9mm Red Laser Diode Module 650nm 5mW – Dot Line Cross, 5–10 pcs
9mm Red Laser Diode Module 650nm 5mW – Dot Line Cross, 5–10 pcs
Get precise, vivid red laser projection with these compact 9mm Red Laser Diode Modules. Available in packs of 5 or 10, these copper-head modules emit a sharp 650nm red beam at 5mW and support three projection patterns — dot spot, straight line, and cross line — making them a versatile choice for DIY electronics, hobby robotics, alignment tools, craft cutting guides, and maker projects.
Made in Mainland China.
⚠️ Important Note: These are standard-grade (consumer-level) laser modules. They are not designed for continuous long-term operation. Please limit usage to intermittent sessions (within 30-minute cycles). If your application requires continuous, extended-duration positioning or alignment, please select an industrial-grade laser module instead.
Key Specifications
- Laser Type: Red Light Laser Module
- Wavelength: 650nm
- Output Power: 5mW
- Head Diameter: 9mm (copper head)
- Working Voltage: 3V or 5V (multiple specs available)
- Working Current: <20mA
- Spot Modes: Dot point / Straight line / Cross line
- Operating Temperature: -36°C to 65°C
- Storage Temperature: 0°C to 30°C
- Estimated Lifespan: ~1,000 hours (intermittent use)
- Pack Size: 5 pcs or 10 pcs
Why Choose These Laser Modules?
- 🔴 Sharp 650nm Red Beam — Highly visible red dot or line for accurate alignment and positioning
- ⚡ Dual Voltage Compatibility — Works with both 3V and 5V systems, ideal for Arduino, Raspberry Pi, and other microcontrollers
- 🔩 Compact Copper Head Design — Durable 9mm copper housing for easy integration into enclosures and DIY builds
- 📐 Three Spot Modes — Choose dot, line, or cross pattern to suit your specific project needs
- 📦 Multi-Pack Value — Buy in quantities of 5 or 10 for prototyping, spares, or bulk project builds
- ✅ Excellent Laser Qualities — High monochromaticity, strong coherence, outstanding directionality, and high brightness output
Ideal Applications
- DIY electronics and maker projects
- Hobby robotics and sensors
- Craft cutting and alignment guides
- Educational laser demonstrations
- Prototyping with Arduino or Raspberry Pi
- Light-based art installations
Safety Information
This product emits a visible red laser beam. Always follow safe laser handling practices. Never point the laser directly at eyes. Keep out of reach of children. For safe laser use guidelines, refer to the FDA's Laser Products and Instruments guidance.
Frequently Asked Questions
Q: What is the difference between the dot, line, and cross spot modes on these 650nm laser diode modules?
A: Each mode produces a different beam pattern. The dot mode projects a single concentrated point — great for precise targeting. The straight line mode fans the beam into a horizontal or vertical line, useful for alignment guides. The cross line mode projects both a horizontal and vertical line simultaneously, forming a cross — ideal for leveling or grid-based positioning tasks.
Q: Can I use these 9mm red laser modules with an Arduino or Raspberry Pi?
A: Yes! These modules are compatible with 3V and 5V systems, making them an excellent match for Arduino, Raspberry Pi, and similar microcontroller platforms. Simply connect to the appropriate voltage pin and a ground pin. No additional driver circuitry is required for basic on/off control.
Q: Are these laser diode modules suitable for continuous, long-duration operation?
A: No — these are standard consumer-grade modules rated for intermittent use, with an estimated lifespan of approximately 1,000 hours under normal cycling conditions. For applications requiring continuous, extended-duration operation (such as industrial alignment systems), we recommend selecting an industrial-grade laser module instead.
Q: What is the working voltage for these red laser diode modules?
A: These modules are available in 3V and 5V variants. Please select the correct voltage option for your application when ordering to ensure safe and optimal performance.