High performance, omni-directional pre-amplified microphone for use in covert applications 25’ pickup pattern in all directions. Built in limiter circuit automatically lowers the output level during loud sound intervals. Selectable lo-cut and hi-cut filters significantly reduce background noise. 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 3' microphone cord Low noise MOSFET pre-amplifier.
• 500Hz-13Khz Frequency response.
• Jumper selectable hi-cut/lo-cut filters limit frequency response to up to 900 to 6Khz significantly reducing background noise.
• Jumper selectable volume range: "Line level" (0db) or "Microphone level" (-30db) Adjustable gain in both volume ranges. Internal peak limiter circuit (.5 sec response) 100 Ohm, unbalanced output.
• 3 position terminal block.
• Power: 12 to 24VDC @ 10mA.
• On-board voltage regulator and RFI filtering.
• Temperature range: -40C to 85C.
• S/N ratio: more than 60DB
• Sensitivity –45DB
• Black ABS pre-amplifier enclosure mounts on any flat surface.
• Dimensions Microphone: D 0.33 L x 1.32
• Dimensions pre-amplifier: L 2.7 x W 1.7 x H 1.5
• Weight .08lbs

Includes:

• SM1-PA preamplifier
• ML1-C with 3 ft microphone cord
• Warning label
• Installation instructions

Options:

• See Pre-amplifier selection guide for alternate pre-amplifier form factors. Add –LN to P/N for ultra low noise (80db) and high sensitivity (–28db) microphone capsule 

Wiring requirements:

• 2 conductor shielded (with drain wire) 22 gauge stranded. Max cable length 1000’.