Cirronet and RF Monolithics to Exhibit Broad Range of M2M Wireless Solutions at Embedded Systems Conference Silicon Valley April 3-5, 2007

Embedded Systems Conference

ATLANTA & DALLAS--(BUSINESS WIRE)--RF MONOLITHICS (“RFM”) AND CIRRONET, INC. (“Cirronet”). (a subsidiary of RFM) announces its joint exhibit at the Embedded Systems Conference Silicon Valley in San Jose, California, April 3-5, 2007, at the San Jose Convention Center. The exhibit will include a broad range of Cirronet brand wireless sensor networking solutions and parent company RFM’s brand of Virtual WireTM short-range radio and RFIC devices that provide sensor data collection capabilities for a wide variety of applications

Cirronet is known for its wide breadth of high quality wireless solutions that enable wireless data when and where you need it. They will be exhibiting their complete line of embeddable OEM modules including their family of ZigBeeTM modules and gateways, 802.15.4 modules, proprietary mesh modules, proprietary frequency hopping modules, BluetoothTM modules and industrial 802.11g modules. Cirronet products are available in the 433MHz, 900MHz and 2.4GHz license-free bands.

The RFM products exhibited include Virtual Wire short-range radio devices based on RFM's ultra low power, proprietary amplifier-sequenced hybrid (ASH) radio architecture and are available in 303.825MHz, 315MHz, 418MHz, 433.92MHz, 868.35MHz, 914MHz, and 916.5MHz license-free bands, and 2) RFIC products that include PLL-based, single- or multi-channel transceiver, transmitter and receiver products and evaluation boards available in 300-1,000MHz license-free bands.

About Cirronet

Cirronet supplies wireless modules and box products for the industrial market to device OEM manufacturers, integrators, and end users. Its products enable customers to wirelessly monitor and control electronic devices by establishing wireless connection between machines and the internet. Its OEM modules are incorporated into custom wireless solutions ranging from portable heart monitors to overhead crane controls, and its industrial box products provide wireless connections in harsh industrial environments. Cirronet’s products are based on proprietary and industry standard protocols that include ZigBee, BluetoothTM , and WIFI; and they operate in the license-free 900 MHz, 2.4 GHz and 5.8 GHz ISM bands. Please visit Cirronet’s web site at www.cirronet.com. Cirronet is a wholly owned subsidiary of RF Monolithics, Inc.

About RFM

Celebrating over 27 years of providing low-power wireless solutions, RFM (NASDAQ: RFMI), headquartered in Dallas, Texas, is enabling the next generation of wireless applications with a solutions-driven, technology-enabled approach to wireless connectivity. RFM provides the connections to extend the edge of the Internet to communicate with the billions of unconnected machines through a broad range of low-power wireless solutions – from comprehensive industrial wireless sensor networks to high-performance RF components. RFM was named to M2M Magazine’s “2007 M2M 100,” a list of the most important and influential machine-to-machine technology providers. For more information on RF Monolithics, Inc., please visit the Company’s website at http://www.rfm.com.