Taikuwu 1 Pcs Temperature Meter Dual Digital Display Thermometer DC 4 28V 2 Pieces Waterproof NTC Sensor Probe Detector Gauge for Car/Room/Refrigerator/Water(Red/Blue)

Digital temperature gauge has 2 temperature sensors which you can test indoor and outdoor temperature at once Digital Temperature Meter Normal temperature measuring range is -20℃ to +100℃, the resolution is 0.1℃, the accuracy is 1℃ When you put off the temperature sensor, the LED display will display "---". When the temperature is lower than -20℃ or higher than 100℃, the LED display will display "---" Digital Temperature Meter needs DC 4-28V power supply. The green wire is connected to the positive side of power supply and the black wire is connected to the negative side of power supply Digital Thermometer can test the inside/outside temperature of car, the inside/outside temperature of air-conditioned room, the inside/outside temperature of refrigerator and the temperature of fish pond, etc