The USB-L from Power Technology Inc. are USB Powered Lasers that operate at a wavelength of 405 nm - 1550 nm. They deliver an output power of 4.5 mW - 300 mW and have a beam size of up to 4.90 mm x 5.88 mm. These laser modules have round or elliptical beam shape configurations and can be controlled via USB 1. x or USB 2. x. interfaces. They belong to class 2 - 3B lasers and use a custom graphical user interface to control the power level and on/off state. These laser modules require a DC supply voltage of 4.75 V - 5.5 V and consume a maximum of 145 mA USB current. They are available in a round or square module that measures 1.13 (L) x 63 (Ø) and are ideal for alignment, positioning, leveling, event detection, edge detection, security, vision systems, metrology, bar code readers, education, robotic control, and laboratory or test operations applications.