As a tiled LCD solution the NSL-4601 is ideal for Emergency Operations Centers, traffic and surveillance centers, and utilities and process control rooms.

作为一款拼接产品， NSL-4601对于应急指挥中心、交通控制中心和过程控制等不同应用均是理想的选择。

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Barco's NSL-4601 video walls can be serviced from the front and the back. They require no back room space at all, so they are ideally suited for control rooms where space is limited.

巴可nsl - 4601液晶拼接墙从正面和背部均可进行维护和维修，完全可以不需要空余的背部空间，对于空间有限的控制室来说尤其适用。

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Recipients of a NSL are prohibited from notifying the person whose information is being requested.

FORBES: The Sheep Stop Here: Another Church Committee or Full Review of Privacy Laws Needed?

Reporting by the Wall Street Journal last summer narrowed the possible recipients of the NSL in question to a small cell phone firm called Credo Mobile.

FORBES: Here's The Judge's Order Banning The FBI's Secret Requests For Companies' User Data

The USA PATRIOT Act expanded the purpose of National Security Letters (NSL) to allow government agencies to use them to request any data relevant to an investigation of terrorism or an intelligence activity without court oversight.

FORBES: The Sheep Stop Here: Another Church Committee or Full Review of Privacy Laws Needed?