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FABISENSE 252D 5-in-1 Plug-in CO, Gas & Smoke Detector | Dual Power | Reverse-Compatible | for Home & RV
FABISENSE 252D 5-in-1 Plug-in CO, Gas & Smoke Detector | Dual Power | Reverse-Compatible | for Home & RV
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FABISENSE 5-in-1 Plug-in CO, Gas & Smoke Detector
The FABISENSE 252-D is the most comprehensive model in the 252 series, offering 5-in-1 real-time monitoring of carbon monoxide, combustible gas, smoke, temperature, and humidity. Its reverse-compatible socket design and dual-mode power make it the ideal all-in-one safety solution for homes, offices, garages, and RVs.
✅ Key Features
- Real-Time CO Monitoring (0–1000 ppm): Electrochemical sensor provides continuous, accurate carbon monoxide readings with instant alarm response.
- Combustible Gas Detection: Detects LPG, natural gas, and methane leaks before they reach dangerous concentrations.
- Smoke Detection: Optical smoke sensor identifies early-stage combustion, giving you critical extra time to respond.
- Temperature & Humidity Monitoring: Dual-parameter display keeps you informed of your full indoor environment at all times.
- Reverse-Compatible Socket: Unique reversible plug design fits both standard and reverse-polarity outlets no adapter needed.
- Dual-Mode Power Design: Operates on standard socket power with backup power compatibility for uninterrupted protection.
- Flame-Retardant Housing: Fire-resistant casing for enhanced safety and long-term durability.
- 85dB+ Audible Alarm: Immediate loud alarm + visual indicators when any threshold is exceeded.
⚠️ Alarm Thresholds
- CO 0–50 ppm: Safe normal operation.
- CO 51–100 ppm: Warning audible alert. Ventilate immediately.
- CO 101+ ppm: Danger loud alarm + visual alert. Evacuate and call emergency services.
- Gas / Smoke detected: Immediate maximum alarm. Evacuate and call emergency services.
⚙️ Technical Specifications
- CO Detection Range: 0–1000 ppm
- Gas Detection: LPG, Natural Gas, Methane
- Smoke Detection: Optical sensor
- Monitoring: CO + Gas + Smoke + Temperature + Humidity
- Socket: Reverse-compatible plug
- 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-D 5-in-1 CO, Gas & Smoke Detector
- 1× User Manual
- 1× Warranty Card
FABISENSE Sense the Air. Stay Safe.




- 5 stars: 32 (89%)
- 4 stars: 4 (11%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 star: 0 (0%)
Overall I am happy with the combination of CO, gas, smoke, temperature, and humidity monitoring. Setup was straightforward.
There are several readings on the screen, so it took a little time to get familiar with the layout. After that it was easy to use.
The unit works well and the alarm is easy to hear. I would like slightly larger labels, but the main numbers are clear.
I like the number of functions and the clear screen. It is a little larger than a basic detector, but that is expected for an all-in-one unit.
The five-in-one setup is convenient and the plug-in format works well for our home. So far it has been simple to use.
The unit is compact but the screen is still easy to read. It fits our outlet area without looking bulky.
We leave it plugged in all the time. It is nice to have continuous readings rather than only an alarm-only device.
If you do not want several separate devices on the wall, this multi-function design is a practical option.
The alarm is noticeable without being difficult to test or understand. The screen also makes the device more informative.
We installed it near the garage entrance. The gas and CO monitoring were the main features we were looking for.
This model covers the main functions I wanted for our home. The audible alarm and visual information are both useful.
A quick glance at the screen tells me what I need to know. I prefer this over detectors that only have status lights.
Besides the CO, gas, and smoke functions, I like being able to see temperature and humidity on the same screen.
There was no difficult configuration. Plug it in, check the display, and it is ready to use.
We first used it at home and then moved it to our RV for a trip. The compact size makes that easy.
The housing feels solid and the controls are simple. I like that it is made for continuous plug-in use.
Instead of using several separate devices for different readings, this gives us multiple functions in one place.
The numbers and indicators are easy to read from a normal distance. I appreciate the clear on-screen information.
The combination of CO, gas, and smoke monitoring makes sense for our utility room. The display is easy to see.
I prefer a plug-in monitor because I do not have to find shelf space for it. This one sits neatly on the outlet.
We keep it plugged in continuously. The screen gives us a quick way to check the room conditions whenever needed.
I was looking for something that could monitor more than just CO. Having gas and smoke detection together is useful.
The layout is straightforward and the labels are clear. It did not take long to understand what each reading means.
We wanted one device for our cabin that could cover several common monitoring needs. This model is very convenient.
It does a lot without taking up much space. Good choice if you want multiple functions in one wall-mounted unit.
The temperature and humidity readings are a nice bonus on top of the main safety monitoring functions.
The plug design worked well with our outlet setup. I did not need an extra adapter, which made installation easier.
Once plugged in, there is very little to manage. I just check the screen when I walk by and it gives a clear overview.
We keep this near the kitchen area. The gas and smoke functions make it a practical addition alongside the CO display.
The alarm is easy to hear and the visual indicators are helpful. I also like being able to see the actual readings.
The combination of CO, gas, smoke, temperature, and humidity is the main reason I chose this model. Very convenient.
This works well in our garage area where having CO and gas monitoring together is especially useful.
The display is bright and organized well. I can quickly see the room conditions without pressing through different menus.