1. 3 in 1 barometer hygrometer: outdoor hygrometer/barometer/thermometer can control the humidity, air pressure and temperature in the range of 970 to 1060 hPa, 30 to 50 °C, 0 to RH, the barometer can accurately measure the weather. 2. Indoor and outdoor barometer: the barometer thermometer and hygrometer can be placed indoors or outdoors, the barometer is suitable for home use, light weight, easy to carry, can be used when doing activities like fishing, hiking, etc. Indoor and outdoor thermometers are soft, strong, durable, with good performance and long life, economical and practical. 3. Easy to install: light weight, easy to install, suitable for hanging or standing on the surface. Suitable for patios, gardens, porches, garages, living rooms, offices, etc., classic and practical, simple and retro, suitable for decorating different types of home. 4. Dial type barometer: the most important function of the barometer is the barometric trend. And you can record the air pressure at certain moments to allow a clear comparison. Measures changes in temperature, humidity and air pressure parameters.