TLD1306 series of digital variable optical attenuator is designed by our company according to the developing optical communication and the application of the project. The digital variable optical attenuator with the small volume, light weight, low power consumption, has the competitive price and capability. This handheld variable attenuator enables consistent operation in various testing situation, such as photoelectric device, optical passive component, optical fiber, optical cable, optical fiber communication, as well as the construction and maintenance of the fiber communication engineering. Main Functions ¨ 0.1dB weaken resolution ¨ Three kind of attenuation step elected 10dB, 1.0dB, 01dB. ¨ Universal interface has three types of adapter: FC / SC / ST. Easy to operate ¨ Small size/ light weight/ high reliability. Flexibly switch the wavelength ¨ Battery-powered, convenient field work. Omnipotence joint ¨ Backlight at night. Applications ¨ Fiber production and research devices ¨ Fiber Network Testing and Maintenance ¨ Optical Communication Teaching and Test