BEI Technologies Introduces MotionPak(R) II Multi-Axis MEMS Inertial Sensing System

    SAN FRANCISCO, July 16 BEI Technologies, Inc.
announced today the introduction of BEI Systron Donner Inertial
Division's MotionPak(R) II, a next generation solid state inertial sensor
system.  The unit incorporates three orthogonally mounted GyroChip(R) quartz
(MEMS) rate gyroscopes and three silicon accelerometers providing outputs of
angular velocity (rate) and linear acceleration about three axes.  These
outputs are in both analog and digital format.  Incorporating BEI GyroChip
technology, the MotionPak II combines the latest advancements in
micro-machined (MEMS) quartz-rate sensors.  This low-cost unit with rugged
construction and outstanding reliability is a highly attractive packaged
system for design, development and production into a wide range of industrial
applications, according to Dr. Asad Madni, president and chief operating
officer.
    MotionPak II can operate from either dual bipolar (+ 15v DC) or single
ended (+11 to +16v DC) supplies, providing high or low resolution outputs with
dual voltage power input or low resolution when only a single sided voltage is
available.  The digital RS 232 output is available with either power input and
the PC based Data Acquisition software is Windows 95/98 and NT 4.0 compatible.
A CD-ROM supplied with each unit incorporates data logging software.
    Suitable for operation at temperatures from -40o C to + 85o C, the
MotionPak II has an internally mounted temperature sensor should thermal
compensation be desirable in the application.  All connections are made via a
standard 25 way 'D' type socket.  The unit weighs 1.26Kg, has a small
footprint of 128mm wide by 113mm high, and is 117mm deep.  Four fixing ears on
the base of the unit are provided for easy mounting.  The versatile fully
self-contained system incorporates internal power regulation and signal
conditioning electronics and is designed for fast start up and long
operational life.  An optional carrying case provides additional protection
for the unit in transit.
    MotionPak II potential applications include: vehicle and maritime
instrumentation, GPS aiding, navigation or stabilization in robotics,
automotive research and development, remote controlled vehicles, attitude
reference systems, underwater, unmanned vehicles and flight-testing equipment.
    BEI Systron Donner is an operating division of BEI Technologies, Inc.  BEI
Technologies, Inc. is an established manufacturer of electronic sensors,
motors, actuators and motion control products used for factory and office
automation, medical equipment, military, aviation and space systems.  In
addition, sales to manufacturers of transportation equipment including
automobiles, trucks and off-road equipment have become a significant addition
to the Company's business in recent years, in particular, sales of the
Company's micromachined quartz yaw rate sensors used in advanced vehicle
stability control systems.  BEI also manufactures electronic steering wheel
position sensors, seat-memory modules, throttle position and pressure sensors
and other devices used in automotive systems.  GyroChip is a registered
trademark of BEI Technologies, Inc.
    Except for historical information, this news release may be deemed to
contain forward-looking statements that involve risks and uncertainties,
including statements with respect to timely development, acceptance and
pricing of new products; impact of competitive products and price; the ability
to manufacture products in sufficient volume on an efficient and timely basis;
general economic conditions as they affect the Company's customers, as well as
other risks detailed from time to time in the Company's reports to the
Securities and Exchange Commission, including the Company's Form 10-K Annual
Report of fiscal  2000.

    CONTACT:  John LaBoskey, Senior Vice President-CFO of BEI Technologies,
Inc., 415-956-4477, web, http://www.bei-tech.com .