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SENSZO 4-in-1 CO & Gas Detector
SENSZO 4-in-1 CO & Gas Detector
- Live CO & gas readings
- Detects CO, natural gas & propane
- Real numbers, not just a green light
- Audible alert before it's too late
- Firefighter recommended | 100-Night Trial
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Plug SENSZO into an outlet and give it around 200 seconds to calibrate. No tools, no ladder, and no complicated setup.
Unlike a smoke alarm, it does not need to be mounted high on the wall. Carbon monoxide mixes with the air, so simply choose the room you want to monitor, such as a bedroom, kitchen, or hallway.
Yes. We send the correct plug type based on your delivery country.
U.S. orders arrive with a U.S. plug, and UK orders arrive with a UK plug.
2 - 4 monitors are ideal for most homes. Put one near the bedrooms, one in the kitchen or living room, one near the furnace or water heater, and one on another floor.
CO (PPM) tells you how much carbon monoxide the monitor detects in the air. 0 PPM means none detected. The higher the number, the more CO is present. SENSZO alerts at 10 PPM.
Gas (%LEL) shows whether the monitor detects combustible gas in the air. 0 means none detected. A number above 0 means gas has been detected.
Temperature shows how warm the room is in °F or °C.
Humidity shows the moisture level in the air. It is shown as a percentage. Most homes are comfortable around 30–50%.
Most standard CO detectors give you a green light and only sound when they reach their alarm threshold. Many are set to alert at 70 PPM. SENSZO shows the live CO reading on screen and alerts at 10 PPM.
It also monitors combustible gas, temperature, and humidity, while most standard alarms only monitor CO. SENSZO uses Grade 3 dual sensors rather than a single Grade 1 sensor for faster, more reliable readings.
Instead of waiting for an alarm, you can check the numbers whenever you want.
What the professionals have to say.
THE DANGER YOU CAN'T SEE OR SMELL
CO can build quietly while everyone inside carries on as normal.
Carbon monoxide is invisible and has no smell. Its early effects can feel like a headache, fatigue, or the flu. In serious exposure, confusion, loss of consciousness, and death are possible.
Physical stress gets louder
Standard alarms finally react
*PPM - parts per million, showing how much carbon monoxide is present in the air.
Don't wait for someone to suffer before you act.
SENSZO puts what matters live on one clear screen, so you can check the air in your home instead of relying on a symptom or waiting for an alarm.
CAN YOU TRUST THE DETECTOR YOU ALREADY HAVE?
You have a detector. But will it work when it matters?
40% of tested home CO detectors failed to alarm at the highest hazardous levels
The average home check costs $500+. SENSZO gives you clear readings every day.
More time to notice. More time to act.
WHAT A STATUS LIGHT CAN TELL YOU
Your detector is on. That is all you know.
- Shows the unit has power
- May show a basic operating status
- Does not show live room readings
WHAT SENSZO LETS YOU SEE
What is happening in your home, right now.
- Live CO and gas readings
- Temperature and humidity
- One clear screen you can check at a glance
Find what coverage works for you
Which rooms in your home are you leaving unchecked?
Tap the rooms you want to cover
✓
THIS IS NOT A RARE ACCIDENT
It doesn't take a fire for CO to become deadly.
Carbon monoxide has no smell and no colour. The risk is believing everything is fine simply because there is no warning yet.
Americans die each year from unintentional CO poisoning not linked to fires.
Americans visit an emergency department for CO poisoning each year.
Americans are hospitalized for CO poisoning each year.
These aren't freak accidents. They happen in ordinary homes, just like yours
U.S. CDC, Carbon Monoxide Poisoning Basics, reviewed January 2026.
A firefighter's perspective
The green light was on. The family was still in danger.
I have walked into carbon monoxide calls where the alarm never sounded, the green light was still on, and the family had no idea anything was wrong. That is what made me take home protection seriously. SENSZO gives me a clear reading, not just a light that tells me to assume everything is fine.
Know what’s in the air your family breathes.
the readings explained
WHO SENSZO IS FOR
If your home burns anything, SENSZO is for you.
FAQs
Yes, SENSZO is designed to monitor carbon monoxide and combustible gas & propane in one device. It also shows temperature and humidity on the same screen.
Three to four monitors is ideal for full-home coverage. Place one near the bedrooms, one in the main living area, one near your furnace or water heater, and one on any additional floor. That covers the places you sleep, spend time, and run fuel-burning appliances.
For carbon monoxide, height is less important because CO mixes evenly with the air. Simply plug SENSZO into a suitable wall outlet. For combustible-gas monitoring, choose an outlet in the area you want to monitor and keep the screen easy to check.
The sensor is designed for up to five years of normal use. SENSZO also comes with a 100-Night Trial, so you can make sure it is right for your home.
The live display shows the current CO and combustible-gas readings on screen, along with temperature and humidity, so you can see it is actively monitoring the room.
No. Plug SENSZO into a suitable wall outlet and allow it to complete its initial calibration. No Wi-Fi, app, or battery replacement needed.
SENSZO 4-in-1 CO & Gas Detector
SENSZO 4-in-1 CO & Gas Detector
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100-Night Trial
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