Fiber Optical Laser Source 1.Handheld type 2.Wavethlength:1310,1550nm 3.Suitable for FC, SC, ST connector 4.Large LCD Fiber Optical Laser Source (NF ... 2. CW, 0HZ modulation output at 650nm , and CW, 270Hz, 1KHz,2KHz modulation output at other wavelengths.3. High stability of ... the output power4. FC/PC or other type connectors ...