The Integrated, Intra-Squad Radio (IISR) is a secure handheld 2-way radio, produced by Motorola

Motorola

Motorola, Inc. was an American multinational telecommunications company based in Schaumburg, Illinois, which was eventually divided into two independent public companies, Motorola Mobility and Motorola Solutions on January 4, 2011, after losing $4.3 billion from 2007 to 2009...

 for the US Marine Corps. Its intended purpose is squad-level communications during urban warfare

Urban warfare

Urban warfare is combat conducted in urban areas such as towns and cities. Urban combat is very different from combat in the open at both the operational and tactical level...

. The USMC has ordered 60,000 radios to be used until replaced by the more complex JTRS cluster 5 spiral 2 radio in 2013. The IISR is similar in form and function to a Motorola XTS 2500i with embedded encryption module, which was essential to provide secure voice communications, especially in war zones.

The USMC uses primarily the IISR Microphone (part# 85035-35) produced by Xacore

Xacore

Xacore, established in 2004, is a US based radio audio accessories manufacturer. Xacore is focused on manufacturing audio accessories for use by law enforcement and military with their two-way radios. Xacore is a member of General Dynamics’ EDGE and contributes to radio headsets of the future...

as their radio audio accessory. The USMC has ordered 70,000 units which are a product of Canada.