1. The Portable H2 Gas Detector utilizes a high-precision sensor to ensure accurate detection of hydrogen gas levels 2. With the ability to store up to 100,000 sets of data, this Portable H2 Gas Detector features an adjustable storage interval as short as 5 seconds 3. The Portable H2 Gas Detector is equipped with an LCD display that shows gas type, unit, concentration values, maximum readings, local time, and ambient temperature 4. This Portable H2 Gas Detector supports quick switching between gas concentration units in PPM and mg/m³ 5. Featuring a built-in micro sampling pump with adjustable suction size across ten stalls, Manufacturer: KAKAK