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| Low cost portable meter checking indoor air quality | |
| Big dual display lcd with 2 parameters Simultaneously: CO2 ,Temperature | |
| Design with ndir (non-dispersive infrared) Wave guide technology sensor | |
| Manual calibration is recommended | |
| Warning carbon dioxide level | |
| Backlight function for working in dark | |
| Longtime drift compensation | |
| Audible alarm (-80db) threshold setting | |
| Max ,min, average functions included | |
| RS232 output every 2 seconds to pc for analysis | |
| Hold function freezes current readings | |
| Display 8 hrs twa value (time-weighted average) Or 15 minutes stel value (short-term exposure limit) | |
| Housing designed surrounds with rails to help Air ventilation for quick and accurate response | |
| Easy to calibrate at fresh air around 380-420ppm |