ITEM NAME:0.56 inch Red+Blue Dual Display Digital LED Thermometer Temperature Meter W A3M2 0.56 inch Red+Blue Dual Display Digital LED Thermometer Temperature Meter W A3M2 Size: 45MM * 26MM Refresh rate: about 1S / times Supply voltage: DC 4-28V Accuracy: 1 Celsius Measuring temperature: -20 Celsius ~ 100 Celsius Working temperature: -40 Celsius to 80 Celsius Display color: Red + Blue Sensor Type: 1M NTC waterproof metal probe Display: 0.28 LED Minimum resolution: 0.1 Celsius Color: Black Material: ABS Instructions for use: 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! Display Description: When the temperature sensor is removed when the digital display "- - -", the temperature is below -20 Celsius or above 100 Celsius , digital also shows "- - -." Acquisition normal temperature range: -20 Celsius to 100 Celsius , resolution 0.1 Celsius , accuracy of 1 Celsius . Product Usage: measuring the temperature inside and outside the car measuring the temperature inside and outside the air-
