High efficiency laser with high durability, suitable for different test range requirements, stable power output from special driving circuit, OPM&OLS can test with multi wavelengths of 850nm，1300 nm, 1310nm，1550nm，1490nm and 1625nm with 26 db. It has USB port and date output with lower power consumption which can continuously operate over 200 hours. OPM and red light source are available.
