TWO IN ONE: This mini digital hygrometer thermometer features a built-in probe, combining an electronic thermometer and hygrometer to measure temperature and humidity for indoor use. WIDE TESTING RANGE: Measures temperature from -58°F to 158°F and humidity from 10% to 99%RH. HIGH PRECISION DISPLAY: Temperature measurement accuracy is ±2°F; humidity measurement accuracy is ±5%RH. EASY TO INSTALL: This hygrometer gauge helps monitor current temperature and humidity levels. Designed with an embedded opening size of 1.81 x 1.06 inches. If needed, it can be secured using double-sided tape. WIDELY USED: Ideal for use in greenhouses, gardens, guitar cases, incubators, brooders, offices, cellars, refrigerators, closets, and other areas requiring temperature and humidity monitoring. Color: Black Material: ABS Size: Approximately 48 x 28.5 x 15.6mm Package Contents: 6 x Digital Thermometers Note: The package includes only the items listed above. Other products are not included. Note: Lighting effects and display settings may cause slight variations in color between the image and the actual product. Measurement error is +/- 1-3cm.