In addition to its modern design and the current relative air pressure displayed in the upper part of the clear and easy-to-read display, the MA 10238 also shows the indoor temperature and indoor humidity. A bar chart in the center of the display illustrates the history of relative air pressure over the last 24 hours. As with all MOBILE ALERTS modules, the barometer transmits data to your smartphone, which you can access from anywhere using the MOBILE ALERTS app for iOS and Android. The gateway (base station) is responsible for data transmission. It is the heart of the MOBILE ALERTS system and is included in this set. This gateway serves as the link between your sensors, the sensor cloud, and your smartphone. Within the app, you not only have the option to view current measurements or past data from the history, but you can also display the trends graphically, export the data for analysis, and set alarms so that you receive notifications on your smartphone when thresholds are exceeded or not met.