Driving Mode: External ACC constant current drive. AC Adaptor Input Voltage: 100-240V. Lens Material: Optical glass with coating. Please wear laser goggles during usage, avoid to touch the laser directly to the eyes and skin.The laser module should works less than half an hour in one time, and. 1 x AC Adapter with US plug. The item "450nm 15W Laser Module With Heatsink Fan Support TTL/PWM for DIY Laser Engraver HF" is in sale since Friday, April 19, 2019. This item is in the category "Business & Industrial\Printing & Graphic Arts\Screen & Specialty Printing\Engraving". The seller is "homefunnytime" and is located in HONGKONG. This item can be shipped worldwide.