Highest performance, Omni-directional, pre-amplified microphone for fixed location security applications. New features include:

• Adjustable high and low frequency cut off filters. Useful for reducing background noise.
• Adjustable automatic level control with a compression ratio range of 1:1 to 10:1. The circuit automatically lowers the gain in loud environments and when quiet, raises the gain where faint audio sources such as people whispering can then be heard.
• Universal Power input: Accepts 12-60Vdc or 9-42VAC

Connects directly to our switcher / mixer / amplifiers or use one of our many interface products to make fast and clean connections to DVRs or remote monitoring equipment.

Features:

• Omni-directional 25' pickup pattern
• Low noise MOSFET pre-amplifier.
• 500Hz-16Khz Frequency response (hi-cut and lo-cut off)
• Adjustable lo-cut filter: (500hz to 1Khz)
• Adjustable hi-cut filter: (5Khz to16Kz)
• Adjustable automatic gain control. (compression range 1:1-10:1).
• Switch selectable volume range:
  • "Line level" (0db) or
  • "Microphone level" (-30db)
• Adjustable output level (post AGC).
• 100 Ohm unbalanced output.
• Treble boost pre-emphasis.
• 3 position Euro-style connector makes cable termination fast and clean.
• Power: 12-60VDC or 9-42VAC @15mA.
• On-board voltage regulators and RFI filtering.
• Flexible plastic plate mounts flush or on a single gang electrical box.
• ITemperature range: -25 to 85C.
• Dimensions: L 4.7” x W 2.9” H 0.9”
• Weight .04lbs
• Available in all standard housings and as a Unidirectional.

Includes:

• SM1-P flush mount microphone.
• Mounting screws.
• Warning label.
• Installation instructions.

Wiring requirements:

2 conductor shielded (with drain wire) 22 gauge stranded. Max cable length 1500