b'Clockaudio -Boundary Cardioid Microphones 15ARM 202-RFmotorisedthrough-table boundary cardioid condenser microphoneThe ARM 202-RF is a boundary layer through table cardioid condenser microphone, with a built-in motorised mechanism that will allow the user to make the microphone disappear without having to physically touch it or remove it from the table. A positive (+2.5V to +12V) signal applied to the DSP control port will simultaneously activate all ARM motorised microphones connected to the ARM-C (control unit for ARM microphones).Easy to installLow profile at surface levelRobust brass constructionCardioid polar patternBuilt-in RF filterBalanced outputSupplied with 2m (6.6ft) 2 core + screen cableSatin Nickel or Black Nextel finishModels:ARM 202-RFBlackARM 202N-RF NickelAccessoriesModel:ARM 202-RFARM-CTypeCondenser (Back Electret)Polar PatternHalf CardioidDigital four channel motor Control Box for use with the ARM Frequency Response50Hz - 18KHz series of motorised through desk Sensitivity-37dB +/- 3dB @ 1KHz (0dB = 1v/Pa) Boundary microphones.Impedance200WS/N Ratio69dB(A) ARM-PSU 4Maximum SPL125db at 1KHz 1% T.H.D.ARM-C Switched mode power supply Power Requirements9 ~ 48v Phantom Power capable of delivering regulated TerminationOpen ended 12vDC @ 5 Amps. DimensionsAbove Table: 18mm (0.70) Diameter:63mm (2.48) see page 28Below Table: 199mm (7.83) Diameter:58mm (2.25)= RF-Immunity Version'