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无标题文档 Title： Focusable 940nm Infrared IR Adjusted Laser Dot Diode Module 3V-5V with TTL 0-15KHz 12x40mm Laser Wavelength: 940nm Output Power: 120mW Operating voltage: 3.0-5.0VDC Continuous current: 2.5V ON/<1.6V OFF, High open low off , Normal status closeTTL Output: 0-15KHZ square wave Red Wire: Power supply "+" Black wire: Power supply"-" (common negative pole for power supply and TTL ) Yellow Wire: TTL "+" Details: 1.This 940nm laser module with driver built-in is an industrial electronic component and used for Industrial testament, Lab.2.TTL Output 0-15KHz square wave,genearted by a signal generator or CPU,If you don't use TTL modulation, then you can parallel the yellow wire and red wire to become the positive + pole of the power supply, then the laser is on continuously.4.Can be combined with silicon photocell to make a transmitting and receiving components5.The Laser Dot size is adjustable.6.This is 940nm laser module with a driver built-in is an industrial electronic component and used for industrial testament, Lab.The laser module is and precise and sensitive optical instrument. Before carrying on some laser DIY activities, please read about the technical information first and protect your eyes before laser ray. Be sure the operator has experience in optics DIY or testing.7.It is IR laser,the laser light cannot be seen by human bare eyes with only using DDC/infrared camera get it.Buyers who buy IR lasers please make sure you know it. The 940nm Laser is invisible, but can be seen by 940nm display board, it will be displayed as a green dot on the board. Please check here for the board: Package: 1x940nm 120mW Infrared IR Dot Laser 3-5VDC 12mm Diode Module with TTL 0-15KHZ On Aug-16-21 at 02:15:30 PDT, seller added the following information: