Data Sheet

SM1-ULE Uni-directional
Pre-amplified Microphone
Electronic Technical Services Inc.
211 Conchas SE
Albuquerque, NM 87123
PH 505-888-3923 FAX [phone]
Website: www.etsnm.com
Description
High performance, Flush mount,
Uni-directional, pre-amplified microphone
for use where side noise must be
reduced. Simply mount the SM1-ULE in
the direction of interest. Built in limiter
circuit automatically lowers the output
level during loud sound intervals.
Selectable lo-cut and hi-cut filters
significantly reduce background noise.
ABS enclosure mounts on any surface
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.
Includes:
 SM1-ULE Surface mount microphone.
 Warning label.
 Installation instructions.
Wiring requirements:
2 conductor shielded (with drain wire) 22
gauge stranded. Max cable length 1500’.
Caution
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
attorney.
Warranty
1 year parts and labor. Made in USA
SM1-ULE Specifications
 Uni-directional 25' pickup pattern with reduced
(-6db) sensitivity on all sides.
 Low noise MOSFET pre-amplifiers.
 S/N ratio: more than 60DB
 Sensitivity –45DB
 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 Euro-style connector makes cable
termination fast and clean.
 Power: 12o to 24VDC @ 10mA.
 On-board voltage regulator and RFI filtering.
 Industrial temperature range: -40C to 105C
 Similar in appearance to a fire suppression
sprinkler head.
 ABS enclosure mounts on any surface.
 Dimensions: L 5.1” W 2.7” H 2.3”
 Weight 0.1lbs
Sound Surveillance
tm