The SM1-PH is a pre-amplified, pin hole style, omni-directional, microphone. Internal Limiter circuit lowers the output level during loud sound intervals 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.
• Switch selectable hi-cut/low-cut filters limit  frequency response to 900 6khz significantly reducing background noise.
• Switch selectable 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 terminal block
• PTCC fused and reverse polarity protected Power: 12 to 24VDC @ 10mA.
• On-board voltage regulator and RFI filtering.
• S/N ratio: more than 60DB
• Sensitivity –45DB
• 6ft standard length cord w/3.5mm connector
• Temperature range –40 to 85C
• Anodized Black Aluminum parts
• ML1-PH Dimensions: L 1.30 x D1 0.6 x D2 0.4
• ML1-PH Disc Dia. 2.00 x H 0.10
• SM1-PA Dimensions: L 3.3 x W 2.0 x H 1.6
• Weight  .1lbs

Includes:

• ML1-PH Microphone.
• Mounting Disc Bracket
• SM1-PA Pre-Amplifier.
• Warning label.
• Installation instructions.