OTTO Building


You Can Depend on OTTO Performance and Reliability

OTTO two-way communications accessories set the standard for clear communications, reliable performance, and exceptional durability when it matters most. Built to exacting specifications to ensure flawless performance in a wide range of conditions, our products are the top choice of military forces, law enforcement agencies, public safety organizations, industrial, retail, and commercial customers worldwide.

Solutions & Services

  • Headsets
  • Speaker Microphones
  • Surveillance Kits
  • Wireless Intercom Systems
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OTTO Engineering designs and manufactures innovative two-way radio accessories developed for high-precision applications. OTTO specializes in tactical communication headsets, push-to-talk (PTT) systems and multi-port hubs, speaker microphones, cable assemblies for interfacing accessories to radios, tactical surveillance kits, and wireless intercoms for virtually all radio platforms. For 60 years, OTTO’s products have been recognized for excellence by military, law enforcement agencies, public safety agencies and retail and commercial customers worldwide.

OTTO is a vertically integrated manufacturer with in-house injection molding, stamping, CNC machining, cable assembly and cable overmolding capabilities. Our strong mechanical, electrical and RF Design Engineering capability, world-class test lab and computer-controlled production line testing is unmatched in the industry.

Located in Carpentersville, IL, U.S.A., OTTO’s products are proudly made in America.


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Proudly designed, engineered, and manufactured in the U.S.A., OTTO accessories are put to the test every day by people who depend on crystal clear communications to do their jobs. Whether you need heavy-duty to lightweight headsets, rugged to low-profile speaker microphones, surveillance kits or intercom systems, you can trust OTTO for all your two-way communications accessories needs.

Speaker Microphones

Superior performance day-in and day-out. OTTO’s Speaker Microphones are engineered to meet the communications demands of law enforcement officers, firefighters, industrial, manufacturing and mining users for critical, high-stress applications.

Speaker Microphone Earphone Kits

Lightweight, comfortable, and discreet, OTTO earphone kits plug into the earphone jack on a speaker mic to listen privately to incoming communications. Ideal for use in loud environments and high-risk situations to be able to hear communications clearly. Available with a 2.5mm or 3.5mm straight or right-angle connector to fit most speaker mics.


OTTO Headsets provide industry-leading sound quality, advanced hearing protection and the tactical performance features needed for superior two-way radio communications.

Over-the-Ear Headsets

Lightweight, ergonomically designed on-the-ear headsets provide outstanding communications clarity. The sleek headbands fit easily under a helmet, hard hat or cap for secure, all-day comfort.

In-the-Ear Headsets

OTTO’s super-lightweight, in-the-ear headsets deliver the best hearing protection for extremely loud environments where clear communications are essential. In-ear design easily adapts to provide either maximum hearing protection or complete situational awareness.

Wireless Intercom Systems

Full-duplex, hands-free systems excel in noisy environments to keep teams connected and focused on the job.

Surveillance Kits

The industry standard and benchmark against which all high-performance wire kits are measured. OTTO Surveillance Kits are uniquely engineered for discreet communications when using a two-way radio. They feature durable, Kevlar-reinforced cables, high-performance speakers and a choice of comfortable earpieces. OTTO Surveillance Kits deliver clear communications, are durable and compatible with a range of radio models and connectors.

A Legacy of Excellence

Every day OTTO’s communication accessories are put to the test by people in the field, many of whom are putting their lives on the line. From high-performance, noise-canceling speaker microphones to hearing protection headsets with full situational awareness; from wireless team intercom systems to discreet wireless surveillance kits, OTTO builds excellence into every product we design, engineer and manufacture.

Unwavering Attention to Detail

OTTO’s in-house engineering team designs for performance and reliability. Whether it’s the comfort of a headset, the size, design and placement of a push-to-talk button, the tensile strength of a cable connection, or the position of a speaker mic clip, every detail of every one of our products is analyzed and well-thought out to provide the best performance over the long haul.

Rigorous In-House Testing

OTTO takes product quality to the next level with our own onsite acoustic performance and product reliability testing labs, in which every product is thoroughly examined under realistic use conditions. Our extensive testing process ensures our customers can trust that our products will provide superior, dependable service in the field. Furthermore, OTTO has maintained ISO 9001 certification for 22 years, and many of our products are RoHS and REACH Compliant and IS/ATEX Certified.

Reliable Beyond Compare

Proudly designed, engineered and manufactured in the U.S.A., OTTO’s two-way communication accessories are built to exacting specifications to ensure flawless performance in a wide range of conditions. Put your trust in OTTO.

Industry Solutions

OTTO is uniquely poised to meet the needs of a range of industries.

Public Safety

  • Law Enforcement
  • Tactical (SWAT)

Industrial Manufacturing

  • Utilities Construction
  • Transportation Mining
  • Warehouse and Distribution


  • Rescue
  • Hazmat

Commercial Retail

  • Hospitality
  • Restaurant Hospital
  • Business Users
  • Casinos Security
  • Facilities Management