1. Introduction
Thank you for choosing EDGELEC 3mm Green Blinking LED Lights. This manual provides essential information for the safe and effective use of your LED diodes. These pre-wired LEDs are designed for various electronic projects, DIY hobbies, and decorative lighting applications, offering a convenient 1.5Hz single-color flashing effect at 12V DC.

Image 1.1: A pack of 30 pre-wired 3mm green blinking LED lights, showcasing their compact size and attached wires.
2. Setup and Installation
These LED lights come pre-wired with a built-in 1/4W metal film resistor, making them ready for direct connection to a 12V DC power source. No additional resistors are required.
2.1 Identifying Wires
Each LED features two wires for connection:
- Green Wire: Anode (Positive +)
- Black Wire: Cathode (Negative -)

Image 2.1: Close-up view of multiple pre-wired LEDs, showing the green wire for the anode and the black wire for the cathode, simplifying polarity identification.
2.2 Connecting to Power
- Ensure your power source is a stable 12V DC.
- Connect the green wire (Anode) of the LED to the positive (+) terminal of your 12V DC power supply.
- Connect the black wire (Cathode) of the LED to the negative (-) terminal of your 12V DC power supply.
- Verify all connections are secure to prevent short circuits.

Image 2.2: Illustration of the preloaded 0.25 Watt metal film resistor integrated into the LED wiring, ensuring stable operation at 12V voltage.
The wires are 7.8 inches long and feature 7-core pure copper with tin-coat at the end for ease of welding and connection.

Image 2.3: Detailed view of the 7.8-inch wire lead, highlighting the 7-core pure copper construction and tin-coated ends designed for simplified welding.
3. Operating Instructions
Once properly connected to a 12V DC power source, the 3mm Green Blinking LED will automatically begin flashing at a frequency of 1.5Hz (approximately 90 blinks per minute).
3.1 Blinking Functionality
The blinking function is integrated into the LED design and does not require external control. The LED will flash continuously as long as it receives the correct voltage.

Image 3.1: A visual representation of the blinking LED, emphasizing its 1.5Hz single-color flashing capability, which translates to 90 blinks per minute.
4. Maintenance and Care
These LEDs are designed for long-term use with a lifespan exceeding 20,000 hours. Minimal maintenance is required.
- Keep the LEDs and connections dry and free from dust.
- Avoid exposing the LEDs to extreme temperatures or harsh chemicals.
- Do not exceed the recommended 12V DC input voltage.
5. Troubleshooting
5.1 LED Not Lighting Up
- Check Power Connection: Ensure the green wire is connected to positive (+) and the black wire to negative (-).
- Verify Voltage: Confirm your power source provides a stable 12V DC.
- Inspect Wires: Check for any breaks or loose connections in the wiring.
- Test Individual LED: If multiple LEDs are connected, test them individually to identify any faulty units.
5.2 Irregular Blinking
- Stable Power: Ensure the 12V DC power supply is stable and not fluctuating.
- Overheating: While unlikely for individual LEDs, ensure adequate ventilation if used in an enclosed space.
6. Product Specifications
Refer to the table below for detailed technical specifications of the EDGELEC 3mm Green Blinking LED Lights.

Image 6.1: A comprehensive table detailing the specifications for various 3mm LEDs, including forward voltage, current, luminous intensity, wavelength, and viewing angle. Note that this product specifically refers to the Green Blinking LED.
| Feature | Detail |
|---|---|
| Brand | EDGELEC |
| Model Number | ED_DLP03C |
| Light Type | LED |
| LED Size | 3mm |
| Light Color | Green |
| Special Feature | Blinking (1.5Hz Single Color Flashing) |
| Voltage | 12 Volts (DC) |
| Forward Current | 20mA |
| Wire Length | 7.9 inches (200mm) |
| Wire Type | 7-Core Pure Copper, Tin-Coated Ends |
| Resistor | Preloaded 1/4W Metal Film Resistor |
| Lifespan | 20,000+ hours |
| Viewing Angle | 30° |
| Material | Metal |

Image 6.2: A technical drawing providing precise dimensions of the 3mm LED and its integrated wire leads, with measurements indicated in millimeters.
7. Applications
These versatile LEDs are suitable for a wide range of uses, including:
- DIY Hobby Projects
- Electronic Circuitry and Prototyping
- Decorative Lighting
- Instructional Displays
- Model Building and Miniatures

Image 7.1: A collage showcasing diverse applications of pre-wired LEDs, from intricate circuit boards to festive holiday lighting and outdoor decorations, highlighting their adaptability.
8. Warranty and Support
For warranty information or technical support, please refer to the official EDGELEC website or contact your retailer. Keep your purchase receipt for any warranty claims.
9. Safety Information
- Always ensure correct polarity when connecting the LEDs to avoid damage.
- Do not apply voltage higher than 12V DC.
- Handle with care to prevent damage to the LED leads or lens.
- Keep out of reach of children.