Jamaican Black Castor Oil

DescriptionWhen a project requires precision alignment, long-distance optical communication, or targeted beam-breaking security, standard infrared and visible LEDs are insufficient due to light diffusion. The 5mW Red Laser Diode solves this by emitting a tight, collimated beam of light that stays focused over long distances.Whether you are designing a custom photoelectric security barrier or prototyping an interactive laser-harp installation, this compact module provides a simple, plug-and-play laser source for your hardware workbench.Plug-and-Play PowerUnlike raw, bare laser diodes that require complex external constant-current driver circuits to prevent them from burning out, this module is entirely self-contained. The tiny PCB mounted at the rear of the brass cylinder includes a built-in current-limiting resistor. This means you can power the red and blue wires directly from any standard 3V to 5V DC power supply or battery pack.Microcontroller IntegrationBecause the module draws a relatively low current (typically between 20mA and 40mA), it can often be driven directly from a standard Arduino digital I/O pin. By programming the pin to pulse HIGH and LOW, you can easily use this laser to transmit binary data across a room to a waiting photoresistor (LDR) or photodiode receiver.Safety Warning (Class IIIa Laser)While 5mW is considered a low-power laser suitable for hobbyist electronics, it is still highly concentrated light. Never look directly into the laser beam, and never point it at anyone’s eyes, vehicles, or aircraft. Always ensure your laser projects are firmly mounted and pointed at non-reflective, diffuse surfaces during testing.Key Features:Durable Brass Housing: The metallic cylinder acts as a natural heatsink, extending the life of the silicon diode during continuous operation.Integrated Focusing Lens: The acrylic lens at the front of the brass housing ensures the red dot remains tight and highly visible.Flexible Wiring: Comes pre-soldered with flexible silicone-coated wires for easy breadboarding or permanent installation.Technical Specifications:Wavelength: 650nm (Visible Red)Output Power: < 5mWOperating Voltage: 3V to 5V DCOperating Current: < 40mABeam Pattern: DotDimensions: ~6mm (Outer Diameter) x 10mm (Length, excluding PCB and wires)Lead Length: ~7cmIdeal Applications:Photoelectric “beam-break” security tripwires (when paired with an LDR)DIY optical leveling tools and robotic alignment systemsAudio/Data transmission via light (Optical UART)Interactive art installations and sensor-triggered displays