F.Tradio audio surveillance & audio monitoring microphone, water proof, 8sq.m monitoring range, can connect directly to DVR, VCR, active loudspeaker, headphone, soundcard of PC and anywhere CCTV installed, the maximum wire transmit distance can reach 3 Km(shield cable is required), it only need 12V DC power supply, special for outdoor use, such as alarm station...Most of Tradio audio surveillance & audio monitoring microphones are widely used in banks, prisons, interrogation rooms, museum, auction hall, airport hall, ICU of hospital, classroom, warehouse, hotel, big stadium etc. During 2008, our products serve Beijing Olympic Games. Such as Water cube, we are respected by users around the world for an excellent sound experience with low echo & noise.

Introduction:

1.Excellent voice expearance, water proof, unidirectional.
2.Low noise,low echo and clear speech, 8sq.m monitoring range.

3.Built-in de-noising circuit and speech DSP chip, even more natural voice.
4.Special closed circle circuit design, eliminating electronic noise.
5.Patent appearance design,stainless steel with aluminium alloy seat
6.Restraining high intensity voice automatically, protecting rear devices.
7.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.
8.Built-in over-loading protection and lightning proof circuit.
9.Pre-amplifier, directly drive DVR, VCR, headphone, loudspeaker etc.
10.Excellent voice experience, widely working temperature: -25~75°C
11.Water proof anti-riot, can be used in outdoor, such as alarm station...

12.According with CE standard.

Parameter:

Monitoring Range  8sq.m
transmiting distance(shield cable)  3km
Frequency Response  20Hz ~ 20kHz
Sensitivity     -45dB
SNR        50dB(1m/40dB)   30dB(10m/40dB)1KHz at 1 Pa
Polar Pattern     unidirectional  
Dynamic Range     80dB(1KHz at Max dB SPL)
Maximum Level Input    120dB SPL (1KHz,THD 1%)
Impedance     600ohm (imbalance)
Signal Output Extent     2.5Vpp/-25db
Microphone     Electret condenser
Special Circuit     DSP de-noise, AGC circuit

Protect Circuit     Over-loading protection, Lightning proof
Audio Preamp     Build-in
Cable             Power+, Audio and GND     3 x 0.5mm2 RVVP cable
Voltage             DC 12V (8 ~ 20V)       
Current             17 mA
Temperature     -25°C ~ 70°C
Color                Silvery

Shell's Material   Aluminum
Weight             170g
Standard          CE