Use the probe to quickly check the indoor climate, for example in offices, production areas, or in warehouses. As well as temperature, humidity, and absolute pressure, it also measures the carbon dioxide concentration (CO₂).

The CO₂ concentration is a primary indicator of indoor air quality. Poor air quality due to excessive concentrations of CO₂ can cause tiredness, lack of concentration, and even illness. Therefore the CO₂ concentration should normally not exceed 1000 ppm.

TESTO 0632 1535 Indoor air quality probe specifications:

Temperature – NTC :

• Measuring range : 0 to +50 °C
• Accuracy: ±0.3 °C

Humidity – Capacitive :

• Measuring range : 0 to 100 %RH
• Accuracy: ±2 %RH (+2 to +98 %RH)

Absolute Pressure :

• Measuring range: +600 to +1150 hPa
• Accuracy: ±10 hPa

Ambient CO₂ :

• Measuring range : 0 to +10000 ppm
• Accuracy :±(75 ppm ±3 % of mv) (0 to +5000 ppm)±(150 ppm ±5 % of mv) (+5001 to +10000 ppm)