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(16) 16 total reviews
FABISENSE 252B Plug-in CO & Combustible Gas Detector | Carbon Monoxide, Gas, Temperature & Humidity Monitor | Dual Power | for Home & Office
FABISENSE 252B Plug-in CO & Combustible Gas Detector | Carbon Monoxide, Gas, Temperature & Humidity Monitor | Dual Power | for Home & Office
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FABISENSE 4-in-1 Plug-in CO & Combustible Gas Detector
The FABISENSE 252-B takes home safety to the next level with 4-in-1 simultaneous monitoring of carbon monoxide (CO), combustible gas, ambient temperature, and relative humidity. Designed for plug-in convenience, it delivers professional-grade detection in a compact, wall-socket form factor no installation required.
✅ Key Features
- CO Monitoring (0–1000 ppm): Electrochemical sensor continuously tracks carbon monoxide levels and triggers an alarm before concentrations reach dangerous thresholds.
- Combustible Gas Detection: Catalytic combustion sensor detects LPG, natural gas, and methane leaks, providing an early warning before gas accumulates to explosive levels.
- Temperature & Humidity Monitoring: Real-time readout of ambient temperature and relative humidity, helping you maintain a comfortable and healthy indoor environment.
- Dual-Mode Power Design: Supports standard socket power with backup power compatibility, ensuring uninterrupted monitoring even during power fluctuations.
- Flame-Retardant Housing: Built with fire-resistant materials for enhanced safety and long-term durability.
- 85dB+ Audible Alarm: Loud, clear alarm activates immediately when CO or gas exceeds safe limits. Paired with visual indicators for dual-mode alerting.
- Plug-and-Play: Plug into any standard 110–220V outlet. No tools, no wiring; monitoring starts instantly.
⚠️ Alarm Thresholds
- CO 0–50 ppm: Safe normal operation.
- CO 51–100 ppm: Warning audible alert. Ventilate the area.
- CO 101–300 ppm: Danger loud alarm + visual alert. Evacuate immediately.
- Gas detected above threshold: Immediate alarm. Turn off gas supply and evacuate.
⚙️ Technical Specifications
- CO Detection Range: 0–1000 ppm
- Gas Detection: LPG, Natural Gas, Methane
- Monitoring: CO + Gas + Temperature + Humidity
- Power: AC 110–220V plug-in (dual-mode)
- Housing: Flame-retardant material
- Alarm Level: ≥85 dB
- Certifications: CE / RoHS
📦 What's in the Box
- 1× FABISENSE 252-B 4-in-1 CO & Gas Detector
- 1× User Manual
- 1× Warranty Card
FABISENSE Sense the Air. Stay Safe.












- 5 stars: 14 (88%)
- 4 stars: 2 (13%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 star: 0 (0%)
I like having CO and gas detection together in one unit. It is slightly larger than a basic detector, but the added display and temperature and humidity readings make it worthwhile.
The monitoring functions are useful and setup was very easy. The display is a little brighter than I prefer at night, but overall it works well for our kitchen area.
No app or complicated setup was needed. I just plugged it in and could immediately see the room readings on the screen.
CO, combustible gas, temperature and humidity in one compact unit is very convenient. The device feels straightforward and practical for home use.
We installed it in the utility room where we have gas equipment. The plug-in format is convenient and the display is easy to check.
I replaced an older basic alarm with this one because I wanted actual readings on a screen. The extra gas monitoring function was the main reason I chose it.
This has been easy to use from day one. It monitors CO and gas continuously and also gives temperature and humidity information.
The large numbers and clear layout make it easy to check the readings quickly. I also like that it stays plugged in for continuous monitoring.
We have a gas stove, so I wanted something that could monitor combustible gas as well as CO. I like the simple plug-and-play design.
It fits neatly into a wall outlet and does not need any complicated installation. The temperature and humidity readings are a useful bonus.
The alarm is definitely loud enough to get your attention. The visual display is also helpful because it shows what the unit is monitoring.
We keep this plugged in near our gas appliances. I like being able to see the current readings at a glance instead of relying only on an alarm.
I wanted one device for CO, gas, temperature and humidity instead of several separate monitors. This does the job nicely and does not take up much space.
The screen is bright and easy to read from a few feet away. Setup was straightforward and the controls are not complicated.
We use it near the kitchen because it monitors both carbon monoxide and combustible gas. The display is clear and the plug-in design keeps it out of the way.
I plugged it into the wall and it started monitoring right away. The CO and gas readings are easy to understand, and I like having temperature and humidity on the same screen.