Normal Temperature Collection Range: -50~110℃. DC Power Supply: this product needs to connect with DC 5-12V power; red wire connects with power positive, black wire connects with power negative. Display: when take off temperature sensor, digital tube will display ''- - -''; when temperature is lower than -50 Celsius or higher than 110 Celsius, digital tube will also display ''- - -''. Applications: 1. Measure car internal and external temperature 2. Measure air conditioned room indoor and outdoor temperature 3. Measure refrigerator internal and external temperature 4. Measure fish pond water temperature 5. Measure infant bath water temperature

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Material: Plastic + Metal Shell Color: Black Display Color: Red Refresh Rate: 4s/times Display Way: LED Digital Tube Minimum Resolution: 0.1 Celsius Measurement Precision: 1 Celsius Operating Temperature: -40~65℃ Measurement Range: -50~110℃ Electric Current: 18MA Power Supply Voltage: 5V~12V (max. 15V) Sensor Type: NTC Metal Waterproof Probe Temperature Probe: Standard 1 meter 10K/B3950 metal probe