PSI Wireless - Probe Science Inc. provides high technology wireless communication products and services to industrial OEMs and government services.  PSI specializes in unique products and communications techniques, with particular emphasis on Spread Spectrum, featuring high speed correlation, fast acquisition, and low power consumption.

PSI, founded in 1989, is a privately held small business, located in Pasadena, California. Established originally as a consulting venture, PSI incorporated in 1993 and offers, in addition to design and consulting services, a number of products and proprietary techniques for utilization in wireless communications products.

PROBE is an acronym for a low power position location system "Position Reporting on Background Emission," which is a key technological capability that led to the founding of the company.  QFAST "Quadrature Fast Acquisition Spread Spectrum Technology" is a registered Trademark covering patented technology licensable from PSI.  PSI holds 12 patents in various wireless technologies, particuarly spread spectrum technology and RFID, with several more pending.

We are located in Southern California, but service the entire US, and have also engaged in international projects.