Advanced Monitoring: Experience precise temperature and humidity control with 's Smart Bluetooth Thermometer & Hygrometer. Ideal for use in refrigerators and home weather stations. Versatile Applications: Whether you're looking to optimal conditions for food storage or maintain a comfortable home environment, this device is your perfect solution. User-Friendly: Easily connect to your smartphone via Bluetooth and monitor conditions in real-time. The intuitive app provides detailed data and alerts to keep your environment perfectly balanced. Energy Efficient: Designed for efficiency, it helps monitor environments without excessive power use, ensuring your utility bills are to a minimum while providing maximum functionality. Temperature measurement range: -40 ℃-60 ℃/-40 ℉-140 ℉ Temperature accuracy: (25 ℃/77 ℉, 20%-80% RH) Typical: ± 0.3 ℃/+0.5 ℉ Max: ± 0.5 ℃/± 0.9 ℉ Humidity range: 0% RH -99% RH Humidity accuracy (25 ℃/77 ℉, 20%-80% RH) Typical: ± 3% RH Max: ± 4.5% RH Battery: 2xAAA batteries (excluding) Due to different batches, there may be differences in product appearance and printed text, which not affect use Colour:White Material:ABS Specifications: B: Thermohygrometer Package Contents: 1 x Thermometer & Hygrometer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.