Buy one Sentivo Detector™, get one free.
The plug-in detector that shows the live CO number from zero — not a beep that waits until it’s already dangerous. Double up and cover every floor for half the price.
Every pack is buy one, get one free.
The more you protect, the more you save. One near every sleeping area and gas appliance — free units included.
What’s included +
- ✓ 2 Sentivo Detector™ detectors (1 free)
- ✓ Free US shipping
- ✓ 100-night money-back trial
What’s included +
- ✓ 4 Sentivo Detector™ detectors (2 free)
- ✓ Free placement guide
- ✓ Free US shipping
- ✓ 100-night money-back trial
What’s included +
- ✓ 8 Sentivo Detector™ detectors (4 free)
- ✓ Free placement guide
- ✓ Free US shipping
- ✓ 100-night money-back trial
Live PPM display
See CO from 0, not a yes/no beep.
30-second setup
Any standard outlet. No tools.
Firefighter-trusted
Recommended for every floor.
100-night trial
Full refund if it’s not for you.
Plug them in tonight. If your family doesn’t feel safer within 100 nights, send them back for a full refund — return shipping included. Every Sentivo Detector™ also carries a lifetime warranty.
Quick questions
How does the buy-one-get-one work? +
How many do I actually need? +
Will it false-alarm when I cook? +
What if it doesn’t work for me? +
Loved by families across the US
Finally covered the whole house
Honestly bought it because the second one was free, wasn’t expecting much. Third day the basement unit was sitting at 18-21 near the furnace. Had a guy out, turned out the heat exchanger was cracked. Kind of shook me up. Old alarm upstairs never did a thing.
Sent the free one to my dad
He’s 78 and lives alone with a gas stove, so the extra one was perfect. Took me a few tries to explain how to read it over the phone lol but now he tells me “still zero” every Sunday. Worth it just for that.
Took about 5 minutes total
Plugged all four in before dinner, no tools or ladder needed. Only thing I’d say is the display light is a little bright in the bedroom at night, but I’d rather see the number than not. No regrets.
Double your protection. Half the price.
Buy one, get one free ends when the timer hits zero. Cover every floor tonight.
Claim my BOGO offer →