• Humidity/temperature probe
• Used to determine relative humidity and air temperature in indoor areas
• Used for calculation of wet bulb temperature, dew point and absolute humidity
• Must be used along with a compatible Testo multifunction instrument
• Bluetooth connection between measuring instrument and probe, a universal handle can easily be combined with other probe heads

The Testo 0636 9731 is a temperature/humidity probe head. The 0636 9731 includes a Bluetooth handle for wireless connection to your measuring device. Please note, this probe cannot be used on its own - it must be used with a Testo multifunction instrument. It is used to measure relative humidity and air temperature. Dew point, wet bulb temperature, absolute humidity as well as the heating and cooling output are calculated at the same time. Please do not use the probe in condensing atmospheres. For continuous application in high-humidity ranges > 80% RH at ≤ 30 °C for > 12 h > 60% RH at > 30 °C for > 12 h Humidity/temperature probe with Bluetooth The readings of the humidity/temperature probe are transmitted to your measuring instrument via Bluetooth, up to a distance of 20 m. Particularly useful: store individual readings directly in the measuring instrument by pressing the button on the humidity/temperature probe. The clearly structured measurement menu for long-term measurement enables the measuring instrument to be operated intuitively. Reading trends are reliably recorded thanks to the convenient input of measurement time and measuring cycle. These trends enable you to evaluate changes in the data. Proven quality from Testo: you can depend on reliable measurement results, because the humidity/temperature probe is equipped with our long-term stable humidity sensor. This is traceable to international humidity standards, such as ILAC, PTB and NIST. Wireless and space-saving: more applications, less equipment Endlessly versatile: a universal handle can be connected to all probe heads - so you can master more applications using less equipment and save space. The Bluetooth handle makes it more convenient to carry out your measurement and guarantees less cable clutter in the case. Or order the cable handle to connect testo probe heads. This is an advantage if Bluetooth signals are not permitted. If the humidity sensor needs to be replaced in the distant future, you can change the probe head. Intelligent calibration concept You will get exceptionally accurate measurement results with the digital probe, because the measuring instrument makes measurement uncertainty a thing of the past. You only need to send the probe head in for calibration - so the measuring instrument remains in continuous use. Intelligent calibration concept You will get exceptionally accurate measurement results with the digital probe, because the measuring instrument makes measurement uncertainty a thing of the past. You only need to send the probe head in for calibration - so the measuring instrument remains in continuous use.