E.TRADIO High-Fidelity,clear speech audio surveillance microphone

Clear Speech Microphone,Omni Directional, 50sq.m,suit for classroom,meeting room,public security organs, procuratorial organs...

E.TRADIO: Clear Speech Microphone,Omni Directional, Monitor Range 10-50sq.m,Size 90mm*35mm, Weight 50g, White/Blue Case.Part of  customers:  Public Security Bureau of Beijing ;Proceracy of Guangzhou;Classroom of Beijing University;Tongji Hospital etc

Parameter: Monitoring Range                          10 ~ 50sq.mtransmiting distance(shield cable)   3kmFrequency Response                     20Hz ~ 20kHzSensitivity                                     -35dBSNR                                            75dB(1m/40dB)  

                                                   30dB(10m/40dB)1KHz at 1 PaPolar Pattern                                Omni-directional   Dynamic Range                            104dB(1KHz at Max dB SPL)Maximum Level Input                     120dB SPL (1KHz,THD 1%)Impedance                                    600ohm (imbalance)Signal Output Extent                     2.5Vpp/-25dbMicrophone                                  Electret condenserSpecial Circuit                              DSP de-noise, AGC circuitProtect Circuit                              Over-loading protection, Lightning proofAudio Preamp                              Build-in

Output connector                          Power+, Audio and Public GND    

Cable                                           3 x 0.5mm2 RVVP cableVoltage                                        DC 12V (8 ~ 20V)        Current                                        20 mATemperature                                 -25°C ~ 70°CColor                                            Blue/WhiteShell's Material                            PVCSize                                            90mm × 35mmWeight                                        66g

          

Detail Introduction: *Low noise, Low echo, clear speech, medium price.*blue/white coat microphone,widely voice-picking region.*Dynamic de-noise disposal, built in DSP processor.*Special closed circle circuit design, eliminating electronic noise.*FLAYER diffusion coat, excellent picking voice.*Volumn adjusting automatically (AGC), monitoring range reach 50 sq.m.*Echo-concelling appearance design, eliminating echo in big hall.*0.8mm pinhole design, clear picking voice.*Restraining high intensity voice automatically, protecting rear devices.*Long-distance transmission, the maximum transmiting distance can reach 3km. *Cable is required: 3 x 0.5mm2 RVVP cable, 4 core phone line, network twist line, etc.*Built-in over-loading protection and lightning proof circuit.*Pre-amplifier, directly drive DVR, VCR, headphone, loudspeaker etc.*Excellent voice experience, widely working temperature: -25~75°C*Widely used in: Police, Jail, Classroom, Army's department.*According with CE standard.

E.TRADIO High-Fidelity,clear speech audio surveillance microphone