The NSSI series of NanoSpeedTM fiber optic switches uniquely feature high on-off extinction of 50dB, low optical loss, fast response, and high optical power handling. This is achieved using compensating electro-optical control technology that significantly reduces drift. It cascades several switches on a PCB board with a metal cover. The NS fiber-optic switch meets 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 switch is mounted on a pre-tuned electronic driving PCB. Control is a 5V TTL signal via an SMA port, and power is 12V DC (a wall pluggable is accompanied inside the shipping box).