Feature:1. 2 SECONDS REFRESH FREQUENCY: Refresh frequency is once every 2 seconds, equipped with 1 meter long probe, easy to use2. ‑50℃~110℃ MEASURING RANGE: Come with small size, measuring range from ‑50℃～110℃. Suitable for general temperature measurement3. LARGE SCREEN DISPLAY: Provide large screen display, the value is clear at a glance. Working voltage is 1.5V4. UNDERWATER DETECTION: 4x20mm copper nickel plated waterproof probe can be used for underwater detection, very practical5. WIDELY USED: Very suitable for use in refrigerators, freezers, incubators, brooders, cigar humidifiers, reptile tanks, 3D printers, solar systems, cellars, etc.Specification:Item Type: Electronic Digital ThermometerMaterial: ABS, copperPurpose: Suitable for general temperature measurementTemperature Measurement Range: -50℃~110℃Operating Temperature: -5-50℃ (display)Probe: Approx. 4 x 20mm / 0.16 x 0.79in copper nickel plated, waterproof probeOperating Humidity: 5%～80%Working Voltage: 1.5VTemperature Sampling Period: 2 SecondsMachine Size: Approx. 4.8 x 2.86 x 1.5cm / 1.9 x 1.1 x 0.6inEmbedded Opening Size: Approx. 4.6 x 2.7cm / 1.8 x 1.1inTemperature Error: ±1℃ at room temperatureBattery Type: 2 x AG13 (not include)Probe Cable Length: Approx. 1meter / 3.3ft.Package List:2 x Electronic Digital ThermometerNote:This product is small in size and easy to use, suitable for general temperature measurement. If you have strict requirements on temperature accuracy, please choose carefully.