Product Overview
The Single LED Module is a compact and reliable indicator board designed for simple visual output in electronic circuits. It features one LED with an onboard current-limiting resistor, making it a plug-and-play solution for beginners and professionals alike.
 
This module is perfect for signal indication, debugging, and testing, eliminating the need for external resistors or breadboard wiring.
 
Key Features
Single LED Indicator – Clear visual output for digital signals
Built-in Current Limiting Resistor (220Ω) – Safe operation without extra components
2-Pin Interface – Minimal and easy connections
Wide Voltage Support – Works with 3.3V to ~9V
Compact & Ready-to-Use Design
Standard 2.54mm Header – Compatible with jumper wires
Low Power Consumption & Reliable Operation
 
Use Cases
Digital output indication
Power/status indicator
GPIO testing and debugging
Embedded system feedback
Educational experiments
Simple visual alerts
 
Advantages
No external resistor required
Extremely easy to use (plug-and-play)
Compact and clean design (no breadboard needed)
Reduces wiring errors
 
Application Examples
LED blink projects
System ON indicator
Sensor output visualization
FPGA/Arduino output testing
Logic level indication
 
Package Includes
1 × Single LED Module (Pre-assembled)
1 x 3 pin header(un-soldered)
 
Compatibility
Works with:
Arduino (UNO, Nano, Mega)
ESP8266 / ESP32
8051 Microcontrollers
Raspberry Pi GPIO
FPGA boards (Basys 3, Tang Nano, etc.)
Any digital output system
 
Working Principle
The module consists of an LED connected in series with a 220Ω resistor, ensuring safe current flow.
Apply HIGH (VCC) to the signal pin → LED turns ON
Apply LOW (GND) → LED turns OFF
The module can be driven directly by:
Microcontroller GPIO pins
Power supply (for basic indication)
 
Notes:
Ensure correct polarity when supplying voltage
Avoid exceeding recommended voltage for long-term use. 
For long-term use, keep the voltage within 3.3V/5V range.
For PWM applications, brightness can be controlled via duty cycle
 
Weight = 1 grams
Dimensions = 1.5 cm x 1.5 cm x 1 cm