DC 0-100V 10A Current Voltage Digital Display Module
|+100 7 % $2.01|
|+300 10 % $1.95|
|+500 12 % $1.90|
|+1000 15 % $1.85|
A voltmeter is an instrument used for measuring the electrical potential difference between two points in an electric circuit. Analog voltmeters move a pointer across a scale in proportion to the voltage of the circuit; digital voltmeters give a numerical display of voltage by use of an analog to digital converter.
A voltmeter in a circuit diagram is represented by the letter V in a circle.
Voltmeters are made in a wide range of styles. Instruments permanently mounted in a panel are used to monitor generators or other fixed apparatus. Portable instruments, usually equipped to also measure current and resistance in the form of a multimeter, are standard test instruments used in electrical and electronics work. Any measurement that can be converted to a voltage can be displayed on a meter that is suitably calibrated; for example, pressure, temperature, flow or level in a chemical process plant.
General purpose analog voltmeters may have an accuracy of a few percents of full scale and are used with voltages from a fraction of a volt to several thousand volts. Digital meters can be made with high accuracy, typically better than 1%. Specially calibrated test instruments have higher accuracies, with laboratory instruments capable of measuring to accuracies of a few parts per million. Meters using amplifiers can measure tiny voltages of microvolts or less.
Output Type: Digital
Display: 0.28" LED digital
Operating Voltage: 4V ~ 30V
Operating Current: <20mA
Measure voltage: 0V ~ 100V
Minimum Voltage resolution: 0.1V
Refresh rate: 500ms / times
Measure accuracy: 1% (1 digit)
Measure current: 10A
Minimum Current Resolution: 0.01A
Operating temperature: -10°C ~ 65°C
Operating Humidity: 10% ~ 80%
Size: 48mm x 29mm x 21mm
The Thick Red Line (VCC): Power supply input positive
The Thick black line (GND): Power supply input negative
The Thin yellow line (V+): Voltage measuring positive
The Thin red line (I+): Current measuring positive
The Thin black line: Current or Voltage measuring negative