The LED Panelmeter Voltmeter Ammeter has a measuring range of 0-100V DC and 1-10A.

• Operating Voltage 4-30V DC, max. 20mA
• On-Module Shunt Resistor 0.018 Ohm
• Sample Rate about 3 Samples / Second
• Display: 0.28" LED Blue (Voltage) and Red (Current)
• Dimensions: 48 x 29 mm, Thickness 22 mm
• Panel Opening: 46 x 27 mm

A trimmer on the back of the Panelmeter Voltmeter Ammeter allows for adjusting the voltage reading. The current reading is not adjustable.

The thin red and black wires are for the power supply, yellow is the voltage sensing line.

If you want to power the Panelmeter Voltmeter Ammeter from the voltage you want to measure, connect red and yellow together to [+].

If you have a separate power supply, connect it to the thin red and black wires. Connect yellow to the voltage you want to measure.

Please see the possible circuits in the pictures.