Phase IV Engineering, Inc.

Founded in 1992, Phase IV Engineering, Incorporated, provider of world-class RF solutions, is a veteran-owned small business headquartered in Boulder, Colorado.

For over eighteen years Phase IV has been engaged in research, development and production of both passive and active wireless sensing and monitoring products. We are the inventors of passive (battery-free) wireless sensing based on RFID (Radio Frequency Identification) technology. Our passive technology provides the communications and identification capabilities of RFID with sensing and monitoring included.

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