<p> [Thermometer and hygrometer]- Interior and exterior thermometer and hygrometer with a diameter of 58mm are 2 in 1 tools to control and control the temperature and humidity of the part of the sauna and can be used in complete safety in the sauna. </p> <p> [Exceptional quality]- aluminum alloy case, plastic case, plastic lens, PVC dial. The scale on the dial of the is clearly visible, resistant to high temperatures and easy to read. </p> <p> [No battery required]- This sauna thermometer is small, round, light, easy to transport, without battery, without having to worry about moisture or high temperatures. </p> <p> [High precision]- The thermometer and the monitor humidity sensors offer professional accuracy of ± 1 ° F / ° C and 2-3%. Air comfort items go from normal to wet, give you the latest changes in the environment. </p> <p> [widely used]- Suitable for displaying the temperature of the sauna, house, living room, baby room, kitchen, office, cigar, incubator, reptiles, plant, greenhouse. </p>