Surveillance Optical Microphone

Miniature fiber optic microphone for indoor acoustic monitoring applications where the footprint for microphone placement is severely limited or where the microphone is a sub-component in another device or system.

The SOM(3) system comprises of an advanced fiber optic microphone & single-channel electro-optic unit (EOU100), for digital-to-analog conversion of optical microphone output signals. The Single Channel EOU 100 is extremely compact. It features a pair of ST- style fiber optic connectors; a 3.5 mm socket for analog output & green LED voltage indicator. Unit is powered by external DC power supply.

The SOM(3) is supplied as standard with clear 1mm PVC fiber-optic cable. Where there is no benefit in the thin, transparent 1mm PVC cable, we recommend the more robust Kevlar reinforced black 3mm PVC cable.

The SOM(3) also has option of front or side extension tube. Extension tube versions for concealment and better installation through walls and objects. The only effect is that it slightly decrease bandwidth to be around voice frequencies.

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