An auto-off feature saves battery power. Low-battery indicator reminds you to recharge the battery. A single-output connector provides stable power at dual wavelengths. An LCD backlight enables you to work in the dark. Includes FC connector. Compact unit is lightweight and easy to carry. Light sources are available in basic and deluxe models for single-mode and multimode cable. Works with our Basic Fiber Optic Power Meter (FOPM-100) to measure optical loss.