SM1-SS-KMS Omni-directional Pre-amplified Microphone With Mute

Electronic Technical Services Inc.
211 Conchas SE
Albuquerque, NM 87123
PH 505-888-3923 FAX 505-888-3926
Sound Surveillance tm
SM1-SS-KMS Omni-directional Pre-amplified
Microphone With Mute Key Switch
High performance, Omni-directional,
pre-amplified microphone for fixed
location security applications. 25’ pickup
pattern in all directions. Built in limiter
circuit automatically lowers the output
level during loud sound intervals. Hi cut
and low cut filters significantly reduce
background noise. Built in mute key
switch (turns audio output off) with LED
indicator. LED lights red when muted and
Green when not. Stainless steel plate
mounts flush or on a single gang
electrical box.
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.
SM1-SS-KMS flush mount
2 keys
Mounting screws.
Warning label.
Installation instructions.
Wiring requirements:
2 conductor shielded (with drain wire) 22
gauge stranded. Max cable length 1500’
It is the responsibility of the installation
company and end user to install this audio
surveillance equipment in compliance with
state and federal privacy laws. If you are
unfamiliar with these laws, consult a qualified
1 year parts and labor.
Made in USA
SM1-SS-KMS Specifications
Omni-directional 25’ pickup pattern.
Low noise MOSFET pre-amplifier.
500Hz-13Khz Frequency response.
Jumper selectable hi-cut/low-cut filters limit
frequency response to 900-6khz significantly
reducing background noise.
Jumper 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 Euro-style connector makes cable
termination fast and clean.
Reverse polarity protected
Power: 12 to 24VDC @ 20mA.
On-board voltage regulator and RFI filtering.
S/N ratio: more than 60DB
Sensitivity –45DB
Industrial temperature range –40 to 105C.
Mute key switch (includes 2 keys)
Two color LED mute status indicator
Stainless steel plate mounts flush or on a
single gang electrical box.
Dimensions: L 4.5” W 2.7” H 1.1”
Weight .07lbs
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