3.5 inch colorful touch screen display

Convenient one-key switch function

High accuracy infrared gas sensor

10 years life time for sensor

Internal temperature compensation technology for circuit

Internal pump for improving detecting accuracy

Independent double tube air chamber

7.4V large capacity rechargeable lithium battery

Inquiry function for alarm record

Arbitrary setting function for upper and lower limit values

Convenient calibration function

Password reset function

Perfect engineering design for instrument rear bracket