Manual
 PLEASE READ ALL WARNINGS, CAUTIONS AND NOTES 
CARFULLY 
CAUTION: Before proceeding to test or use your new ACR 
Electronics’  product,  please  read  this  Product  Support 
Manual in its entirety. 
WARNING: The PLB must be promptly registered with the 
appropriate  National  Authority. Failure  to  register  the  PLB 
could delay a Search  and Rescue (SAR) response  and  may 
be unlawful. 
WARNING:  This  transmitter  is  authorized  for  use  only 
during situations of grave and  imminent danger. Deliberate 
misuse may incur a severe penalty. 
CAUTION: False alerts endanger lives and cause expensive 
disruption to Search and Rescue services, deliberate misuse 
of the PLB could result in penalty and fine. 
CAUTION:  Contains  lithium  batteries. Do  not  incinerate, 
puncture, deform, short-circuit or recharge. 
CAUTION:  Do  not  dismantle  the  PLB,  contains  no  user-
serviceable parts. 
CAUTION: Remove from pouch prior to operation 
Disposal: Remove the Lithium battery. Dispose of the used 
battery in accordance with local waste disposal regulations. 
Air  Travel:  Product  contains  small  lithium  metal  batteries 
that  comply  with  IATA  SP  188-PI  970  Air  Cargo. Always 
check  with  air  carrier  concerns  for  any  additional 
restrictions. 
This manual supports all configurations of PLB-375 beacons. In addition 
to  the  part  numbers  listed  on  the  cover  page,  other  configurations  of 
these products may be  available,  thus you may have purchased a 
product  configuration  with  a  different  version  of  the  part  number  (for 
example, 2880.63). As long as the first four digits are the same as one 
of the part numbers on the cover, this manual is applicable. If you have 
questions  regarding  the  contents of  the  manual or  something  not 
covered  in  the  manual,  please  contact  our  Technical  Service 
Department at ACR Electronics Inc. +1 (954)-862-2110.  
Table of Contents   
1.  Registration    3 
2.  Anatomy Of A Rescue  6 
3.  Anatomy Of Your Beacon  7 
4.  Activating Your Beacon  8 
5.  Turning Your Beacon Off  11 
6.  Testing Your Beacon  12 
7. Satellite Testing    14 
8.  Preventing False Alarms  15 
9.  Beacon Maintenance  16 
10. Product Specifications  18 
11. Product Warranty  19 
2 
Table Of Contents & Warnings 










