L20 Hand-held Laser Methane Detector

Three modes for different nees:

L10   Super portable

L20   Standard

L20P Distance Enhanced


Extremely waterproof and dustproof -IP68
Implementing the design concept of "a reliable tool in the hands of inspectors", makes it a perfect combination of ergonomics and high performance with an appearance resembles a "flashlight".
L20P is capable of detecting in 200m

which is able to achieve the leakage detection in urban high-rise residential buildings.

Combined with a dedicated building inspection function, it is easier to use with more efficiency.


Equipped with auxiliary sight to accurately locate the target under strong light or in a long distance.

The multifunctional bracket and grip addons help to achieve convenience for high-rise bulding inspection and suitable for accessories like tripods.

L series products can last up to 12hours Fully integrated smart battery management technology helps greatly to guarantee the battery work properly even in extremely cold environment.

Inspection APP - AlphaOne - an intelligent system to realize real-time inspection data recording.

Compatible of both iOS and Android. 



L20/L20P Product Details 
ModelL20 | L20PDetection TargetsMethane(CH₄)
Measuring PrincipleTDLASTesting Laser RatingClass I (Harmless to Naked Eye)
Static Detection Limit5 ppm·mDirecting Laser RatingClass IIIR (Harmful to Naked Eye)
Response Time0.1sProtection LevelIP68
Sampling Rate100KHzExplosion-proof GradeExib IIC T4 Gb
Concentration Range0~100,000 ppm·mOperating Temperature-20°C ~ 50°C
Max Detection Distance150m | 200mOperating Humidity<90%RH, No condensation
Power SupplyLi-ion Battery (12h duration)Size225 x 70 x 80 mm
Inspection APPAlphaOneWeight0.5 kg


Three modes for different nees:

L10   Super portable

L20   Standard

L20P Distance Enhanced


Extremely waterproof and dustproof -IP68
Implementing the design concept of "a reliable tool in the hands of inspectors", makes it a perfect combination of ergonomics and high performance with an appearance resembles a "flashlight".
L20P is capable of detecting in 200m

which is able to achieve the leakage detection in urban high-rise residential buildings.

Combined with a dedicated building inspection function, it is easier to use with more efficiency.


Equipped with auxiliary sight to accurately locate the target under strong light or in a long distance.

The multifunctional bracket and grip addons help to achieve convenience for high-rise bulding inspection and suitable for accessories like tripods.

L series products can last up to 12hours Fully integrated smart battery management technology helps greatly to guarantee the battery work properly even in extremely cold environment.

Inspection APP - AlphaOne - an intelligent system to realize real-time inspection data recording.

Compatible of both iOS and Android. 



L20/L20P Product Details 
ModelL20 | L20PDetection TargetsMethane(CH₄)
Measuring PrincipleTDLASTesting Laser RatingClass I (Harmless to Naked Eye)
Static Detection Limit5 ppm·mDirecting Laser RatingClass IIIR (Harmful to Naked Eye)
Response Time0.1sProtection LevelIP68
Sampling Rate100KHzExplosion-proof GradeExib IIC T4 Gb
Concentration Range0~100,000 ppm·mOperating Temperature-20°C ~ 50°C
Max Detection Distance150m | 200mOperating Humidity<90%RH, No condensation
Power SupplyLi-ion Battery (12h duration)Size225 x 70 x 80 mm
Inspection APPAlphaOneWeight0.5 kg