It measures CO2 level, air temperature, humidity and also do data logging, which is an ideal instrument for indoor air quality (IAQ) diagnosis and HVAC system performance verification. Poor indoor air quality is considered unhealthy because it causes tiredness, loss of ability to concentrate, and even illness(ex. Sick Building Syndrome). IAQ monitoring and survey, especially on CO2 level and air ventilation become widely applied in public areas such as offices, classrooms, factories, hospitals, day care centers and hotels. It is also suggested in regulations of industrial hygiene in some countries.

Features: 

Super large display of CO2 level, temp., humidity, date and time.

15 degree tilt angle. Easy to see and read.

Indoor air quality level (Good, Normal, Poor) indication.

Stable NDIR sensor for CO2 detection. 

Visible and audible CO2 warning alarm. 

ABC(Automatic Baseline Calibration) and manual CO2 calibration.

Max. & Min. CO2 value recall function. 

Data logging up to 15999 points. 

Sampling rate from 1 second to 4:59:59.

Measuring range:

CO2: 0~9999 ppm

Air Temp.: -10C~60C (14F~140F)

Air RH%: 5.0%RH~ 95.0%RH

Resolution:

CO2: 1ppm

Air temp.: 0.1C/0.1F 

Air RH%: 0.1%RH

Accuracy:

CO2: 50ppm±5% of reading

Air temp.: ±0.6C, ±1.0F;

Air RH%: ±3% RH(at 25C, 10~90%RH ), ±5%RH (at 25C, <10% & >90% RH )

Response:

CO2: <2mins (90% step change)

Air temp.: <2mins (90% step change)

Air RH%: <10mins (90% step change)

Max/Min. function: included

Air quality level(CO2 concentration): 

Good: <700ppm; 

Normal: 700~1000ppm (Programmable by user)

Poor: > Normal

Alarm: >1000ppm (Programmable by user)

Sampling rage: 1sec~04:59:59

Memory points: 15999 points

Operation condition: -10~50C, 5~80%RH (Be sure to avoid condense)

Storage condition: -20~60C, 5~90%RH (be sure to avoid condense)

Display: LCD & green LED

Power supply: DC5V(+/-10%),>=500mA

Accessories: Meter, Universal adaptor (5V+10%, >=0.5A), USB cable Download software CD,PDF English Operation manual.