Gas type: Oxygen/carbon monoxide/hydrothion/combustible gas( O2/CO/H2S/LEL)
Gas measurement range: O2: 0~30%vol, CO: 0~999umo/mol(ppm), H2S:0~100 umo/mol(ppm), EX (combustible ):0~100%LEL
Resolution:0.1%vol/1umo/mol(ppm)/1% LELLow/High alarm/Alarm setting: Yes
3 Alarm methods : Sound Alarm, Light flashing, Vibrating alert, adjustable alarm values, alarm sound up to 80db
Operating temperature: -20℃～50℃(except LEL is 0~40C)
Operating humidity:＜95%RH (no dew)
Display: 2.0 inch HD display
Power: 3.7V li-battery(Built-in)
Battery runtime: 8-12 hours or so.
Product Net Weight : 400g (with battery)
Size : 130mm×67mm×30mm (L × W × H)