A very interesting and useful product. In addition to the temperature and the humidity is displayed and recorded in set time intervals. The min / max values of the individual sensors are recorded. Together with the 4 wireless sensors on the back have a promotional imprint from Wetterladen Incidentally, the device is extremely low and highly recommended. Whoever is looking for a data logger with PC connection, should never hesitate long. Hard to imagine that there will be this offer in this form long. Only the smaller software vulnerabilities (eg no function chart), but also are detachable if necessary with a little effort. Any deduction in the evaluation justifies in no case.