DC 0-100V 10A Digital Voltmeter Ammeter with Red/Green Dual LED Display and Integrated Shunt EL3990

The EL3990 Digital Voltmeter Ammeter is a handy panel instrument designed for the simultaneous measurement and display of direct current (DC) voltage and current .

Thanks to the two LED displays , it allows you to immediately check both values: the voltage is displayed in red , while the current is indicated in green , allowing for simple and immediate reading even inside panels, power supplies and electronic equipment.

The module allows you to measure voltages up to 100V DC and currents up to 10A , making it suitable for numerous electronic, electrical and hobby applications.

Voltmeter and ammeter in a single module

With a single device you can simultaneously monitor:

• Continuous voltage up to 100V DC
• Continuous current up to 10A

The current measurement is carried out on the negative line of the circuit.

Integrated 10A shunt

The module has a built-in shunt , avoiding the need to install an external shunt for measuring currents up to 10A.

This feature simplifies wiring and makes the module particularly suitable for integration into power supplies, test benches, battery systems and self-built equipment.

Dual LED display

Voltage and current are displayed simultaneously using two different colors:

Red display: voltage (Volts)
Green display: current (Amperes)

The color differentiation allows you to immediately identify the displayed parameter.

Reverse polarity protection

The module is equipped with reverse power protection . If the positive and negative terminals are accidentally reversed, the device is designed to prevent damage to the display.

Applications

The voltmeter/ammeter can be used for numerous applications, including:

• adjustable DC power supplies;
• laboratory power supplies;
• battery and accumulator monitoring;
• charger;
• DC power systems;
• electrical and electronic panels;
• self-built equipment;
• Arduino and maker projects;
• direct current photovoltaic systems compatible with the instrument limits;
• Monitoring voltage and current consumption of electronic devices.

It is particularly useful when you want to check in real time both the supply voltage and the current drawn by the load .

Technical specifications

Model: EL3990
Type: Digital panel voltmeter/ammeter
Measurement type: direct current (DC)
Voltage range: 0-100V DC
Current range: up to 10A DC
Display: Dual LED display
Voltage color: red
Current color: green
Shunt: integrated, up to 10A
Current measurement: on the negative line
Protection: reverse polarity of power supply
Display refresh: fast, about 500 ms
EAN: 8053323554431

Ideal for monitoring power supplies and batteries

The compact size and simultaneous display of the two parameters make this module a practical solution for adding a measurement system directly to the panel of power supplies, chargers, battery systems and electronic devices .

The integrated shunt also reduces the number of components required for installation, making it easier to build the measurement circuit.