Part of EXFO’s 600 handheld series, the FLS-600 Light Source is designed for first-class versatility—offering laser and LED models with various wavelength options. It supports automatic wavelength switching, distant referencing, is FTTx-ready (1310 nm, 1490 nm and 1550 nm), and is built for rugged field use with a backlit keypad/LCD. When used with a compatible power meter (Optical Power Expert/PX1-PRO), the power meter recognizes the active wavelength and switches to the proper calibration parameter.