1. It can detect 1~4 kinds of gases at the same time, and the unit can be switched: Optional units: PPM, VOL%, LEL%, PPHM, ppb 2. Built-in pumping measurement, integrated water vapor and dust filter, quick response, support long-distance sampling, built-inwater vapor and dust filter to prevent damage to sensors and instruments due to water vapor and dust, can be used in highhumidity, high dust environment 3. The 2.31-inch high-definition color screen displays real-time concentration, alarm, time, temperature, humidity, storage, communication, power, charging status, concentration unit, gas name and other information 4. Standard 100,000 data storage capacity, larger capacity can be customized; support real-time storage, timing storage, or only save alarm concentration data 5. Three display modes can be switched Concentrations of 1-4gases are displayed at the same time, the concentration of single-channel gas is displayed circularly in large font, and real-time curve display, Manufacturer: SLZJWLPPA