








Expert4House – Smart Home Automation
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The RF433 Interconnected Combined Gas and Carbon Monoxide Detector is a professional solution designed
to offer complete protection against two of the most dangerous risks in domestic and professional environments : leaks
of methane gas (CH₄) and the accumulation of carbon monoxide (CO). Equipped with integrated double sensor, connection
433MHz interconnected wireless, high definition LCD display, built-in siren ≥85dB and 220V wired power supply,
This smart device ensures timely and synchronized detection in every room.
It is the ideal solution for multi-storey houses , apartments, hotels, B&Bs, accommodation facilities and commercial buildings.
This detector is equipped with two high-precision sensors : an electrochemical one for carbon monoxide (CO) and a catalytic one.
for combustible gases such as methane and natural gases. It promptly detects dangerous concentrations of both gases ,
emitting a loud audible alarm (≥85 dB) and a visual signal on the display and LED lights. Protects against gas leaks from
stoves , boilers or heaters, and from CO poisoning, which can be fatal even at low concentrations.
The alarm is equipped with a radio module for automatic interconnection between multiple sensors . It works with technology
"One-Go-All-Go": if one detects a danger, all the others sound , maximizing the effectiveness of the alert, even
in distant or closed rooms. This system is ideal for multi-storey homes, residential buildings, hotels ,
schools and offices . A single activated unit immediately alerts all the others.
The display shows the carbon monoxide concentration in ppm (parts per million) in real time or indicates the word GAS
in the event of a methane or other fuel leak. The red warning lights flash differently depending on the type of
alarm ( CO or gas ), while a yellow light warns in case of failure, end of life or sensor problems.
In case of detection of dangerous concentrations, the device activates a high intensity audible alarm (≥85 dB), audible even
remotely, to ensure a rapid reaction. The alarm continues until the gas or CO level returns below the safety threshold.
The detector connects directly to the electrical network via power cable , ensuring continuous operation 24/7.
It does not require batteries, avoiding the risk of shutdown or false alarms caused by low battery.
The body is thin, light and modern. It can be installed on the wall or ceiling , depending on the type of gas to be detected.
If light gases such as methane or CO are detected, installation above ground is recommended.
With our interconnected sensors available on the site, you can easily create a customized alarm system, without the need for
control units or wiring. Simply purchase multiple compatible detectors to connect them together wirelessly (RF433 MHz): when one
click, they all ring. Ideal for covering every room, floor or environment with synchronized and effective protection .
You can combine different models (smoke only, CO only, Gas only or combined) to adapt the system to your specific needs.
NB : Only the "interconnected" RF433 MHz models in our catalogue can communicate with each other.
Compliant with EN50291-1:2018 (CO) and EN50194-1:2009 (gas) standards , this detector is designed for use
residential or commercial and ensures long-term accuracy, reliability and safety.
Sensor life: approximately 5 years . The device automatically signals the end of the sensor's useful life and
includes a TEST button to check its operation. Ideal for proactive and surprise-free security.
The sensor can be mounted on the wall or ceiling, depending on the type of gas to be detected. Includes everything you need
for installation . The slim design makes it suitable for any environment, even visually.
Methane gas (CH₄) above 8% LEL (≈4000 ppm)
Carbon monoxide with alarm thresholds compliant with EN50291-1:
50 ppm → alarm within 60–90 minutes. 100 ppm → within 10–40 minutes. 300 ppm → within 0–3 minutes











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