The self-contained humidity and temperature-measuring data logger records with an accuracy of ±0.5°C ±2% RH. Additional features include measurements of 0 to 100% RH (noncondensing, resolution 0.03% RH) and 0 to 70°C (resolution 0.01°C); compact design; and no power supply needed. With its all-in-one microphonelike design, HumidiProbe can be used in various locations. Up to four units can be connected to one PC to monitor multiple locations at once.