0-100V DC Digital Voltmeter 0.56-Inch Red LED – 3 Wire
Original price was: 110.00 EGP.75.00 EGPCurrent price is: 75.00 EGP.
The 0-100V DC Digital Voltmeter features a bright 0.56-inch red LED display and a three-wire connection for monitoring DC voltage. It uses separate power and measurement wires, making it suitable for batteries, DC power supplies, vehicles and electronic projects.
The display supply must remain within its operating range, even when measuring voltages up to 100V.
0-100V DC Digital Voltmeter
The 0-100V DC Digital Voltmeter is a compact panel-mounted display for monitoring direct-current voltage. It features a bright 0.56-inch red LED display that provides clear readings in electronic equipment, battery systems and DIY projects.
Unlike a two-wire voltmeter, this model uses three wires. One wire powers the display, one provides the common negative connection and the third measures the target voltage. Therefore, the display can use a suitable low-voltage supply while measuring a separate DC voltage up to 100V.
Main Features
- DC voltage measurement from 0 to 100V
- Bright red LED display
- Large 0.56-inch digits
- Three-digit, seven-segment display
- Three-wire connection
- Separate display-power and measurement inputs
- Compact panel-mount design
- Low power consumption
- Easy to install in custom enclosures
- Suitable for continuous voltage monitoring
- Useful for batteries and DC power systems
- Reverse-polarity protection may vary by production batch
Technical Specifications
| Specification | Value |
|---|---|
| Product Type | Digital DC voltmeter |
| Measurement Range | 0–100V DC |
| Display Type | Three-digit LED |
| Digit Size | 0.56 inch |
| Display Colour | Red |
| Number of Wires | 3 |
| Typical Display Supply | 4.5–30V DC |
| Typical Accuracy | Approximately ±1% |
| Typical Current Consumption | Less than 25mA |
| Measurement Type | DC voltage only |
| Installation | Panel or enclosure mounting |
Three-Wire Connection
The most common wire configuration is:
| Wire Colour | Function |
|---|---|
| Red | Positive supply for the display |
| Black | Common negative or ground |
| Yellow | Positive voltage-measurement input |
Wire colours can vary between manufacturers. Therefore, check the labels or product documentation before connecting the display.
Measuring the Same Power Source
When the measured voltage is between approximately 4.5V and 30V, the display can usually be powered from the same source.
Connect the red and yellow wires together to the positive terminal. Then, connect the black wire to the negative terminal.
Measuring a Separate 0-100V Source
To measure a voltage outside the display’s supply range, power the display from a separate 4.5–30V DC supply.
Connect the red wire to the positive terminal of the display supply. Connect the black wire to the common negative terminal. Finally, connect the yellow wire to the positive terminal of the voltage being measured.
The display supply and measured circuit must share a suitable common ground unless the specific application uses electrical isolation.
Common Applications
The 0-100V DC Digital Voltmeter is suitable for:
- Battery-voltage monitoring
- DC power supplies
- Solar-energy projects
- Automotive electrical systems
- Motor-controller panels
- Battery chargers
- Laboratory equipment
- DIY electronics
- Distribution panels
- Robotics and automation systems
Important Safety Information
The 100V rating refers to the measurement input, not the display’s power input. Never connect the red supply wire directly to 100V unless the specific product documentation explicitly permits it.
This voltmeter measures DC voltage only. It must not be connected directly to AC mains electricity. Also, verify polarity before applying power to prevent damage to the meter or connected equipment.
