Hks-va028-v2.0 [better] Jun 2026

HKS-VA028-V2.0 is a dual-display digital panel meter designed for real-time monitoring of DC voltage and current. It is commonly used in battery charging systems, DIY power supplies, and automotive electrical troubleshooting. AliExpress Key Technical Specifications HKS-VA028-V2.0 typically follows these standard specifications for the 0.28-inch dual-meter series: Measurement Ranges : DC 0 – 100V. : Up to 10A DC (internal shunt) or higher with an external shunt. Power Supply (Operating Voltage) : DC 4.5V to 30V. : Dual 0.28" LED digital tubes, usually in (Voltage) and (Current). Voltage Error Current Error Physical Dimensions : Approximately mm with a mounting cutout of AliExpress Core Features Dual Monitoring : Provides simultaneous readings of voltage and current on one screen, allowing for immediate power consumption analysis. Rapid Refresh Rate : Typically updates readings every 500ms, ensuring you see real-time fluctuations in the circuit. Flexible Wiring : Can be configured in single power source mode (powered by the system it is measuring) or dual power source mode (using an independent power supply for the meter itself). Panel Mount Design : Built for easy integration into control panels or project boxes with a snap-in mounting system. Durability : Unlike analog gauges, it has no moving parts (springs or needles), making it resistant to vibration and fatigue in harsh environments like high-performance vehicles. Common Applications Solar Power Systems : Monitoring battery bank voltage and charging current from solar panels. Automotive/RV : Troubleshooting vehicle electrical systems and tracking battery health. Bench Power Supplies : Providing a digital readout for custom-built DIY electronics power stations. or specific pinout instructions for this version?

The HKS-VA028-V2.0 is a 0.28-inch dual-display LED module designed to monitor DC voltage (0–100V) and current (0–10A) in real-time, often utilized for tracking automotive engine management systems. Engineered for high-performance environments, it features a 5-wire design and offers ±1% accuracy for electrical monitoring, withstanding high vibrations. For more information, visit AliExpress AliExpress

The HKS-VA028-V2.0 is a specific hardware revision for a popular, low-cost dual-display DC digital voltmeter and ammeter panel. This component is widely utilized by hobbyists and electrical engineers for real-time monitoring of DC power systems. Technical Specifications The HKS-VA028-V2.0 typically follows the standard footprint of 0.28-inch dual LED display modules. Voltage Measurement Range: DC 0V – 100V Current Measurement Range: Usually 0A – 10A (direct) or up to 100A (with an external shunt) Display: 0.28-inch digital LED tube (typically Red for voltage, Blue for current) Operating Voltage: DC 4V – 30V (The unit itself requires power to function) Accuracy: ±1% (precision is often higher for low voltages) Refresh Rate: Approximately 300ms–500ms per reading Dimensions: Roughly 48mm x 29mm x 26mm (standard panel cutout size) Wiring and Pin Configuration The V2.0 revision often features a 5-wire setup, split into two main connectors for power and measurement. 1. Power Supply Connector (3-wire, thin) Thin Red: Positive supply for the meter itself (4V – 30V DC). Thin Black: Negative supply (ground) for the meter. Thin Yellow/White: Voltage sensing lead. This connects to the positive terminal of the load you want to measure. 2. Current Measurement Connector (2-wire, thick) Thick Red: Current input (connects to the negative side of the load). Thick Black: Current output (connects back to the negative terminal of the power source). Note: This module measures current on the low-side (negative rail). High-side measurement requires different wiring or isolation. Key Features of Revision V2.0 Compared to earlier versions like the V1.0, the HKS-VA028-V2.0 often includes: Reverse Polarity Protection: Prevents the device from burning out if the power supply wires are swapped accidentally. Calibration Potentiometers: Located on the back of the PCB, these allow you to fine-tune the voltage and current readings against a known accurate multimeter. Integrated Shunt: Units rated for 10A generally have a built-in shunt on the board, making them "plug-and-play" for low-current applications. Common Applications 💡 Bench Power Supplies: Add digital readouts to DIY adjustable power sources.💡 Battery Monitoring: Track the charge and discharge rates of 12V/24V solar battery banks.💡 RC Hobby Gear: Monitor current draw in drone or RC car battery systems.💡 Industrial Panels: Compact monitoring for 24V or 48V DC control cabinets. Troubleshooting & Safety Overvoltage: Never exceed 30V on the thin red wire; doing so will likely destroy the internal regulator. Shunt Requirement: If using a 50A or 100A version, you must use an external shunt . Powering it without one can cause the display to malfunction or the board to burn. Common Ground: Ensure that the negative of the power supply and the negative of the measurement system share a common ground if they are separate sources. If you are looking to purchase this module or find specific wiring diagrams, retailers like AliExpress or Amazon frequently stock the HKS-VA028-V2.0 under generic "Dual Digital Voltmeter Ammeter" labels. To provide more tailored information, could you tell me: Are you installing this into a specific project (like a solar setup or power supply)?

Here is the informative text regarding HKS-VA028-V2.0 . hks-va028-v2.0

Product / Document Identifier: HKS-VA028-V2.0 HKS-VA028-V2.0 is a specific versioned identifier typically associated with technical documentation, firmware, or a hardware revision for an automotive electronics component manufactured by HKS (Hayashi-Koyoshi Seisakusho) , a leading Japanese aftermarket performance parts company. Based on HKS’s product naming conventions, this identifier most likely corresponds to a Valve Controller or a related electronic boost control accessory, specifically the HKS EVC (Electronic Valve Controller) series. Key Context & Interpretation

HKS Division: Refers to HKS’s Electronics Division, which produces boost controllers, knock monitors, turbo timers, and data loggers. VA028: This is the core model or part number. The “VA” prefix commonly denotes a Valve Assembly or Valve Actuator component within a boost control system. It may represent a stepper motor valve unit (e.g., for the EVC-S or EVC 6/7 series). V2.0: Indicates Version 2.0 . This could mean:

A hardware revision of the valve unit (e.g., improved solenoid design, connectors, or weather sealing). A firmware version for a compatible control unit. A revision of the installation manual or wiring diagram for that specific valve. HKS-VA028-V2

Typical Technical Specifications (If a Valve Unit) If HKS-VA028-V2.0 is a boost control solenoid valve, its likely characteristics include:

Type: High-speed stepper motor or PWM (Pulse Width Modulation) solenoid. Function: Precisely controls wastegate actuator pressure to regulate turbocharger boost levels. Compatibility: Designed for use with HKS EVC controllers (EVC 6, EVC 7, EVC-S, or EVC 8). Improvements in V2.0: Likely faster response time, reduced power draw, improved heat resistance, or revised electrical connector pinout compared to V1.0.

Common Applications

JDM (Japanese Domestic Market) turbocharged vehicles (Nissan Skyline GT-R, Subaru WRX STI, Mitsubishi Lancer Evolution, Toyota Supra, etc.). Aftermarket high-boost setups requiring stable, electronic boost control.

Usage Notes