KY-011 Two Color LED module

KY-011 Two Color LED module is a versatile and compact optoelectronic component designed for dual-state visual signaling in microcontroller-based projects. This module features a 5mm common-cathode LED that integrates both Red and Green emitters within a single transparent package. Consequently, users can generate Red, Green, or a blended Yellow/Amber light by varying the pulse-width modulation (PWM) signal sent to the input pins. The module simplifies circuit assembly by mounting the LED onto a sturdy PCB with pre-labeled headers. Furthermore, this design ensures high durability and easy integration with breadboards or sensor shields. Therefore, you should consider the KY-011 for any application requiring clear status indication or simple color-based feedback.

Key Features:

• Dual-Color Output: The module contains high-brightness Red and Green LEDs in a single 5mm housing, allowing for three distinct color states.
• PWM Compatibility: Users can achieve varying degrees of color mixing and brightness control by applying PWM signals to the color pins.
• Compact PCB Design: The pre-soldered board includes built-in resistors or pads, making it much more resilient than using a loose through-hole LED.
• Common Cathode Configuration: This design utilizes a shared negative terminal, which simplifies the wiring process for most standard microcontroller logic.
• High Efficiency: It operates with minimal current draw, ensuring that portable, battery-powered devices maintain a longer operational life.

Technical Specifications:

• Operating Voltage: 2.0 V to 5.0 V DC
• Forward Current (I_F): 10 mA to 20 mA
• LED Diameter: 5 mm
• Emitted Colors: Red and Green (Yellow through mixing)
• Wavelength (Red): 620 nm to 625 nm
• Wavelength (Green): 520 nm to 525 nm
• Viewing Angle: ≈ 60°

Mechanical Specifications:

• Board Material: Standard FR-4 PCB
• Pin Header: 3-pin male header with 2.54 mm pitch
• Mounting Hole: Integrated 3mm hole for secure chassis attachment
• LED Type: Common Cathode (CC) dual-color 5mm LED

Dimensions:

• Length: ≈ 19 mm
• Width: ≈ 15 mm
• Height: ≈ 11 mm (including LED height)
• Weight: ≈ 2.5 g

Pinout and Wiring:

• Pin (S): Signal input for the Green LED color. Connect to a digital or PWM pin on the microcontroller.
• Middle Pin: Signal input for the Red LED color. Connect to a digital or PWM pin on the microcontroller.
• Pin (-): Common Ground (GND). Connect this to the negative terminal of your power source.
• Wiring Note: However, always ensure you use current-limiting resistors if your microcontroller does not already have them integrated into the signal line to prevent LED burnout.

Datasheet Reference:

• Download KY-011 Two Color LED Module Datasheet

Commonly Used in:

• Arduino Learning Kits: This module is a staple in beginner electronic kits for teaching basic GPIO and PWM concepts.
• Status Indicators: Engineers frequently use it to display “Go/No-Go” status or system health in DIY control panels.
• Custom Computer Cases: It provides aesthetic lighting and power-state signaling for desktop PC modifications.

Applications:

• Process Control: Signaling the transition between “Active” (Green) and “Stopped” (Red) states in automation projects.
• Battery Level Indicators: Displaying Green for full charge and Red for low battery, consequently improving user awareness.
• Alarm Systems: Providing a visual deterrent or alert signal within residential security devices.

Equivalent Models:

• KY-029: A similar dual-color module, however, it typically features a smaller 3mm LED package.
• Keyes 2-Color LED: A direct functional equivalent often found under different branding in e-commerce marketplaces.
• Common Cathode Bicolor LED: The discrete component version of the LED found on the module, requiring manual resistor calculation.

Package Includes:

• 1 x KY-011 Two Color LED module