Mainly used to measure changes in environmental temperature and relative humidity to improve the quality of life. It contains multiple air holes, which conforms to the principle of air flow and is more suitable for atmospheric sensing. The dial using thick glass, which has high permeability and clearer and more precise readings. Thermohygrometer, with high measurement accuracy, grasp the environmental temperature and humidity changes at any time Indoor thermometer hygrometer, with hanging ring, suitable for home, greenhouse planting, warehouse temperature measurement. Spec: Condition: 100 percent Brand New Item Type: Thermometer Hygrometer Material: Aluminum Alloy and Plastic and Glass Weight: Approx. 115g or 4.1oz Product Size: Approx. 10x10x2.5cm or 3.9x3.9x1.0in Most Suitable Indoor Temperature and Humidity: Winter: Temperature: 18-25, Humidity: 30 percent -80 percent Summer: Temperature: 23-28, Humidity: 40-50 percent Package List:1 x Thermometer Hygrometer