The Smallest Ever 0.5 Inch OLED Digital Voltmeter 0-30V Ultra Thin High Precision 2/3 Wire New Arrival

High-concerned chemical : None Origin : Mainland China

Innovative Mini OLED Voltmeter – The Smallest Ever in the MarketUpgrade your voltage monitoring with this brand new 0.5-inch ultra-compact OLED digital voltmeter. Designed for space-limited projects, it’s smaller than your finger and replaces traditional bulky digital tubes with modern OLED technology.Key FeaturesThe Smallest Ever DesignUltra-thin version: 15×18×3.2mmRegular version: 15×18×4.2mmTiny body fits almost anywhere – ideal for cars, motorcycles, DIY electronics, and small devices.Innovative OLED Display0.5-inch high-brightness white OLED screen3-digit display with automatic decimal point shiftClear and easy to read, much better than old LED digital tubesHigh Precision MeasurementHigh accuracy: 0.08%Measurement error: ±0.7%Wide measuring range: DC 0–30VWorking voltage: DC 3.5–30VWorking current: <20mARefresh rate: 5Hz (default) / 10Hz (short B)2-Wire & 3-Wire Connection Modes2-wire mode: Power and measurement share the same input (3.5–30V) 3-wire mode: Independent power supply, supports 0–30V full range measurement Function ConfigurationShort A: Turn off “V” symbol display Short B: Switch refresh rate from 5Hz to 10Hz Wiring Diagram2-Wire ConnectionG → NegativeV & V+ → Positive3-Wire ConnectionG → Common negativeV → Power positiveV+ → Measured positiveApplication ScenariosCar & motorcycle battery monitoring DIY electronics & Arduino projects Power supply testing Battery packs and portable devices Industrial control and small equipment SpecificationsDisplay: 0.5 inch OLED white 3-digit Measure range: DC 0–30V Supply voltage: 3.5–30V Accuracy: 0.08% Size: 15×18×3.2mm / 15×18×4.2mm Connection: 2-wire / 3-wire Package Includes1 × Mini OLED Digital Voltmeter