Humidity and air pressure Wireless indoor and outdoor weather station with backlit display monitors temperature <ul class="a-un0rdered-list a-vertical a-spacing-mini"> <li class="a-spacing-mini"><span class="a-list-item">[Multi-function Weather Station]: ① Time and date ② 2 alarms with snooze mode ③ Indoor/outdoor temperature and humidity and trends ④ Air pressure ⑤ Indoor comfort level and window opening and closing reminder ⑥ Weather forecast for the next 12 hours ⑦ Adjustable backlight ⑧ Maximum/minimum records and alarms (triggered when thresholds are exceeded), etc. </span></li> <li class="a-spacing-mini"><span class="a-list-item">[Clear Large Screen Display]: Wide viewing angle makes it easy to read the information you want from any angle, even in the dark. </span></li> <li class="a-spacing-mini"><span class="a-list-item">[Multiple Working Modes]: When powered by an external power supply, the backlight is always on and has 4 brightness levels to choose from - bright -> medium -> dark -> off; when powered by batteries, it will light up for 15 seconds each time it is triggered and then turn off (this mode can also be selected when powered by an external power supply) </span></li> <li class="a-spacing-mini"><span class="a-list-item">[Wireless Sensor]: 60m transmission range in open areas; stable wireless connection; IPX4 waterproof rating; each weather station is compatible with up to 3 sensors (but only one is included in the order). </span></li> <li class="a-spacing-mini"></li> </ul>