China CAATM JY-CA339 Household Wall Mounted Combustible Gas Leak Detector - Reliable Suppliers & Factory Solutions
Product Description
The product adopts high-quality gas sensing components, combined with advanced electronic technology and sophisticated processes, and is widely used in large shopping malls, households, hotels, apartments and other places. Once the measured gas concentration reaches the alarm set value, the detector will emit sound and light alarm signals to remind users to take effective measures immediately, thereby avoiding accidents such as fires and explosions.
The product is equipped with a new generation of intelligent chips that can accurately detect combustible gases, prevent false alarms and false negatives, and can be connected to gas valves or ventilation fans to automatically cut off gas and deal with danger after an alarm. The product can display the working status of the detector in real time, with a fault self checking function. Once a fault or gas leak is detected, it will immediately prompt.
Adopting independent installation, no need for complicated wiring, simply plug in the socket to use. Real time detection of fire hazards, emitting at least 70db alarm sound when a fire occurs, allowing users to quickly respond and handle it. The instrument adopts high-quality gas sensors with a service life of up to 5 years and is equipped with expiration reminder function.
Technical Parameters
Detection Principle
Semiconductor type
Sampling method
Free diffusion
Measurement Range
0~20%LEL
Response Time
<=20s
Operating voltage
AC220V/50Hz
Networking Method
NB-IoT
Display method
Digital tube display
Power consumption
<=3W
Operating Temperature
-10°C~55°C
Sensor Life
5 years
Frequently Asked Questions (FAQ)
How does the detector alert users in case of a gas leak?
Once the measured combustible gas concentration reaches the pre-set alarm value, the detector immediately emits a loud sound alarm of at least 70dB along with flashing light signals to warn users to take quick protective actions.
Can this gas detector automatically shut off my gas supply?
Yes. The detector is equipped with intelligent control capabilities that allow it to connect directly to gas solenoid valves or ventilation fans. Upon triggering an alarm, it can automatically shut off the gas valve or turn on the fan to mitigate danger.
What type of network connection does this device use?
This detector uses NB-IoT (Narrowband Internet of Things) networking technology, enabling reliable, low-power wireless communication for real-time remote monitoring and status reporting.
Is professional installation required for this detector?
No. The device features an independent installation design. You do not need complex wiring; simply mount it in the desired location and plug it into a standard AC220V/50Hz power socket to start monitoring.
How long does the gas sensor last and how is it maintained?
The high-quality semiconductor sensor has a service life of up to 5 years. The device is built with a self-checking function that automatically monitors its status and will prompt you when the sensor reaches its expiration limit or if a fault is detected.











