The most perfect testing function:
1. Three kinds of modulated signal generated: 270 HZ, 1KHZ , 2KHZ
2. Auto-Wavelength recognition, no need for communication between the sources and power meter. Save test time and decreases the potential error
3. Visual light (650 nm) fault locator ( optional)

The most perfect power supply and power management:
1. Internal rechargeable Li battery, AA battery and AC adapter.
2. Auto power-off.
3. More than 100hr battery life.

The most perfect testing ensurance:
1. Superior source stability to ensure the testing performance and repeatability.
2. Wide LCD display that provides the most completes testing information: wavelength, modulated signal, all kinds of conditions.
3. High quality and rugged design, ideal for field-testing.