The iServ DECT Repeater 4025 (RTX 4025) extends the range of your IP DECT phone easily. This is especially useful in remote areas in and outside (covered) of the office environment or, in spaces where “dead transmission spots” are prevelant. This state of the art, professional range extender boasts up to 3 repeaters per base station, wide band audio, DECT encryption and automatic registration. Maximum of 3 repeaters in a daisy chain. Coverage includes up to 50m indoors and 300m outdoors and is compliant with frequency bands: EU/AU/NZ, US/CA, LATAM and TW.