Description: KC-304 Handheld optical light source series laser source offer good stability and portability for fiber optic testing. It can provide 1 to 4 wavelength export according to the specific requirements including 650nm, 850nm, 1300nm, 1310nm, 1490nm, 1550nm and 1625nm. And it works at a variety of modulation frequency (CW, 270Hz, 1KHz, 2KHz). It is widely used in optical fiber communication, CATV, optical fiber sensors, optical information processing field. It is an important fiber optical testing instrument in scientific research and engineering. Features: Good Stability in output power Large LCD display and Backlight Display Battery Power Display