The effect of resist echo is very well, Suit for the echo big room, filter the noise, the conference room, big hall etc

Parameter:

Monitoring Range                10-60m²transmitting distance(shield cable)   3kmFrequency Response               20Hz ~ 20kHzSensitivity                         -45dBSNR                               80dB(1m 40dB sound source)

                               30dB(10m 40dB sound source)1KHz at 1PaPolar Pattern                     Omni-directional   Dynamic Range                   60dB(1KHz at Max dB SPL)Maximum Level Input             120dB SPL (1KHz,THD 1%)Impedance                        600ohm (imbalance)Signal Output Extent               2.5Vpp/-25dbMicrophone                      2 complementary type capacitance mic head

Signal processing                  ClearSpeech Digital Noise Reduction

Protect Circuit                                  Over-loading protection, Lightning proof Audio Preamp                                  Build-in Output Connector                            Power+, Audio and Public GND    

Cable                                                3 x 0.5mm ² RVVP cable Power Voltage                                  DC 12V (8 ~ 18V)        Power Current                                   17 mATemperature                                    -35°C ~ 70°C

Color                                                 whiteShell's Material                                  PVC

Dimension                                        200mm×80mm×30mm

Weight                                              215gStandard                                          CE, FCC

M.TRADIO resist echo audio surveillance mic