Green Circular Dot Laser Module Vlm-520-60 Lpo, Class 1, Operating Voltage 3~6 APPLICATIONS: Green Circular Dot Laser Module - for machine vision, automation industry, image processing, scanning and counting...etc. Automotive industry. Medical science. Measurement. High-Quality Manufacturing: Designed and built in Taiwan, ensuring superior performance and durability. Integrated Optics and Electronics: Built-in APC (Automatic Power Control) Driver Circuit maintains stable and safe laser output power) and Aspherical Glass Lens (provides a tight and precise dot across a wide temperature range). Extremely Small Circular Dot: Maintains a sharp, precise dot within 1 meter. Ideal for applications requiring high accuracy. Robust Construction: Stainless Steel Housing enhances durability and resistance to environmental factors. Specifications: Dimensions: O10 x 40 mm (O0.39" x 1.575"), Wavelength: 515~530 nm, Laser Output Power: Class 1 ? Less than 0.39mW Eye-Safe, Beam Divergence (Full Angle): 0.4 mRad, Operating Voltage: 3~6 VDC This low-power precision laser designed for applications that require a small, stable, and highly visible dot at close to mid-range distances. Here are some of its most suitable applications: Machine Alignment, Positioning Systems, Survey Equipment Calibration, Reference Marking, Optical Instrument Testing, Optical Experiments, Beam Alignment, Medical Device Alignment and Laser Therapy and Low-Level Light Therapy (LLLT)