0.28inch 0-100V Three Wire DC Voltmeter Red
- Ultra-compact design with 0.28″ bright red LED display
- Measures DC voltage from 0V to 100V
- Auto decimal point adjustment for improved readability
- 3-wire connection: simple setup for single or dual power sources
- Reverse polarity protection to prevent damage
- Compatible with 5V–24V working voltage
- Ideal for battery monitoring, automotive diagnostics, and DIY electronics
65,00 EGP
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In stock
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Description
0.28″ 0–100V Three-Wire DC Digital Voltmeter – Red LED Display
This compact digital voltmeter with a bright 0.28-inch red LED display is designed to provide accurate and real-time voltage readings for a wide range of DC applications. With a simple three-wire connection, setup is quick and straightforward—ideal for hobbyists, automotive diagnostics, DIY electronics, and more.
Thanks to its built-in reverse polarity protection, accidental wiring mistakes won’t damage the device. The voltmeter automatically adjusts the decimal point for better readability:
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Below 10V: displays two decimal places (e.g., 9.58V)
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Above 10V: displays one decimal place (e.g., 48.7V)
It supports dual-source measurements, meaning it can be powered by one source while measuring another, as long as both share a common ground.
With a measurement range of 0V to 100V, this voltmeter is perfect for monitoring battery levels (in cars, motorcycles, etc.), power supplies, solar systems, or any low-voltage DC setup. For optimal safety and longevity, avoid continuous use above 30V without proper filtering, as sudden voltage spikes can cause permanent damage.
Wiring Guide:
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Red Wire: +V (Power Supply Positive)
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Black Wire: GND (Common Ground for Power Supply and Measured Source)
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Yellow/White Wire: +V (Voltage Source to Measure)
Case 1: If measuring the same source that powers the voltmeter, connect all three wires to the same source.
Case 2: If measuring another voltage source, ensure both sources share a common ground.
⚠️ Note: Display weight and dimensions may vary ±2%.
Features:
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Ultra-compact and lightweight design
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Easy 3-wire installation
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Wide input voltage range: 0V to 100V DC
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Working voltage: 5V to 24V DC
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Auto decimal point adjustment for enhanced accuracy
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Bright red LED for clear visibility
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Reverse polarity protection
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Ideal for automotive, DIY electronics, and battery monitoring
Package Includes:
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1 x 0.28″ 0–100V Three-Wire DC Digital Voltmeter – Red LED
Specification
General
Weight Weight | 0,0000 g |
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Display |
0.28-inch digital LED |
Voltage Range |
0–100V DC |
Wiring |
Three-wire connection (V+, V-, signal) |
Color |
Red display |
Operating Voltage |
Typically 4.5–30V DC |
Material |
Plastic & electronic components |
Usage |
Voltage monitoring for batteries, power supplies, DIY electronics |