ETS SM1-C Specsheet

Sound Surveillance tm

Description

Highest performance, Omni-directional,
pre-amplified microphone for fixed
location security applications. New
features include:

• Adjustable high and low frequency

cut off filters. Useful for reducing
background noise.

• Adjustable automatic level control

with a compression ratio range of 1:1
to 10:1. The circuit automatically
lowers the gain in loud environments
and when quiet, raises the gain
where faint audio sources such as
people whispering can then be
heard.

• Universal Power input: Accepts

12-60Vdc or 9-42VAC

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-P flush mount microphone.

• Mounting screws.

• 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.

SM1-P Universal

Omni-directional

Pre-amplified

Microphone

SM1-P Specifications

• Omni-directional 25' pickup pattern

• Low noise MOSFET pre-amplifier.

• 200Hz-16Khz Frequency response (hi-

cut and lo-cut off)

• Adjustable lo-cut filter: (200hz to 1Khz)

• Adjustable hi-cut filter: (5Khz-16Kz)

• Adjustable automatic gain control.

(compression range 1:1-10:1).

• Adjustable output level (post AGC).

• Line level unbalanced output.

• Treble boost pre-emphasis.

• 3 position Euro-style connector makes

cable termination fast and clean.

• Power: 12-60VDC or 9-42VAC
@15mA.

• On-board voltage regulators and RFI
filtering.

• Flexible plastic plate mounts flush or on
a single gang electrical box.

• Dimensions: L 4.7” x W 2.9” H 0.9”

• Available in all standard housings and

as a Unidirectional.