The measuring devices PRO D01 (1-channel), PRO D05.2 (2-channel), and PRO D05.3 (3-channel) are high-quality, multifunctional handheld devices with exceptional features, durability, and user comfort, ensuring safe and reliable operation. The PRO D05.2 and PRO D05.3 offer data logging capabilities and a USB-rechargeable battery system. These measuring devices communicate digitally with probes, allowing for longer cable connections (up to 10 meters). A wide range of sensors is available: temperature, pressure (absolute, relative, differential), humidity (relative and absolute), dew point, wet bulb temperature, mixing ratio, partial vapor pressure, air velocity, flow (configurable channel section), light measurements (illuminance, luminance, irradiance, UVA, UVB, UVC, UVBC, PAR) with integrated calculations, and Indoor Air Quality (IAQ): CO2 and VOC index. Digital sensors are factory calibrated and can be easily replaced without recalibration.

The multilingual LCD display offers excellent visibility in various lighting conditions. It can display large values or measurement trend graphs. Functions such as HOLD and REL enhance user flexibility. With their large storage capacity, these measuring devices can record up to 1 million data points in CSV files. The recorded data can be easily retrieved on a PC via a USB connection. User-friendly software, ProXware, for data analysis and presentation is available, along with an extended version with additional features.

Configure alarm thresholds with optional hysteresis. The device provides visual and acoustic alerts when the thresholds are exceeded. It calculates and displays MIN, AVG (average), and MAX values for each variable.