Product Overview
The Dual LED Module is a compact and versatile indicator board featuring two independent LEDs with built-in current-limiting resistors. Designed for quick integration into electronic projects, it provides a simple way to visualize digital signals, system states, or outputs.
 
With a common ground and two control pins, this module is ideal for microcontroller interfacing, debugging, and educational applications.
 
Key Features
Two Independent LEDs – Control each LED separately
Built-in Current Limiting Resistors (220Ω) – No external components required
3-Pin Interface – Simple and clean wiring
Wide Voltage Compatibility – Works with 3.3V to 9V inputs
Compact & Ready-to-Use Module
Standard 2.54mm Header – Easy connection using jumper wires
Clear Status Indication – Ideal for debugging and monitoring
 
Use Cases
Output status indication
Debugging digital signals
Microcontroller GPIO testing
Mode/status display in embedded systems
Robotics and automation feedback
Educational experiments
 
Advantages
No external resistors required
Clean and compact alternative to breadboard LEDs
Reduces wiring complexity
Reusable and robust design
 
Application Examples
Power and status indicators
Sensor output visualization
Arduino/ESP GPIO testing
FPGA output verification
Logic signal monitoring
Traffic light or basic indication systems
 
Package Includes
1 × Dual 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
Each LED is connected with a 220Ω current-limiting resistor, allowing safe operation across a range of voltages.
Applying HIGH (VCC) to pin 1 → LED 1 turns ON
Applying HIGH (VCC) to pin 2 → LED 2 turns ON
Both can be controlled independently or simultaneously
 
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