Pinhole Style Microphone,Omni Directional, Monitor Range 10-30sq.m,suit for prison,jail room,small room,very secretly
Pinhole Style Microphone,Omni Directional, Monitor Range 10-30sq.m,Size 60mm*22mm, Weight 30g, White / Black Case
Part of customers: Guizhou Provice prison; Dalian city jail rooms etc
Detail Introduction:
*Professional wired audio surveillance & monitoring microphone.*Low noise, Low echo, clear speech, low price.*Built in digital audio disposal circuit , two step dynamic de-noise disposal.*Special closed circle circuit design, eliminating electronic noise.*High sensitivity, low noise.*Restraining high intensity voice automatically, protecting rear devices
*Echo-concelling appearance design, eliminating echo in big hall.*0.8mm pinhole design, clear picking voice.*Pinhole style, little volume, suitable for jail room and other small room.
*Long-distance transmission, the maximum transmiting distance can reach 3km. shield *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*According with CE standard.
Parameter:
Monitoring Range 10~35sq.mtransmiting distance(shield cable) 3kmFrequency Response 20Hz ~ 20kHzSensitivity -47dBSNR 50dB(1m/40dB)
30dB(10m/40dB)1KHz at 1 PaPolar Pattern Omni-directional Dynamic Range 80dB(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 digital de-noise
Protect Circuit Over-loading protection, Lightning proofAudio Preamp Build-inOutput Connector Power+, Audio and GND
Cable 3 x 0.5mm2 RVVP cableVoltage DC 12V (8 ~ 20V) Current 17 mATemperature -25°C ~ 70°CColor WhiteShell's Material PVCSize 60mm × 22mm
Weight 30gStandard CE
I.TRADIO hidden,mini,built-in wall Audio Surveillance Microphone
