VC288 Dual Digital Voltmeter Ammeter

The DSN-VC288 Dual Digital Voltmeter Ammeter Panel Meter is a highly efficient, compact diagnostic instrument engineered for simultaneous, real-time tracking of both DC voltage and current flow [Makersbd, RoboShop]. This space-saving dashboard module features a dual-layer display array comprising a bright red 3-digit numeric LED window for voltage monitoring (V) layered neatly above a high-contrast blue 3-digit numeric LED window for tracking electrical current (A). By delivering two critical electrical performance indicators at a glance, it eliminates the need for bulky independent instruments inside custom control boxes or workspaces.

Operating across a versatile independent power range, the module can read electrical loads up to 100V DC while measuring active current throughput up to 10A via its on-board, low-resistance solid alloy shunt resistor [Makersbd, RoboShop]. To guarantee professional accuracy, the reverse side of the PCB features integrated V_ADJ (Voltage) and I_ADJ (Current) fine-tuning trimmer potentiometers, allowing technicians to manually calibrate and true the display values against reference desktop multimeters. Its simple rectangular snap-in flush mount profile makes it a staple addition for custom benchtop laboratory power supplies, electric vehicle battery packs, solar generation tracking stations, and industrial test fixtures.

• Simultaneous Dual Readouts: Displays live voltage and load current indicators concurrently on separate high-visibility red and blue 3-digit LED screens [FellDen, RoboShop].
• On-Board Shunt Resistor Included: Built with an integrated thick alloy shunt trace (R010), allowing out-of-the-box current handling up to 10A without requiring messy external wiring layouts [Makersbd, RoboShop].
• Independent On-Board Calibration: Rear-facing multi-turn trimming potentiometers let you manually dial in voltage (V_ADJ) and current (I_ADJ) to zero out system measurement offsets.
• Flexible Power Splitting Topology: Accommodates a dedicated 4.5V to 30V power rail to run the display logic independently, enabling the module to measure external system voltages down to absolute 0V DC [RoboShop].
• Snap-In Panel Bezel Shell: Designed with molded lateral retention clips that bite into standard rectangular console cutouts, holding the meter firmly without the use of hardware screws.

The panel meter splits its operations across two distinct wire plug wiring bundles included with the device:

• Thin Red Wire: Connects to the Positive (+) side of an auxiliary 4.5V–30V DC power source to illuminate the LED display panels [RoboShop].
• Thin Black Wire: Connects to the Negative (-) side of the display source or system common ground line.
• Thin Yellow Wire: Connects directly to the specific target Positive (+) point you want to test and measure (0V to 100V DC) [RoboShop].

• Thick Red Wire: Connects directly to the Negative (-) terminal of the target Load device.
• Thick Black Wire: Connects directly to the Negative (-) terminal of the primary Power Supply source battery bank.
• CRITICAL AMMETER WIRING LAW: The ammeter loop MUST be wired exclusively in series with the Negative/Ground return leg of the target load circuit. Connecting the thick red and black wires directly across the positive and negative poles of a power supply or battery source will create a catastrophic short-circuit across the internal shunt, instantly burning out the circuit board.