3M PELTOR SCU-300 User Manual (English)

Questions and Answers:

S
Stephanie CrawfordAug 5, 2025
What to do if my 3M PELTOR SCU-300 Control Unit SCU-300 will not send or receive radio communications?
- J
  Jennifer LewisAug 5, 2025
  If your 3M Control Unit SCU-300 isn't sending or receiving radio communications, first, check the cable connection to both the radio and the SCU. You should hear a voice message indicating 'Radio connected'. Also, ensure that the SCU-300 is powered on, the radio volume is at an audible level, and the radio itself is turned on. Finally, verify that you are transmitting on the correct frequency.
C
campbellcynthiaAug 13, 2025
What to do if my 3M PELTOR SCU-300 SCU-300 will not send and/or receive intercom communications?
- A
  Ariel MooreAug 13, 2025
  If your 3M Control Unit SCU-300 will not send or receive intercom communications, ensure that the SCU-300 has fully charged batteries. Check the volume and make sure the intercom is powered on and properly connected; a voice message should indicate 'Intercom connected'. Also, ensure the SCU-300 is in HOT MIC mode, or that you are pressing the specified SCU PTT button and the intercom PTT button if needed.
S
Steven StewartAug 21, 2025
Why I cannot control the system with the 3M PELTOR SCU-300 RCU-300?
- K
  Katelyn SmithAug 21, 2025
  If you cannot control the system with the RCU-300, make sure the SCU-300 has fully charged batteries. Also, ensure that you are using the correct RCU-300 and that it is not too far away from the SCU-300.
K
kayla60Aug 27, 2025
How to fix a 3M PELTOR SCU-300 Control Unit SCU-300 that will not power on?
- C
  coryhortonAug 27, 2025
  If the 3M Control Unit SCU-300 will not power on, make sure the batteries are inserted correctly and that there are fully charged batteries in the SCU-300.

3M PELTOR SCU-300 Specifications

General

Brand	3M
Model	PELTOR SCU-300
Category	Control Unit
Language	English

Summary

Introduction and Safety

1.1. Intended Use

Describes the SCU-300's function to connect and control components of the 3M PELTOR Tactical Modular Audio System.

2.1. Important Safety Information

Provides crucial safety information to read, understand, and follow before using the product.

2.2. Cautions for Use

Details cautions regarding specific 3M replacement parts, battery types, and handling of Lithium ion batteries.

FCC and IC Information

Overview

Product Setup

5. Explanation of Symbols

Explains the meaning of symbols used on the product, including recycling and certification marks.

6.1. Inserting Batteries in SCU-300

Step-by-step guide on how to insert two AAA batteries into the SCU-300 battery compartment.

6.2. Powering On the SCU-300

Instructions on how to power on the SCU-300, including initial connection behavior with other devices.

6.3. Initial SCU Power On and Connection

Details the initial process for powering on the SCU and connecting it wirelessly to TEP-300 or ComTac™™ VII using NFMI.

6.4. Powering On the RCU-300

Instructions on how to power on the RCU-300 by pressing the '+' button.

6.5.1. Powering Off the SCU-300

Procedure to power off the SCU-300 by pressing and holding the On/Off/Menu button.

6.5.2. Powering Off the RCU-300

Procedure to power off the RCU-300 by pressing and holding both '+' and '-' buttons simultaneously.

6.6. Pairing RCU-300 to SCU-300

Guide on pairing the RCU-300 to the SCU-300 using Bluetooth® Low Energy, requiring the TEP-300 or ComTac™™ VII headset.

6.7. Fitting the SCU-300

Instructions on how to attach the SCU-300 to a protective vest using its metal clip.

6.8. Fitting the RCU-300

Guide on mounting the RCU-300 onto a rail system, ensuring correct orientation and proximity.

6.9. Connecting to an External Radio

Steps to connect the SCU-300 to an external radio, including cable alignment and socket selection.

6.10. Connecting an External Intercom

Procedure to connect the SCU-300 to an external intercom system, ensuring correct markings and socket.

6.11. Connecting ComTac™ VII with Cable

Instructions for wired connection of the ComTac™ VII headset to the SCU-300, aligning markings and socket.

Instructions for Operation

7.1. Operating Temperature

Specifies the operational temperature range for the device and provides advice for extreme cold conditions.

7.2. Adjusting Ambient Volume

Explains how to adjust ambient listening volume using the SCU-300 or RCU-300 '+' and '-' buttons.

7.3. Adjusting Radio/Intercom Volume

Details how to adjust radio/intercom volume by pressing the '+' and '-' buttons simultaneously on the SCU-300 or RCU-300.

7.4. Adjusting Radio Volume on Radio

Directs users to external technical documentation for adjusting radio volume directly on the radio.

7.5.1. Making or Answering Phone Calls via Bluetooth

Describes how to answer, hang up, or reject calls using the SCU-300 Function button or RCU-300 PTT II button.

7.5.2. Transferring Function Button to RCU-300

Explains how to transfer the SCU-300's Function button capability to the RCU-300's PTT II button.

7.6. Navigating the SCU-300 Menu System

Details how to navigate the SCU-300 menu system using the On/Off/Menu, '+' and '-' buttons.

SCU-300 Menu Functions

8.1. Radio Volume

Adjusts the volume for connected external communication devices and intercom systems across five preset levels.

8.2. Ambient Listening Volume

Adjusts the ambient listening volume on connected headsets, offering preset volume levels.

8.3. Primary Microphone

Allows selection of the primary speech communication microphone, applicable when TEP-300 and ComTac™™ VII are connected.

8.4. Advanced Settings

Contains advanced configuration options for the SCU-300, including battery status, radio silence, and pairing.

8.4.1. Battery Status

Performs a battery status check on the SCU-300, RCU, TEP-300, and ComTac™™ VII.

8.4.2. Radio Silence

Silences NIB, NFMI, and Bluetooth signals emitted from the TMAS, with potential device-specific limitations.

8.4.3. Voice Guide Volume

Sets the volume for automatic audio messages, allowing adjustment for surrounding noise levels.

8.4.4. NFMI Pairing

Facilitates pairing of products to the SCU-300 using the Near Field Magnetic Induction (NFMI) technology.

8.4.5. Training Mode

Enables a test mode to evaluate the optimal placement of the SCU-300 for various situations.

8.4.6. SCU Placement

Allows selection of the SCU-300 placement, with options for chest (recommended) or waist position.

8.4.7. Auto Power Off

Configures the SCU-300 to automatically turn off after 2 hours of inactivity, unless connected to TEP-300 or ComTac™™ VII.

8.4.8. Warning Signals

Enables or disables audio messages and warning signals heard in the headset.

8.4.9. RCU Primary Pairing

Initiates the pairing process for the primary RCU-300 with the SCU-300.

8.4.10. RCU Secondary Pairing

Allows pairing of a secondary RCU-300, only available if a primary RCU-300 is already connected.

8.4.11. Bluetooth® Pairing

Pairs a selected Bluetooth® unit with the SCU-300 for wireless connectivity.

8.4.12. Bluetooth® Function Button

Transfers the SCU-300's Function button capability to the RCU-300's PTT II button.

8.4.13. Primary Microphone

Selects the primary speech microphone for TEP-300 or ComTac™™ VII if they are not paired.

8.4.14. Battery Type

Sets the battery type (Alkaline or Rechargeable) for accurate battery life estimations.

8.4.15. Radio Audio

Selects one of three sound profiles for how radio audio is heard in the headset, affecting left/right ear balance.

8.4.16. System Power Off

Turns off all products connected to the Tactical Modular Audio System simultaneously.

8.4.17. Factory Reset

Resets the SCU-300 to its original factory settings, restoring default configurations.

Troubleshooting

Storage and Disposal

10.1. Storage Guidelines

Details how to properly store the product, including cleaning, environmental conditions, and battery removal for long-term storage.

10.2. Disposal Instructions

Outlines national regulations and local directives for the proper disposal of electronic waste and batteries.

10.2.1. Battery Disposal

Provides guidance on proper battery recycling and disposal according to local regulations.

Maintenance

11.1. Cleaning the Product

Instructions on how to clean the product, emphasizing keeping the battery cap and sockets free from dirt.

Accessories

Warranty and Liability

13.1. Warranty Terms

Outlines 3M's warranty obligations, remedies, and exclusions for product defects.

13.2. Limitation of Liability

Defines the limits of 3M's liability for any direct, indirect, or consequential damages arising from product use.

13.3. No Modification Policy

States that unauthorized modifications to the device are prohibited and may void the warranty.

Related product manuals

3M PELTOR SCU-300 User Manual

Table of Contents