Sigtronics MRIM-2 Installation And Operating Instructions Download Page 1

INTRODUCTION

Attention Installer: To assure a trouble free installation, please read 
these entire instructions through once before beginning.

The Sigtronics Mobile Radio Interface Module is a small unit that allows 
emergency personnel to operate the vehicle’s mobile radio using a 
headset. When used with a Sigtronics noise attenuating headset (ie. 
models SE-8 or SE-48) this unit provides personnel with clear radio 
communications in high noise environments. The system allows full 
radio monitoring as well as radio transmit capability from the headset 
via a Push-To-Talk (PTT) switch.
Applications: The unit is designed for fire apparatus, rescue and 
ambulance vehicles, marine emergency equipment, airport ground 
vehicles, and mobile emergency command centers. Used in applications 
where intercom is either not desired or not necessary.
Headphone Output: The Mobile Radio Interface Module is designed 
to be used with noise attenuating, full cushion headsets, such as the 
Sigtronics SE-8, or SE-48. The Mobile Radio Interface Module incorporates 
an automatic headphone limiting circuit to eliminate the possibility of 
painful spurious radio or noise spikes from getting to the headset and 
to your ears.

Universal Radio Interface is designed to accommodate virtually any type 
of communication radio. Adjustments for radio transmit microphone 
level are provided to perfectly match the Mobile Radio Interface Module 
to your particular radio.

Excellent RF Immunity guarantees clean, clear, radio communications.

Standardized for use with Sigtronics single plug headsets (ie. SE-8, 
SE-18, or SE-48).

STANDARD EQUIPMENT INCLUDED

Besides the unit, each Mobile Radio Interface Module comes complete 
with the following:

  Module Mounting Screws .................................................................. 4

  Module Mounting Nuts ....................................................................... 4

   Headset Jack Box and Cover with Pre-mounted  

Headset Jack & Splash Cover ............................................................. 1

  with Pre-mounted PTT Switch .......................................................... 1

  Jack Box Cover Screws ......................................................................... 4

  Jack Box Mounting Screws ................................................................. 4

  Wire Grommet ........................................................................................ 2

  Jack Insulator Washer, Flat .................................................................. 1

  Jack Insulator Washer, Shoulder ....................................................... 1

  4 ft Interface Cable ................................................................................ 1

  4 conductor hook-up wire ..........................................................1 Roll

igtronics 

®

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Sigtronics Mobile Radio Interface Module

INSTALLATION AND OPERATING INSTRUCTIONS 

Models MRIM-2

Specialists in “SOUND” Management

178 East Arrow Highway, San Dimas, CA  91773   (909) 305-9399

Made in the U.S.A.

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