DROK LED Voltage Fahrenheit Temperature Time Digital Multimeter DC 0-30V 12V/24V Voltmeter Thermometer Clock 3in1 Multi Meter Gauge Panel

Parameters: Power Supply voltage: DC 7-30 V (with anti-reverse protection) Display: four 0.56 "LED digital tube Display color: white Refresh rate: about 300 mS / times Accuracy: about 0.2 °c Overload: please do not higher than 300 °F Measuring temperature: -67°F to 257°F Operating temperature: -40 °c -85 °c Sensor cable length: 80-100cm Sensor probe: 18B20 Measuring voltage: range 0-200 VDC , accuracy +/-0.1 V Clock: 12-hour, the battery backup is available for 3-4 years Display: 61 x 29 x 17.5 mm Installation dimensions: 58 x 26 mm Applications: measuring car, room, water, refrigerator, aquarium temperature and DIY etc. Display modes: Only display time Only display voltage Only display temperature Time, temperature, voltage display alternately Mode-Setting buttons: Short press €˜M€ to select the clock, seconds, voltage, temperature display mode; Long press show "ALL", Enter the time-temperature-voltage alternating display mode interval of 5 seconds. Short press €˜M€ to exit time-temperature-voltage alternating display and turn to the Time setting mode; Short press 'S' to enter Time setting button: Short press 'M' to adjust the hours, minutes (flashing);Short press 'S' again to exit time setting mode; Notice: 1.When enter Time setting mode and adjust 'Min', time will be stopped, please press 'M' to restart.2.The power cord cannot touch any exposed solder joints on the back of the button, otherwise it may cause chip damage. Wiring of voltage measure: Red: the positive of power supply Black: the negative of power supply or that of measured voltage Green: the positive of measured voltage Package includes: 1 x Digital clock voltmeter thermometer 3-in-1