Description
Overview
GAOTek digital air quality hygrometers are mainly used for environmental carbon dioxide concentration, temperature and humidity monitoring, suitable for homes, classrooms and offices. We use a high-definition black-bottom color screen, and the screen brightness can be set with buttons. The instrument responds quickly, the temperature and humidity measurement interval are 1 second, and the carbon dioxide concentration measurement interval is 4 seconds. We use high-precision sensors to improve the measurement accuracy of carbon dioxide.
Features
- HD black bottom color screen
- NDIR carbon dioxide sensor
- Human comfort index
- Carbon dioxide limit alarm
- Carbon dioxide User Calibration
- Screen brightness is adjustable
- Battery status indication
Technical Specifications
| Protection Class | IP20 |
| Response Time | Temperature 15 minutes
Humidity 15 minutes CO2 concentration: ≥ 3 minutes (in better air circulation) |
| Measuring Interval | Temperature: 1 second
Humidity: 1 second CO2 concentration: 4 seconds |
| LCD Refresh Interval | 1 second |
| Power Supply | Plan A 3 PCS 1.5 V AAA alkaline battery or USB power supply Plan B Lithium direct charge or USB power supply |
| Measure Parameters | Temperature, Relative Humidity, CO2 concentration |
| Power Supply Interface | Type C, DC 5 V or 2 A |
| Case Material | ABS |
| Measuring CO2 | 400 ppm to 10000 ppm |
| Measuring Humidity | 0 % RH to 100 % RH |
| Measurement Accuracy | CO2 concentration ± 3 % ± 40 ppm 400 ppm to 2000 ppm, 32 °F to 122 °F (0 ºC to 50 ºC) Other range presentation values are for reference only |
| Measurement Range | Temperature -4 °F to 140 °F (-20 °C to 60 °C)
Humidity 0 % to 100 % RH CO2 concentration 400 ppm to 10,000 ppm |
| Resolution | Temperature 33.8 °F (1 ºC)
Humidity 1% RH CO2 concentration 1 ppm |
| Operating Temperature | 32 °F to 122 °F (0 °C to 50 °C) |
| Storage Temperature | 86 °F to 140 °F (-30 °C to 60 °C) |
| Size | 3.58 in x 2.99 in x 1.57 in (91 mm x 76 mm x 40 mm) |
| Weight | 4.93 oz (140 g) |
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Documentation (User Manual or Instruction Manual)