0.28inch 0-100V Three Wire DC Voltmeter – Red LED
The 0.28inch 0-100V Three Wire DC Voltmeter Red – Red LED edition is a compact, versatile, and accurate digital display module designed to measure DC voltages up to 100V. Its bright red LED display ensures clear readability in different lighting conditions, making it ideal for automotive, DIY electronics, and laboratory use.
Wiring this 0.28inch 0-100V Three Wire DC Voltmeter Red is straightforward: connect the red wire to the positive supply, the black wire to the negative supply (also used as the negative of the measurement source), and the yellow/white wire to the positive of the measurement source. Built-in reverse polarity protection ensures that incorrect wiring won’t damage the module.
🔧 Key Features
- 0.28-inch ultra-compact LED panel meter
- Wide voltage range: 0–100 VDC
- Three-wire connection for simple installation
- Bright red LED for high visibility
- Auto decimal adjustment for precision display
- Reverse polarity protection for safety
📐 Technical Specifications
| Product Name | 0.28inch 0-100V Three Wire DC Voltmeter – Red LED |
| Display Size | 0.28 inch LED panel |
| Voltage Range | 0–100 VDC (recommended safe continuous use ≤30V) |
| Connection Type | Three-wire system (Red: +V, Black: –V, Yellow/White: + measurement) |
| LED Color | Red |
| Current Consumption | Less than 10 mA |
| Accuracy | ±0.1 V |
| Refresh Speed | Approx. 200 ms per reading |
| Auto Decimal Display | 2 decimals below 10V, 1 decimal above 10V |
| Operating Voltage | 5V – 24V DC recommended |
| Protection | Built-in reverse polarity protection |

📌 Applications
- Battery monitoring in motorcycles, scooters, and cars
- Testing DC power supplies in labs and workshops
- Voltage measurement in RC models and drones
- DIY electronics and embedded circuits
- General DC system diagnostics
💡 Why Choose This Product?
The 0.28inch 0-100V Three Wire DC Voltmeter Red offers precision, compact design, and built-in safety. With features like auto decimal adjustment, reverse polarity protection, and low current draw, it is a reliable choice for anyone working with DC circuits.
📦 Package Includes
- 1 × 0.28inch 0-100V Three Wire DC Voltmeter – Red LED









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