4 in 1 Multifunction GAS Meter

3803 is a multifunction GAS meter that simultaneously measures and records O2, CO, CO2 temperature and humidity.


Measures and logs Oxygen(O2)Carbon Monoxide(CO)Carbon Dioxide(CO2), relative humidity and temperature

High Accuracy gas sensor

Max/Min and average value display

Adjustable audible O2, CO and CO2 alarm

Display with backlight

Adjustable auto power off function

Mini USB interface Connections

Auto Power Off

Size(HxWxD): 240mm x 75mm x 57mm

Weight: 380g


O2 Measurement

Oxygen Range

130% vol.O2

Oxgen Resolution


Oxygen Respond Time

<15 Seconds

CO Measurement

Carbon Monoxide(CO) Range

01000 ppm

Carbon Monoxide(CO) Accuracy


Carbon Monoxide(CO) Resolution

1 ppm

Carbon Monoxide(CO) Respond time

<2 Seconds

CO2, Measurement

Carbon Dioxide(CO2) Range

09999ppm CO2

Carbon Dioxide(CO2) Resolution

1 ppm

Carbon Dioxide(CO2) Accuracy

±75ppm or ±5% of reading

Carbon Dioxide(CO2) Respond time

120 Seconds

Temperature & Humidity Measurement

Temperature Range

0 to 50(32 to 122)

Temperature Resolution


Temperature Accuracy


Humidity Range

0 to 100% RH

Humidity Resolution


Humidity Accuracy

±3.5%RH @ 20 to 80% RH ±5%RH @ 0 to 20%RH or 80 to 100%RH

Operate Environment

0 to 50(32 to 122)at<90%RH

Accessories : NiMH battery, gift box with carrying case.

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