Product Description (Detailed):
Add precision and visual flair to your electronic creations with our compact and efficient Laser Diode Module 5V 650nm 6mm – a 5mW Mini Red Laser Dot Module. This widely used component is a favorite for hobbyists, educators, and engineers due to its ease of use, small footprint, and bright, focused red laser output. Operating directly from a standard 5V DC power supply, it's perfectly compatible with popular microcontrollers like Arduino, Raspberry Pi, and various other development platforms.
This mini red laser dot module emits a highly visible red laser beam at a wavelength of 650nm, ideal for various applications where a clear point of light is required. With an output power of 5mW, it's a Class IIIa laser, generally considered safe with caution, but direct eye exposure should always be avoided. The compact 6mm brass housing makes it easy to integrate into tight spaces, while its pre-wired design simplifies connection. Many variants include an internal current-limiting resistor, meaning you can directly connect it to your 5V power source without needing additional external components, making setup quick and hassle-free.
Common applications for this versatile laser diode module include precise positioning systems, laser pointers for presentations, DIY laser security tripwires, automatic light triggers, distance measurement projects, robotic navigation systems (e.g., for target indication), and educational demonstrations of optics. Its ability to create a clear, defined red dot makes it invaluable for alignment tasks and visual indicators. Whether you're building a new robot, designing an interactive display, or experimenting with optical sensing, our 5V 650nm 6mm laser module provides a reliable, cost-effective, and impactful solution for adding laser precision to your projects. Remember to always practice laser safety when operating any laser device.
The 650nm 5V Mini Laser Diode Module is a tiny, highly efficient laser light source that emits a visible red dot ideal for use in educational electronics, DIY alignment tools, smart laser pointing, and Arduino-based automation systems.
With an operating voltage of 5V, this laser module can be directly connected to Arduino, ESP32, Raspberry Pi, or any microcontroller with GPIO output. The integrated driver circuit ensures consistent laser brightness and protection from overcurrent.
Its 6mm brass body allows for simple panel or bracket mounting in compact devices. It's commonly used in object tracking, obstacle detection, smart laser pointer setups, and IR sensors (paired with LDRs or photodiodes).

Key Features:
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Laser Wavelength: 650nm (visible red)
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Output Power: 5mW (Class IIIa laser)
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Operating Voltage: 5V DC
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6mm brass cylindrical housing for easy mounting
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Built-in driver circuit for stable output
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Ideal for Arduino laser experiments, robotics, and laser alignment
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Low power consumption and lightweight
Technical Specifications:
Parameter |
Specification |
Wavelength |
650nm (red) |
Output Power |
5mW |
Operating Voltage |
5V DC |
Operating Current |
<40mA |
Laser Type |
Class IIIa Visible Red Laser |
Housing Diameter |
6mm (brass casing) |
Beam Shape |
Dot |
Focus |
Pre-focused (non-adjustable) |
Operating Temperature |
-10°C to +50°C |
Cable Length |
~10–20 cm (varies by model) |
How to Use:
Arduino Wiring:
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VCC (Red wire): Connect to Arduino 5V pin
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GND (Black wire): Connect to GND
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Laser On/Off Control (Optional): Use an NPN transistor or MOSFET to control the laser using a digital pin