Features: This is a 2.5W laser module that could give out 445nm blue laser light. Large heat sinks and cooling fan ensure better heat dissipation during work. Support continuous light output working mode and can work for long time. This module comes with power adapter for convenient use. Suitable for industrial laser engraving machine equipment, great for DIY laser engravers. Specifications: Laser Wavelength: 445nm (blue) Output Power: 2500mW (2.5W) Driving Mode: External ACC constant current drive Power Supply Voltage: 12VDC AC Adaptor Plug: US AC Adaptor Input Voltage: 100-240V Lens Material: Optical glass with coating Light Form: Dot, adjustable-focus Modulation: TTL PWM Control: Support Other Function: Weak light positioning Note: 1. Please wear laser goggles during usage, avoid to touch the laser directly to the eyes and skin. 2. The laser module should works less than half an hour in one time, and continue to work when it cool down please. Package Includes: 1 x Laser Module 1 x AC Adaptor with US plug 1 x Power Cable Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.