm can stay silent until it’s already dangerous.
Real families. Real protection.
Worth it just for week one
Bought this after my brother-in-law's family had a scare. Week 1, Tuesday morning, I see 23 PPM in the basement. My $40 First Alert upstairs? Quiet as always. Cracked heat exchanger on a 9-year-old furnace. Just get the 4-pack. Don't mess around with this stuff.
For my dad
My dad is 78 and lives alone in Pittsburgh. Bought him the 2-pack and drove over to plug them in myself. Now when I call him Sundays the first thing I ask is what's the number say dad and he reads it to me. 0 every time. Silly little ritual but it makes me feel better.
Caught a problem before it caught us
Reading 12 PPM in the laundry room three days after installing. Turned out the gas dryer vent had come loose behind the wall. No symptoms yet, no beeping alarm — just a number on a screen that told us something was wrong. Plumber said another week and we'd have been in the ER. Buy this.
Replaced all 3 of my old detectors
I had three Kidde plug-ins and didn't know if any of them actually worked. After reading about the 5–7 year sensor life thing I tossed all three and replaced with the 4-pack. Now I can glance at the screen every morning and know it's working. Worth every penny for the peace of mind.
For our new baby
We have a gas furnace and a baby on the way. My OB literally told us at our last appointment to upgrade our CO detectors. The 4-pack arrived in 2 days and my husband had them all plugged in before dinner. Knowing the number is 0 right outside the nursery lets me sleep.
Good, not great — being honest
Had this 2 months. The live PPM readout is genuinely useful and way easier to read than my old Kidde. Only gripe: the alarm is a bit quieter than my old one when you hit test — worth knowing if you have a big house. Build quality is fine, not premium. Would still buy again.
What’s included +
- ✓ 2 Sentivo Detector™ detectors
- ✓ Free US shipping
- ✓ 100-night money-back trial
- ✓ Lifetime warranty
What’s included +
- ✓ 4 Sentivo Detector™ detectors
- ★ Free placement guide
- ✓ Free US shipping
- ✓ 100-night money-back trial
- ✓ Lifetime warranty
What’s included +
- ✓ 8 Sentivo Detector™ detectors
- ★ Free placement guide
- ✓ Free US shipping
- ✓ 100-night money-back trial
- ✓ Lifetime warranty
At Primo Goods, we make sure our customers feel safer — or we refund 100% of their purchase. We’re so confident you’ll finally sleep knowing your family is protected that we’ll bear all the risk.
Got Questions? We got you covered!
How is this different from the detector I already own? +
Where do I put it? What height? +
How many do I need? +
Will it false-alarm when I cook? +
How do I know the sensor still works? +
What if it doesn’t work for me? +
Can I use it in a rental or RV? +
How do I contact support? +
Real humans, usually within the hour during business hours. Pick whatever’s easiest:
Is Sentivo Detector™ the same as Airguard? +
Real questions. Real people.
2,847 comments · sorted by Top
Can someone vouch for this? Saw the ad three times today and my wife is pregnant so I’m not taking any chances with our gas furnace. Is it actually legit or just another drop-ship detector?
@Marcus works awesome man. Ordered the 4-pack after my brother-in-law had a scare with his water heater. One per floor + one in the hallway outside the bedrooms. Reads 0 PPM consistently. Get the 4-pack — you’ll want one near the nursery.
Seconding Dan. Had mine 2 months. Quiet, no false alarms, and the digital readout is the reason I bought it over the beeper ones. Congrats on the baby
We have a gas stove and I’ve been paranoid ever since I read that study last year. My regular alarm has NEVER gone off but I don’t feel safe. Does this actually show the low levels you can’t smell?
Yep. Got one near our gas stove. Reads 2–6 PPM when the burners are going and drops back to 0 within 10 min of turning the hood on. Honestly kind of eye-opening. We run the hood every time now.
32 years retired from the fire service. Responded to more CO calls than I can count. The digital PPM readout is the right idea. Standard alarms only trigger above 70 PPM sustained. By then the damage is starting. Bought the 4-pack for my kids’ houses. Sleep better knowing it’s there.
HVAC tech here. Saw one of these in a customer’s basement last month, didn’t think much of it. Two days later it caught a back-drafting flue on a tankless water heater. Now I recommend them on every gas appliance job.
Anyone with the 8-pack got a placement diagram for a 2-story + basement? Where do you put #5 through 8
genuine question, is this just a CO detector with a screen? what’s the point of the screen if it still alarms at the same level
screen shows the live PPM. lets you see if something’s slowly building before it hits the alarm threshold. mine showed 8 ppm one morning, traced to a gas fireplace pilot. fixed it before anyone got sick. that’s the point
Ordered the 4-pack after my friend’s son got hospitalized from CO last winter. They had a Kidde from 2019 that never went off. Doctor said it was probably below the alarm trigger for hours.
Got this for my mom in Florida. She’s 73, lives alone, gas stove. Now she calls me Sunday mornings to tell me “the number is still zero, Tommy.” Worth every penny just for that.
RV owner here. Two of these in our rig. Generator vent issue on a trip last fall — Sentivo Detector™ at the back was reading 15–20 ppm while we slept. Built-in CO alarm never made a sound. Killed the genny, opened up, everyone was fine. This thing saved us.
Furnace tech, 18 years in. The 5–7 year sensor life on standard CO detectors is real and most people have no idea. Tested 12 detectors in customer homes last month, 4 were dead. Owners had no clue.
I’m 68 and the big green number is the reason I bought it. Can read it from across the room even without my glasses. Whoever designed this with seniors in mind, thank you.
How is this not on Amazon? Kinda sus
Hey Daniel — we sell direct to keep prices honest and ensure every unit ships from the latest production batch. Amazon resellers often unload aged inventory and the CO sensor degrades on the shelf. We’re the only authorized seller.
The live readout literally caught a problem last week. 19 ppm on the one near the mudroom. Realized I’d left the car idling in the attached garage longer than I thought. A regular detector wouldn’t have made a sound. This one showed me a problem I created.
Showing 3 of 2,847 · 94% of commenters recommend Sentivo Detector™
If you burn anything, this is for you.
Parents
Peace of mind in every room your kids sleep in.
Gas-heat homes
Furnace, water heater or stove? You have a CO source.
Aging parents
A number they can read to you over the phone.
Renters
Plugs in, no install, comes with you when you move.
RVs & cabins
Generator and propane risk, wherever you are.
Know what’s in the air your family breathes.
See the number. Every day, in every room that matters.
Shop Sentivo Detector™ — 50% off