ST800 Optical Power Meter: Accurately test optical power in the wavelength range of 800~1660n m. It can be widely operated for test of LAN, WAN, CATV, remote optical network, etc. Cooperate with laser source, it can distinguish fiber, test fiber loss and connection, help to evaluate fiber transmission performance. Features: 1. Multi-wavelength precise measurement 2. Applicable to versatile adapters (FC, ST, SC) 3. Absolute power measurement dBm or uW 4. Relative power measurement dB 5. Low voltage warning, automatic power off and energy-save design 6. Memory capacity of 50 data items 7. Large LCD display, backlight display 8. Small size, simple operation Like all SENTER portable instruments, the ST800 is built for top ruggedness and versatility, perfect for the harshest test conditions. The ST800 Optical Power Meter is the ideal tool for optical network operation and maintenance.