A.TRADIO Counter directional Audio Surveillance Microphone

Counter Directional Microphone Directional,monitor distance:2m. It mainly for the among the counter of vitreous partition.

Counter Directional Microphone

Specially designed for the among the counter of vitreous partition,the smiling face

Size 30mm*30mm,Weight 27g,Yellow Case

Part of  customers: Bank of Beijing ;China Construction Bank;Hua Tang Commercial Centre;

Canada Embassy in China etc.

Parameter:

Monitoring Distance                          2mtransmiting distance(shield cable)      3kmFrequency Response                       20Hz ~ 20kHzSensitivity                                       -52dBSNR                                               80dB(1m/40dB)  

                                                      50dB(10m/40dB)1KHz at 1 PaPolar Pattern                                   directional   Dynamic Range                               70dB(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                                 ASIC

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

Cable                                              3 x 0.5mm2 RVVP cable

                                                      4 cores line,network's twisted pairs,shield cable Power Voltage                                 DC 12V (8 ~ 20V)        Power Current                                   20 mATemperature                                    -25°C ~ 70°CColor                                              YellowShell's Material                                Anti-fire material

Dimension                                       30mm×30mm

Weight                                            27gStandard                                         CE

Detail introduce:

*Professional wired voice monitor

*Specially designed for supermarket and bank counter.*Clear and natural voice.*Professional Unidirectional microphone, clear speech during 2m.*Strong directional design avoids disturbing from other counters.*Picking voice from bi-directional coverage.*Rubber glue at rear of microphone, convenient for installation.*Advanced echo-canceling technology, successfully eliminating echo interfere. *Beautifull appearance, suitable for bank and supermarket.*Restraining high intensity voice automatically, protecting back-end devices.*Long-distance transmission, cable's maximum length can reach 3km.*Cable: 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*According with CE standard.

A.TRADIO Counter directional Audio Surveillance Microphone