[WIRELESS ]: Low Energy wireless thermometer, hygrometer, data logger equipped with a factory-calibrated sensor, ensuring precise measurement of temperature, humidity. [DATA LOGGING WITH GRAPHICAL ANALYSIS]: Provides data storage at default settings, along with data storage via the app. [COMPACT DESIGN]: Significantly smaller than competitor models, allowing for placement nearly anywhere. Perfect for refrigerators, freezers, reptile enclosures, collectibles, cigars, greenhouses, labs, musical instruments, and more. [SIMPLE USAGE]: Instantly recognized by the app without requiring any setup. Power Supply: 3 x AAA batteries(Not included batteries) Color: White Material: ABS Package Contents: 1x Thermometer 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.