Indoor GPS System for a building, Bus Parks. : Coverage Distance: the whole building ; Covering Floors: the top floor to the underground garage, covering the entire building; Frequency Range: GPS L1 and Beidou2 B1 (Choosing other GPS antenna, to get more band signal repeater) ; GPS Splitters: Port has control and alarm functions ; Display information of GPS/Beidou2 B1 in time ; Power : 220V ; Operating Temperature: -40 to 85℃ ; Typical Applications: Testing of GPS Receiving Products; Indoor Coverage of GPS Signals.