The 650nm 5mW Red Dot Laser Module is a compact, high-efficiency optical sensor component enclosed in a durable copper shell. It projects a bright, visible red dot that is highly useful for positioning, alignment, level sensing, and security trip-wire systems. The standout feature of this module is its threaded plastic lens front, which lets you manually fine-tune the focal point to achieve the sharpest possible dot regardless of your targets distance.
Adjustable Focal Length: Easily twist the front lens head to focus the beam into a tiny, concentrated dot or expand it into a wider indicator.
Rugged Copper Casing: The metal shell acts as a mini heatsink, ensuring stable performance during continuous operation.
Easy Integration: Simple 2-wire interface (Red = Positive, Black = Negative) makes it fully compatible with Arduino output pins, relays, or direct battery connections.
Safe 5mW Power: Operates within the safe Class 3R/3a limit, making it ideal for student labs and educational robotics.
| Feature | Specification |
| Laser Color | Red |
| Wavelength | 650 nm |
| Output Power | 5 mW |
| Operating Voltage | 3.0V to 5.0V DC |
| Operating Current | < 40 mA |
| Beam Shape | Dot (Adjustable/Focusable) |
| Housing Material | Copper / Brass |
| Dimensions | 6mm (Diameter) x 18mm (Length) |
| Wire Length | Approx. 70mm 100mm |
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