| 摘要 |
The present invention provides a communication system for covertly monitoring a target area. The communication system comprises a retractable communication unit suitable for in ground installation at a first site, said retractable communication unit comprising: a telescoping support; a communication device mounted on a distal portion of said telescoping support; and a housing comprising a sleeve having a lid on a distal portion of the sleeve, said lid movable between an closed position and an open position, said housing enclosing said telescoping support and said communication device when said telescoping support is in a retracted position. The present invention further provides methods of installing said communication system and methods for using the communication system for covertly monitoring a target area.
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