Description: Features: Room Indoor Thermometer Hygrometer Tool, with Built-in Probe Temperature Measurement Range: -50 ℃- 70℃ Temperature Measurement Accuracy: ± 1.0 ℃ Temperature Sampling Cycle: 10 Seconds Relative Humidity Test Range: 10% - 99% Humidity Resolution: 1% Humidity Measurement Accuracy: ±5% (at Room Temperature 25 ℃) Display Resolution: 0.1 ℃ Display: LCD Battery: 2x DC 1.5V AG13 Button Batteries (Not Included) Specification: Plastic: Plastic Color: White, Black Size: Approx. 48x 28.6x 15.2mm/ 1.89x 1.13x 0.60inch LCD Size: Approx. 35.7x 16.8mm/ 1.41x 0.66inch Cable Length: Approx. 1.5m/ 4.92ft Use Way: Put in the water tank that you want to measure. The indoor temperature and humidity display. Default celsius temperature. When the measured temperature is below -50 ℃, display LO ℃. When measured temperature is higher than 70 ℃, display HI ℃. Package Includes: 1 Piece Digital Thermometer Hygrometer Note: The color may have different as the difference display, pls understand. Please allow 1-3mm error due to hand test.