405nm Blue Purple Laser Engraving Machine Parts with TTL for DIY 3D Printer & Industrial$$Art & Craft

Wavelength: 405nm; Beam Shape: Dot (focusable); Laser Interface: 2-Pin; Cooling: fan. Size:33 × 33 × 65mm; Line length: 40cm; Current: Power Supply: Adapter : DC 12V 5A; Battery: 3pcs AA 1.5V. TTL: 0-2.5V open, 2.5V-5V off, only can control the laser switch. After sale guarantee:We will resend a new product to you ,if the product has a problem within 3 months, besides connection the reverse line or cut the line, please contact us by Amazon e-mail.