Product features:[ Magnetic ] It can be pasted on metal-containing places such as refrigerators and metal doors, and can be pasted and removed at any time. [ Button Settings ]It can be opened or closed for a long time; In a short time, it can be adjusted ℃/℉ [Easy To Read and Use]digital hygrometer thermometer work right out of without complicated function buttons. The beautiful white front panel has a clear LCD displaying large bold numbers that you can easily read even at a distance. The digital hygrometer thermometer can be placed anywhere in the home or carried outdoors, powered by a CR2032 battery (included), which you have a more powerful battery life and a more worry-free experience. [ Indicator]mini thermometer hygrometer with level Indicator, vivid visual helps you understand humidity immediately, assisting the usage of humidifier, dehumidifier settings, and humidistat, and also facilitate monitoring family's living conditions by a guard against coldness, dryness of skin, asthma, allergy, and mold. [High Accuracy and Quickly Refresh]With industrial-grade high precision temperature and humidity sensors, and this temperature and humidity gauge feature ±2%RH and ±1°F high precision, analog and chemical thermometers. This upgraded digital temperature and humidity gauge are more accurate and easier to use. The readings are updated every 10 seconds to give you the latest and more precise temperature and humidity readings. Material: ABS colour: Black Package Contents: 3 x 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.