ETS SM1-RJ Surface Mount Omni-Directional Covert Microphone

High performance, Omni-directional, pre-amplified microphone for fixed location security applications. Dual RJ wall plate features one working telephone jack and a microphone in the other. 25' pickup pattern in all directions. Built in limiter circuit automatically lowers the output level during loud sound intervals. Select-able lo-cut and hi-cut filters significantly reduce background noise.

Product Features

• Omni-directional 25' pickup pattern.
• One functioning RJ jack
• Low noise MOSFET pre-amplifier.
• 500Hz-13Khz Frequency response.
• Jumper select-able hi-cut/low-cut filters limit frequency response to 900-6khz significantly reducing background noise.
• Jumper select-able volume range: "Line level" (0db) or "Microphone level" (-30db)
• Adjustable gain in both volume ranges.
• 100 Ohm unbalanced output.
• Internal peak limiter circuit (.5 sec response)
• 3 position Euro-style connector makes cable termination fast and clean.
• Reverse polarity protected
• Power: 12 to 24VDC @ 10mA.
• On-board voltage regulator and RFI filtering.
• S/N ratio: more than 60DB
• Sensitivity --45DB
• Industrial temperature range --40 to 105C.
• Dimensions: L 4.5" W 2.7" H 1.8"