DC4V-28V Mini Temperature Controller Dual Display LED Digital Temperature Sensor Thermometer Tester with control NTC Metal Probe

Specifications: Size: 45MM * 26MMRefresh rate: about 1S / timesSupply voltage: DC 4-28VAccuracy: 1 °CMeasuring temperature: -20 °C ~ 100 °CWorking temperature: -40 °C to 80 °CDisplay color: Red BlueSensor Type: 1M NTC waterproof metal probeDisplay: 0.28 LEDMinimum resolution: 0.1 °C Instructions for se: [1] DC power supply: This product requires access 4-28V DC power supply, the red line for positive power supply, the black wire to the negative power. The greatest feature of this product: its own reverse anti-burning circuit, avoiding the user process due to improper operation problems. Friendly reminder: must not be connected with AC 220V Oh![2] Display Description: When the temperature sensor is removed when the digital display "- - -", the temperature is below -20 °Cor above 100 °C, digital also shows "- - -."[3] Acquisition normal temperature range: -20 °C to 100 °C, resolution 0.1 °C, accuracy of 1 °C.P roduct Usage:(1) measuring the temperature inside and outside the car(2) measuring the temperature inside and outside the air-conditioned room(3) measuring the temperature inside and outside the refrigerator(4) temperature measurement pond(5) baby bath water temperature measurementPackage Included:1 * 0.56 inch digital thermometer NTC metal waterproof temperature sensor * 2 cable