0.36 Inch DC 0100V 3Wire Mini LED Voltage Meter
Compact Digital Panel Voltmeter for DC Monitoring
This mini 0.36 inch LED display voltmeter measures DC voltage from 0V to 100V using a simple 3-wire connection. It provides clear digital readout for battery monitoring, power supply testing, and DIY electronics projects.
Wide 0100V Range Monitors various DC voltage levels
Compact Size - 0.36 inch LED fits tight spaces
Operating voltage is 3.5V to 30V for meter power
Use a separate power source for high-voltage measurement
Do not exceed 100V input on measurement leads
Technical Specifications
| Parameter | Value |
|---|
| Display | 0.36 inch LED |
| Voltage Range | 0V to 100V DC |
| Power Supply | 3.5V to 30V DC |
| Wiring | 3-Wire (VCC, GND, Test) |
| Color | Red / Blue / Green |
| Accuracy | ±0.5% |
| Dimensions | 22mm x 12mm x 7mm |
= Key Features =
Universal DC Measurement - 0V to 100V range
Internal Reference Voltage - No external components needed
Wide Power Supply Range - Can power from monitored source or separate power
Power Reverse Protection - Prevents damage from wrong polarity
Suitable for Car/Motorcycle - Works with 12V and 24V systems
Mini Display - Easy to install in panels
= Applications =
- Battery voltage monitoring
- Power supply output indication
- Solar panel system voltage display
- Car and motorcycle battery check
- Uninterruptible power supply monitoring
- DIY electronic projects
Versatile Use - Monitors many DC systems
Clear Display - Large enough for easy reading
√ Mountable panel hole or module
√ Self-contained module
√ Great for portable or panel projects
Connection Guide
Three wires:
- Red wire: VCC (3.5V to 30V positive power)
- Black wire: GND (Ground)
- Yellow wire: Test (Measuring lead, 0V to 100V)
Connecting with a common ground:
- Connect red to positive supply
- Connect black to negative supply
- Connect yellow to point to measure voltage
- The meter will display voltage reading
If measuring less than 30V, you can use the same power source
Use a separate power supply for measuring above 30V
Never exceed 100V on the yellow test lead
Double-check wire polarity before connecting
Using with Various Voltage Systems
Low-voltage (3.5V to 30V):
- Power directly from the circuit you are measuring
- Connect red and yellow wires together
- Black to ground
High-voltage (30V to 100V):
- Use a separate 4-30V power supply for the red/black wires
- Connect yellow wire to the circuit under test
Internal Voltage Reference - Uses 2.5V reference for measurement
Good for High Voltage Applications - Up to 100V
Common in car battery monitoring
Also used with solar battery systems
√ Built-in protection against reverse polarity
√ Good accuracy within the range
Troubleshooting
No display:
- Check power supply to red/black wires
- Ensure voltage is within 3.5V to 30V
- Avoid reverse polarity connection
Display reads "0V" or no change:
- Check yellow test lead connection
- Ensure voltage is above 1V
- Avoid loose contact
Inaccurate reading:
- Measure voltage directly with a multimeter
- Check for electrical noise
- Avoid voltage drop in test leads
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