(1PCS) Digital Voltmeter 0-100v And Ammeter 10a Dual LED Voltage

Digital Voltmeter (0-100V) and Ammeter (10 A) Dual Led Voltage Current Measurement Module

Specifications:-

Input Voltage – 4.5V to 30V DC

Input Current – <= 20mA

Display Color – Red (Voltage) , Blue (Current)

Measuring Voltage Range – 0V to 100V DC

Measuring Currrent Range – 0A to 10A

1. Custom Bench Power Supplies

​If you are building your own power supply (e.g., converting a computer SMPS or a laptop adapter into a lab tool), this meter is essential.

• ​Example: You can adjust the voltage to exactly 5V for an Arduino project and see exactly how much current the board is drawing.

​2. Battery Charging & Solar Systems

​It is widely used to monitor battery health and charging status.

• ​Example: When charging a 12V Lead-Acid or Lithium battery, the voltmeter tells you the current charge level (e.g., 13.8V), and the ammeter shows the speed of charging (e.g., 2.0 Amps).

​3. Electric Vehicles (E-Bikes / DIY Scooters)

​Small electric cycles or DIY e-scooters use these to act as a “fuel gauge.”

• ​Example: As you ride, the voltage will drop; if it goes too low, you know it’s time to recharge. The ammeter shows how much power the motor is pulling while climbing a hill.

​4. Load Testing and Troubleshooting

​Technicians use it to find faults in electronic devices.

• ​Example: If you plug in a device that is supposed to take 1A, but the meter shows 8A, you immediately know there is a short circuit, allowing you to turn off the power before things burn.