Description: Made of aluminum alloy and plastic, good performance and durability. Equipped with a coil spring-type sensing elements, no need for battery. Analog display, it shows the temperature and humidity at the same for time, convenient to read the data. Sensitive to accurately measure the real-time temperature and relative humidity of the environment. Small size, lightweight and easy to carry, can also be hung on the wall. Specification: Material: aluminum alloy, plastic Gauge diameter: about 58mm Thickness: about 12mm Temperature range: -30~50 Accuracy: 0.1 Humidity range: 0~(RH) Temperature measurement accuracy: 2 Temperature resolution: 1 Humidity measurement accuracy: 2%(RH) Temperature measurement error: 2 Humudity measurement error: 5% (40%~70%) (RH) Package included: 1pc x analog humidity meter Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow slight deviation for the measurement data and make sure you do not mind before ordering.