The NSAI series of our NanoSpeedTM fiber optic attenuators uniquely features large 35dB attenuation, low optical loss, fast response, and high optical power handling. This is achieved by cascading several devices on a PCB board with a single electrical control input and housing inside a metal casing. Our NS fiber-optic devices meet the most demanding reliability requirements for undersea, space, and continuous switching with a longevity of over 25 years. The switch is bidirectional. The NS Series devices are connected to pre-tuned electronic drivers. The control signal is 0-5V via an SMA port, and the power is 12V DC (a wall pluggable is accompanied inside the shipping box).