Smart Temperature Humidity Sensor: The ST6 Wi-Fi thermometer hygrometer can upload the data to MOCREO APP via the Hub for 24/7 monitoring. Kindly note: Hub only supports 2.4 GHz Wi-Fi, and a hub handle up to 30 sensors Accurate Monitoring: The temperature and humidity monitor built-in SHT30-DIS-B chip for precise data, accuracy of ±0.54°F and ±3% RH. Temp range -4°F~140°F, humidity range 0~100% RH (Non-condensing). Ideal for greenhouse, vacation house, warehouse, basement, etc 3 Optional Timely Alerts: The indoor thermometer wireless sensor offers 3 alerts including Email, App, and 80dB Hub alarm. Features like "low battery alert" and "Hub offline notification" reduce the need for constant monitoring 2-Year Data Storage and Export: The smart temperature sensor on MOCREO APP provides clear charts for tracking temperature/humidity trends over time. You can enjoy 2 years of free data storage and CSV table support for detailed analysis 2-Year Battery Life: The humidity meter uses MOCREO low-power technology with a rechargeable battery that lasts up 2 years on a single charge. Alarm when the battery level drops below 10% MOCREO Thermometer Hygrometer with 24/7 real-time remote monitoring for peace of mind Product size: 7.6x4.92x2.8inch Weight: 381g Working distance: 131ft (unobstructed) Wireless Connection:BLE TX Power: Up to 20dBm Battery:3.7V Built-in Lithium Battery Battery Capacity:1800mAH Battery Life: 2 years Temperature Range: -4°F~140°F (-20℃~60℃) Temperature Accuracy: ±0.5°F(±0.3°C) Humidity Range: 0~100%RH Humidity Accuracy: ±3% Package Include 3 x Thermometer Hygrometer 2 x USB Charging Cable 1 x Hub 1 x Antenna 1 x Power Adapter 1 x Adhesive 1 x Pin Clip 1 x User Manual 1 x USB Power Cable