Details
Product Description
Kit for evaluating the indoor air quality. The testo 440 air velocity and IAQ measuring instrument and the CO2 probe with Bluetooth® including temperature and humidity sensor are all safely stowed away in the case. So you can get down to work straight away!
Details on kit components
Testo 440 – Air velocity and IAQ measuring instrument
Delivery Scope
- testo 440 air velocity and IAQ measuring instrument, 3 x AA batteries, USB cable and calibration protocol (0560 4401)
- CO2 probe* with Bluetooth®, including temperature and humidity sensor (consisting of CO2 probe head and Bluetooth® handle); 4 x AA batteries, table stand and calibration protocol (0632 1551)
- Basic case for testo 440 and 1 probe
Technical Data
Temperature – NTC
Measuring range |
-40 to +150 °C |
Accuracy |
±0.4 °C (-40 to -25.1 °C)
±0.3 °C (-25 to +74.9 °C)
±0.4 °C (+75 to +99.9 °C)
±0.5 % of mv (Remaining Range) |
Resolution |
0.1 °C |
Temperature – TC Type K (NiCr-Ni)
Measuring range |
-200 to +1370 °C |
Accuracy |
±(0.3 °C + 0.3 % of mv) |
Resolution |
0.1 °C |
General technical data
Weight |
250 g |
Dimensions |
154 x 65 x 32 mm |
Operating temperature |
-20 to +50 °C |
Product colour |
black/orange |
Connectable probes |
1 x digital probe with cable or 1 x Temperature NTC TUC, 1 x digital Bluetooth probe or testo Smart Probe, 1 x Temperature TC Type K |
Battery type |
3 AA mignon 1.5 V |
Battery life |
12 h (typically vane measurement) |
Interface |
Bluetooth®; USB |
Storage temperature |
-20 to +50 °C |
Temperature – NTC
Measuring range |
0 to +50 °C |
Accuracy |
±0.5 °C |
Resolution |
0.1 °C |
Humidity – Capacitive
Measuring range |
5 to 95 %RH |
Accuracy |
±3 %RH (10 to 35 %RH)
±2 %RH (35 to 65 %RH)
±3 %RH (65 to 90 %RH)
±5 %RH (Remaining Range)
±0.06 %RH/K (0 to +50 °C) |
Resolution |
0.1 %RH |
Please see the additional accuracy information for humidity in the instruction manual.
Absolute Pressure
Measuring range |
+700 to +1100 hPa |
Accuracy |
±3.0 hPa |
Resolution |
0.1 hPa |
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Ambient CO₂
Measuring range |
0 to 10000 ppm |
Accuracy |
±(50 ppm + 3 % of mv)
(0 to 5000 ppm)
±(100 ppm + 5 % of mv)
(5001 to 10000 ppm) |
Resolution |
1 ppm |
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General technical data
Storage temperature |
-20 to +60 °C |
Weight |
195 g |
Dimensions |
295 x 50 x 40 mm |
Operating temperature |
-5 to +50 °C |
Length probe shaft |
130 mm |
Probe head diameter |
30 mm |
Product colour |
black/orange |
Battery type |
4 x type AA batteries |
Battery life |
21,5 h |
Data transfer |
Bluetooth® |
Radio range |
20 m |