5-Year Catalytic Gas Sensor for Continuous Home Protection

When buyers compare residential gas detectors, it is easy to focus on what can immediately be seen.

The housing.

The LED.

The packaging.

The plug.

The price.

But the most important component of a combustible gas detector is hidden inside the product:

The Gas Sensor

The JKD-839 Residential Gas Detector uses a catalytic sensor designed for combustible gas monitoring, with a specified maximum sensor lifetime of:

This is the central selling point of this JKD-839 product page.

Because a gas detector is ultimately purchased for one fundamental purpose:

To continuously monitor the surrounding environment for combustible gas.

Everything else supports that function.

There are many inexpensive gas leak alarms available on the market.

A buyer can easily find products with:

• Similar plastic housings
• Similar LED indicators
• Similar audible warnings
• Similar packaging
• Similar product dimensions

These visible features do not necessarily tell you much about the actual sensing system inside the product.

JKD-839 is built around a catalytic gas sensor with natural diffusion sampling and a maximum specified sensor lifetime of five years.

It also provides a clearly specified alarm concentration:

>8.0%LEL (4000ppm)

This creates a straightforward purchasing proposition for professional distributors:

A gas detector should be selected around its detection performance—not just its appearance.

JKD-839 uses:

Catalytic Sensor

for combustible gas monitoring.

Catalytic sensing technology is designed to respond to combustible gases and is suitable for residential gas detection applications.

For a professional buyer, sensor technology matters because it directly relates to the primary function of the product.

A detector may have an attractive housing or sophisticated packaging, but those features do not replace the sensing element.

For JKD-839, the catalytic sensor is therefore not hidden at the bottom of the technical specification table.

It is one of the main reasons to choose the product.

JKD-839 uses:

Natural Diffusion Sampling

There is no external sampling pump required.

Instead, the surrounding air naturally reaches the sensing area, allowing the catalytic sensor to monitor the indoor environment during normal operation.

This architecture is particularly appropriate for a residential gas leakage detector, where the device is expected to remain installed and continuously monitor the surrounding environment.

The process is straightforward:

Gas enters the detector naturally

↓

Catalytic sensor monitors the combustible gas

↓

Gas concentration reaches the specified alarm condition

↓

Detector activates sound and light warning

The user does not need to manually collect an air sample.

The JKD-839 catalytic sensor has a specified maximum lifetime of:

For B2B customers, sensor lifetime is more than a technical number.

It affects the entire product lifecycle.

A defined sensor life helps distributors plan:

• Product positioning
• User documentation
• Replacement recommendations
• After-sales communication
• Customer education
• Product lifecycle management
• Future repeat sales

For private-label brands, this also provides a clear lifecycle specification that can be communicated throughout the product range.

A professional distributor does not simply purchase one shipment and forget about the product.

The distributor may sell the same product for several years.

This means the product needs a clear lifecycle strategy.

A defined sensor service period helps establish when the sensing element has reached the end of its intended lifetime and when replacement should be considered according to the product instructions.

This can also create a natural future replacement cycle.

For brands building a long-term home gas detector range, this is more useful than selling a product with an unclear sensor lifetime.

JKD-839 supports residential natural gas detection.

The specified detection gas is:

CH4

Methane is the primary component of natural gas.

This allows JKD-839 to be positioned under several relevant purchasing and SEO terms:

• Natural Gas Detector
• Methane Detector
• CH4 Gas Detector
• Methane Gas Sensor
• Natural Gas Leak Detector
• Natural Gas Alarm
• Home Gas Detector
• Residential Gas Sensor
• Combustible Gas Detector
• Gas Leakage Sensor

This variety is important because international B2B buyers do not all search using the same terminology.

JKD-839 also supports LPG detection applications.

This gives distributors greater flexibility when building a residential gas safety range.

Relevant product terms include:

• LPG Gas Detector
• LPG Leak Detector
• LPG Gas Alarm
• LPG Gas Sensor
• Residential LPG Detector
• Home LPG Alarm
• Flammable Gas Detector
• Combustible Gas Sensor

The ability to serve both natural gas and LPG applications gives JKD-839 a broader market position than a narrowly targeted single-application product.

The JKD-839 has a specified alarm concentration of:

LEL means Lower Explosive Limit, an important reference when describing combustible gas concentration.

When the specified alarm condition is reached, JKD-839 activates its warning system.

For professional buyers, this clearly defined alarm specification provides measurable technical information when comparing different gas detection devices.

Rather than simply claiming that the product "detects gas," JKD-839 provides a defined alarm concentration.

When the specified alarm condition is reached, JKD-839 provides:

Audible Warning + Visual Warning

The specified alarm volume is:

This gives occupants an immediate audible indication while the light alarm provides additional visual notification.

For residential environments, combining sound and light creates a simple warning method that users can quickly recognize.

The JKD-839 operates from:

AC 100–240V, 50Hz

with maximum power consumption of:

5W

The AC-powered architecture allows the detector to remain continuously powered during normal operation without routine battery replacement.

For distributors targeting customers who prefer permanently powered residential detectors, this provides a familiar plug-in solution.

Although sensor performance is the central focus of this article, JKD-839 also provides flexibility for international buyers.

Available configurations include:

• EU Plug
• US Plug
• AU Plug

Combined with AC 100–240V input, this makes the product easier to adapt for different regional markets.

A European distributor can select the EU version, while customers serving other compatible markets can choose the appropriate configuration.

The JKD-839 is supported by:

SGS Certification

For professional buyers, third-party certification provides additional technical support when evaluating the detector.

This is particularly important because the product belongs to the residential safety category rather than an ordinary household electronic accessory.

SGS documentation can support professional buyers during:

• Supplier evaluation
• Product comparison
• Technical review
• Procurement
• Customer inquiries

JKD-839 is manufactured according to:

EN50194-1:2009

This gives distributors targeting European residential markets another important purchasing consideration.

Combined with the catalytic sensing system, JKD-839 provides a complete technical proposition:

Catalytic Sensor + 5-Year Sensor Life + EN50194 + SGS

This is particularly attractive for professional home safety distributors that want more than an inexpensive generic detector.

JKD-839 is designed for indoor residential environments.

The specified operating conditions are:

Potential applications include:

• Residential kitchens
• Apartments
• Houses
• Villas
• Rental properties
• Holiday homes
• Residential buildings
• Properties using natural gas
• Properties using LPG

Actual installation must follow the product instructions and requirements appropriate to the target gas.

JKD-839 measures approximately:

120 * 75 * 40mm

and weighs approximately:

200g

The compact housing integrates:

• Catalytic sensor
• Gas detection electronics
• AC power system
• Audible alarm
• Visual alarm indication

into one residential detector.

This makes the product practical for household installation as well as retail packaging and international shipping.

For professional buyers, the sensing technology should be one of the first questions asked when evaluating a gas detector.

The JKD-839 provides a clear answer:

Catalytic Sensor

combined with:

Natural Diffusion Sampling

and:

Maximum 5-Year Sensor Lifetime

Rather than focusing only on cosmetic features, distributors can position JKD-839 around the part of the detector that actually performs the gas monitoring function.

This is particularly valuable when selling to technically knowledgeable customers.

The purchasing proposition is therefore not based on one cosmetic difference.

It is based on a clearly defined sensing system and product lifecycle.

JKD-839 is suitable for:

• Gas safety distributors
• Fire safety wholesalers
• Home safety brands
• Electrical wholesalers
• Gas appliance distributors
• DIY retailers
• Home improvement retailers
• Importers
• Security product distributors
• Private-label brands

For buyers already selling smoke and carbon monoxide detectors, JKD-839 can help extend the range into residential combustible gas detection.

JKD-839 can also support OEM and private-label projects.

Customization options can include:

• OEM Gas Detector
• OEM Methane Detector
• OEM Natural Gas Alarm
• OEM LPG Detector
• ODM Project Support
• Private Label Gas Sensor
• Custom Logo
• Product Label Customization
• Retail Packaging
• Multilingual User Manual
• Barcode Customization
• Master Carton Customization
• EU / US / AU Plug Selection

This allows professional distributors to build a branded gas detector around an established sensing platform.

Because the sensor is the core component of the detector, gas detection function testing should remain a central part of manufacturing quality control.

Production and inspection procedures include:

• Incoming material inspection
• PCB inspection
• AC power supply verification
• Catalytic sensor installation
• Gas detection function testing
• Alarm function verification
• Sound alarm inspection
• Light indicator inspection
• Functional testing
• Aging inspection
• Appearance inspection
• Final quality inspection
• Packaging inspection

These procedures help maintain consistent product performance across production batches.

Available Documentation

• SGS Certification
• EN50194-1:2009 Documentation
• Product Technical Datasheet
• Product Specification
• User Manual
• Available Compliance Documentation

Certificate & Document Downloads

Gas alarm EN50194 Report.pdf

Gas Alarm UKCA Certi.pdf

Gas Alarm ROHS Certi.pdf

What type of gas sensor does JKD-839 use?

JKD-839 uses a catalytic gas sensor for combustible gas detection.

How long is the sensor life?

The specified maximum sensor lifetime is 5 years.

What is the sampling method?

JKD-839 uses natural diffusion sampling.

What gas does JKD-839 detect?

The specified detection gas is CH4, and the product platform supports natural gas and LPG applications.

What is the alarm concentration?

The specified alarm concentration is >8.0%LEL (4000ppm).

How loud is the alarm?

The alarm volume is ≥85dB at 1 meter.

Does JKD-839 comply with EN50194?

JKD-839 is manufactured according to EN50194-1:2009.

Does it have SGS certification?

Yes. JKD-839 is supported by SGS certification.

Is it battery powered?

No. JKD-839 operates from AC 100–240V, 50Hz.

Which plug versions are available?

EU, US and AU plug versions are available.

Can we sell it under our own brand?

Yes. OEM, ODM and private-label customization are supported.