Optical Wavelength KF7XMS Fiber OWL 7 series fiber optic link certifiers are high-accuracy, high-resolution, microprocessor-controlled optical power meters capable of performing a wide variety of testing applications, from basic optical loss measurement up to dual-wavelength fiber link certification. With a wide measurement range and NIST-traceable wavelengths, Fiber OWL 7 series certifiers are ideal for both singlemode and multimode fiber link certification. Enclosed in an attractive hand-held case made from high impact plastic and protected by a protective rubber boot, test readings and graphical help screens can be viewed on the color LCD, and an intuitive 10-key keypad allows for easy data entry. Each Fiber OWL 7 fiber link certification power meter is powered by a re-chargeable lithium polymer battery, which typically allows up to 50 hours of continuous use. Abuilt-in auto-shutdown feature further conserves battery life. The battery is re-charged through the USB port via a supplied battery charger.