The SM1-HS is a dome shaped, pre-amplified, panel mount, omnidirectional, weather proof (IP55), vandal resistant, microphone for indoor / outdoor applications. Built in limiter circuit automatically 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.
• Tamper resistant microphone Weather proof microphone (IP55) 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) o "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
• ML1-HS Dimensions: L 1.25 x D 0.6
• SM1-PA Dimensions: L 3.3 x W 2.0 x H 1.6
• Weight .1lbs

Includes:

• ML1-HS Microphone.
• Gasket, washer and nut SM1-PA Pre-Amplifier.
• 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’