Fast Response: The Fast Response That Measures Every 10 Seconds With 4 Sensitive VENTS to Provide Updated and Accurate Reading. High AccuracyAdvanced HumidityandTemperature sensor maintains accuracy to 1 percent Measuring Humidity Range: 10 percent RH - 95 percent RH. Mini Digital LCD Humidity Thermometer allows you to easily know the environment temperature and humidity around you. Mini size perfect to use in incubators, brooders, reptile tank, guitar case any other place that requires monitoring of temperature and humidity levels. Specification: Measuring Humidity Range: 10 percent RH - 95 percent RH. Unit dimensions:1.88x1.13x0.66 inch48x28x15mm . Color:Black. Material: ABS. Note: Thermometer can not directly be placed on heat source or humidification source. Package included:1 x Digital Hygrometer.