???????Thoughtful Design?Magnetic back, small hole in the upper right corner and IPX4 waterproof mini body of the IBS-TH2 sensor will be ideal for many places such as baby rooms, refrigerators, guitar cases, reptile terrariums, greenhouses, etc. ???????One To Many Connection?The WiFi gateway and Bluetooth sensor can detect indoor temperature and humidity and connect up to 9 sensors so we can simultaneously monitor the temperature and humidity of multiple spaces. ???????Alarms Notification?Just set the temperature and humidity limit alarm for the wifi gateway and each sensor. When the detected temperature/humidity exceeds the preset limit, the associated sensor will beep and send us a notification from the INKBIRD app. We can dismiss the alarm and view all alarm records from the app. ???????APP Monitor & Data Storage?With the INKBIRD app, view max/min/average values and check the recent 1-year history. Sample temperature and humidity every 10s, and store data for up to 30000 points at 1-minute logging intervals. All data can be locally stored for 20 days and synced with the app once connected. ???????WIFI Thermo-Hygrometer Combo?IBS-TH2 sensor can simultaneously detect temperature: -40?-60? and humidity: 0%RH-99% HR. By connecting the IBS-M2 wifi gateway via 2.4GHz WIFI to monitor remotely. The Bluetooth transmission distance between the IBS-TH2 sensor and IBS-M2 is up to 160ft (50m).