Range:0~9999ppm(methane) Detecting gas:Combustible gas Accuracy:≤ 5% FS(methane) Sensitivity:≤50ppm(methane) Response time:＜2secWarm-up time:Approx 120sec Display：LCDFlexible probe:450mm Packed by color box

Range of Air speed0.80-40.00m/s Resolution 0.01 ±(2.0%+30) Data holdWith backlight functionWith lower battery indication function Packed by color box

Range:0~200000Lux(0~20000FC)Resolution:1LUX/1FC Accuracy:±(3%+5Lux) (at 2854°K incandescent lamps) ±(6%+5Lux) others Cosine angle deviation characteristics:30°(±2%);60°(±6%);80°(±25%)Spectral range：320～730nm Packed by color box

Display resolution:0.1m Tolerance:﹤0.5%Measuring range:0-99999.9M With digital display and memory With metric and inch dual system With standPower supply:2xLR3 batteries Packed by color box

Ambient temperature:-20℃~60℃（- 4℉~140℉）Ambient humidity:0~100%Web bulb temperature:-20℃~60℃（- 4℉~140℉）Dew point temperature:-20℃~60℃（- 4℉~140℉）With backlight functionWith lower battery indication function Packed by color box

Measuring range:30-130dB Dynamic range:50dB Sound pressureaccuracy:±1.5dB(94dB@1KHz),±1.5dB(94dB@8KHz)Frequency response:30Hz-8KHz Microphone:Polarized capacitance microphoneWith backlight functionWith lower battery indication function Packed by color box