Reports Increase in Second-Quarter Profits

FREMONT, Calif., July 25, 2002--Scientific Technologies Incorporated (Nasdaq:STIZ), a North American leading provider of automation safeguarding technology, announced today the results of operations for the quarter ended June 30, 2002.

Sales for the three months ended June 30, 2002, increased 9% to $12,653,000, compared to $11,581,000 recorded for the same period of 2001. Net income was $143,000, or $.02 per diluted share, compared to a net loss of $959,000, or $.10 per share, for the same period last year. Year-to-date sales for the six months ended June 30, 2002, were $23,701,000, compared to $25,904,000 recorded in the comparable period of 2001, with a net loss for the first six months of 2002 being $64,000, or $.01 per share, as compared to a net loss $378,000, or $.04 per share, for the same period in 2001.

Joseph J. Lazzara, President and Chief Executive Officer, noted: "We are pleased that our second-quarter results were profitable, and are encouraged by improvements sequentially over the first quarter of 2002. Sales grew by 15% and gross margin remained constant at 44% of sales, resulting in the $143,000 profit for the second quarter of 2002. We continue to be negatively affected by the volatile global economy, however, and remain cautious, although encouraged, given the second-quarter results, about our expectations for the balance of the year 2002."

Second-Quarter Highlights

The following items occurred or were announced over the past quarter:

-- STI commenced deliveries of the new MCJ4700 Safety Light Curtain. The MCJ4700 is a jointed multi-segmented, multi-plane safety light curtain that does not require cabling between segments. Each segment is connected via an innovative electro-mechanical joint. The advantage of the MCJ4700 is its highly configurable design, used to provide a precise protection zone when guarding a machine's hazardous point of operation.
-- STI was awarded two U.S. patents for its innovative MCJ4700 product.
-- We announced our MS4600-EP Explosion Proof Safety Light Curtain and also introduced a new product guide to explosion proof light curtains. The guide includes product information and specifications on several optical safeguarding products rated for explosive environments, often found in industries such as chemical processing, waste water, petroleum and pharmaceuticals.
-- During the second quarter we completed shipment of a significant order for our Vehicle Scanner product to the Pennsylvania Turnpike Commission for use in their electronic toll collection.
-- STI's Automation Sensor Division moved to a new, custom-built facility in Logan, Utah, in June 2002. The Division had been in three locations and is now centralized in one facility, which contains sales, administration, engineering and manufacturing functions.
-- The Company promoted James M. Vella to Vice President and General Manager, Automation Products Group. Mr. Vella has been with STI for 16 years holding positions with increasing levels of responsibility, including finance, marketing and management.

About Scientific Technologies Inc.

Scientific Technologies, Inc. (STI) is a North American leading provider of automation safeguarding products through its Safety Products Group. STI's safety products are used to protect workers around machinery, automated equipment and industrial robots. Our products serve a wide variety of applications and markets, including semiconductor, automotive, electronics manufacturing, packaging and consumer markets. Our web site is located at www.sti.com.

STI's Automation Products Group serves the factory automation, semiconductor, transportation, oil and gas, consumer and food processing industries with a diversified offering of sensing technologies. Products include level, flow, pressure sensing, positioning transducers, vehicle separation, profiling and ultrasonic sensors and controls.

With headquarters in Fremont, STI was founded over 30 years ago and employs over 330 people. STI has been selected twice by Forbes and three times by Business Week as one of the "world's best small companies."

This news release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, including statements regarding operating results for the balance of 2002. These statements are not guarantees of future performance and are subject to certain risks, uncertainties and assumptions that are difficult to predict. Factors that could affect the Company's actual results include the level and timing of customer orders, the mix of products sold, fluctuations in sales of complementary third-party products with which the Company's products are sold, the timing of operating expenditures, general economic conditions in the U.S. and abroad, competition, the Company's ability to introduce successful new products and other factors that are listed from time to time in the Company's SEC reports, including, but not limited to, the Company's Annual Report to Shareholders, Form 10-K and reports on Form 10-Q.

Reports First Quarter 2002 Sales and Earnings

FREMONT, Calif., May 1, 2002--Scientific Technologies Incorporated (Nasdaq:STIZ) today announced sales of $11,048,000 for the three months ended March 31, 2002, compared to $14,323,000 recorded for the same period in 2001.

Net loss for the first quarter of 2002 was $207,000, or $.02 per share compared to a net profit of $580,000, or $.06 per diluted share in the first quarter of 2001.

Joseph J. Lazzara, President and Chief Executive Officer noted, "Although our first quarter results continued to be negatively impacted by global economic conditions, we were encouraged by improvements sequentially over the fourth quarter of 2001. Revenue grew by 5%, gross margin increased to 45% of sales compared to 37% in the 2001 fourth quarter, and our loss was reduced to $207,000 or $.02 per share from $1,213,000 or $.13 per share in the final quarter of 2001."

"In addition, we are pleased to report the receipt of a significant order for Vehicle Scanners from the Pennsylvania Turnpike Commission during the first quarter. We anticipate that the revenue associated with this order will be recognized during the second quarter of this year. STI's Vehicle Scanner is used in electronic toll collection applications to determine the presence of and verify the separation between vehicles to trigger the toll collection."

About Scientific Technologies Inc.
Scientific Technologies, Inc. (STI) is a leading North American provider of automation safeguarding products through its Safety Products Group. STI's safety products are used to protect workers around machinery, automated equipment and industrial robots. Our products serve a wide variety of applications and markets, including semiconductor, automotive, electronics manufacturing, packaging and consumer markets.

STI's Automation Products Group serves the factory automation, semiconductor, transportation, oil and gas, consumer and food processing industries with a diversified offering of sensing technologies. Products include level, flow, pressure sensing, positioning transducers, vehicle separation, profiling and ultrasonic sensors and controls.

With headquarters in Fremont, STI was founded over 30 years ago and employs over 330 people. STI has been selected twice by Forbes and three times by Business Week as one of the "world's best small companies."

This news release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, including statements regarding the recognition of revenues in the second quarter of 2002. These statements are not guarantees of future performance and are subject to certain risks, uncertainties and assumptions that are difficult to predict. Factors that could affect the Company's actual results include the level and timing of customer orders, the mix of products sold, fluctuations in sales of complementary third party products with which the Company's products are sold, the timing of operating expenditures, general economic conditions in the U.S. and abroad, competition, the Company's ability to introduce successful new products and other factors that are listed from time to time in the Company's SEC reports, including but not limited to the Company's Annual report to Shareholders, Form 10-K and reports on Form 10-Q.

Reports Fourth Quarter and Year End 2001 Results

FREMONT, Calif., March 13, 2002--Scientific Technologies Incorporated (Nasdaq:STIZ), a North American leading provider of automation safeguarding technology, announced today the results of operations for the quarter and year ended December 31, 2001.

Sales for the three months ended December 31, 2001 were $10,565,000, compared to $15,572,000 recorded for the same period of 2000. The Company recorded a net loss of $1,213,000 or $.13 per basic and diluted share for the quarter compared to net income of $1,222,000 or $.13 per basic and diluted share during the same period last year. Year to date sales for the year ended December 31, 2001 were $48,289,000, as compared to $59,263,000 recorded in 2000, with a net loss for the year of $1,425,000 or $.15 per basic and diluted share compared to net income of $5,631,000 or $.58 per basic and diluted share for the year 2000.

Commenting on the results, Joseph J. Lazzara, President and Chief Executive Officer, stated, ``Fiscal year 2001 was extremely disappointing for STI, as this constituted our first annual loss in 17 years. During the fourth quarter of 2001, the industrial automation and capital goods markets were reeling from the financial impact of September 11 and our results for the quarter were negatively affected by the reduction in business. From a financial perspective, this was especially disheartening, as the Company had completed a profitable third quarter and had looked for continued recovery in the balance of the year.

"Nevertheless, we proceeded to take actions to enhance the long-term performance of STI, with initiatives including the continuation of our Research and Development programs, which yielded several exciting new products introduced in 2001, such as the MCJ Series, a unique jointed safety light curtain, and the MG Series, a rugged light curtain designed to withstand tough automotive environments. Furthermore, with the acquisition of Dunn Sales, Inc. this past year, we added service, machinery repair and safety product installation to increase our range of automation safeguarding products and services.

"In addition, the Board of Directors decided that, in light of current economic conditions and the quarterly results, STI would not declare a dividend for the quarter. Moreover, the Company will continue the cost reduction programs that commenced in April 2001.

"We were heartened by the loyalty, dedication and performance of our employees who participated in our cost reduction programs during 2001, a year of emotional and economic difficulties.''

About Scientific Technologies Inc.
Scientific Technologies, Inc. (STI) is a leading North American provider of automation safeguarding products through its Safety Products Group. STI's safety products are used to protect workers around machinery, automated equipment and industrial robots. Our products serve a wide variety of applications and markets, including semiconductor, automotive, electronics manufacturing, packaging and consumer markets.

STI's Automation Products Group serves the factory automation, semiconductor, transportation, oil and gas, consumer and food processing industries with a diversified offering of sensing technologies. Products include level, flow, pressure sensing, positioning transducers, vehicle separation, profiling and ultrasonic sensors and controls.

With headquarters in Fremont, STI was founded over 30 years ago and employs over 330 people. STI has been selected twice by Forbes and three times by Business Week as one of the ``world's best small companies.''

Reports Profitable Third Quarter 2001 Results

FREMONT, Calif., October 30, 2001--Scientific Technologies Incorporated (Nasdaq:STIZ) North America's leading provider of automation safeguarding technology announced today the results of operations for the quarter ended September 30, 2001. Sales for the three months ended September 30, 2001 were $11,821,000, compared to $14,992,000 recorded for the same period of 2000. The Company recorded net income of $167,000 or $.02 per share for the quarter compared to net income of $1,604,000 or $.17 per diluted share during the same period last year. Year to date sales for the nine months ended September 30, 2001 were $37,725,000, as compared to $43,691,000 recorded in the comparable period of 2000, with a net loss for the first nine months of 2001 of $211,000, or $.02 per share compared to net income $4,409,000 or $.46 per diluted share for the same period last year.

Commenting on the results of the quarter, Joseph J. Lazzara, President and Chief Executive Officer stated, "During the quarter our semiconductor equipment, industrial automation, machine tooling and capital goods customers continued to be negatively affected by a slowing US economy which resulted in a revenue slowdown at STI. This slow down, coupled with a shift in our traditional sales mix to products with a higher relative cost, caused a drop in gross margins and operating results as compared to the comparable periods in 2000. In spite of this we were able to record a small profit as a result of continued cost control measures initiated in the second quarter. The profit of $167,000 or $.02 per share in the third quarter of 2001 was an improvement from a loss of $959,000 or $.10 per share in the second quarter of 2001." Lazzara also noted that sales for the third quarter were positively impacted by the inclusion of a full quarter of sales by Dunn Sales, which was acquired in June 2001.

Lazzara continued, "The Board of Directors decided that, in light of current economic conditions and the quarterly results, STI would not declare a dividend for the quarter. In addition, the Company will continue the cost reduction program that commenced in April 2001, into the fourth quarter."

About Scientific Technologies Inc.

Scientific Technologies, Inc. (STI) is a leading North American provider of automation safeguarding products through its Safety Products Group. STI's safety products are used to protect workers around machinery, automated equipment and industrial robots. Our products serve a wide variety of applications and markets, including semiconductor, automotive, electronics manufacturing, packaging and consumer markets.

STI's Automation Products Group serves the factory automation, semiconductor, transportation, oil and gas, consumer and food processing industries with a diversified offering of sensing technologies. Products include level, flow, pressure sensing, positioning transducers, vehicle separation, profiling and ultrasonic sensors and controls.

With headquarters in Fremont, STI was founded nearly 30 years ago and employs over 350 people. STI has been selected twice by Forbes and three times by Business Week as one of the "world's best small companies."

Reports Second Quarter 2001 Results

FREMONT, Calif., August 2, 2001--SCIENTIFIC TECHNOLOGIES INCORPORATED (Nasdaq:STIZ) North America's leading provider of automation safeguarding technology announced today the results of operations for the quarter ended June 30, 2001. Sales for the three months ended June 30, 2001 were $11,581,000, compared to $15,209,000 recorded for the same period of 2000. The Company experienced a net loss of $959,000 or $.10 per share for the quarter compared to net income of $1,652,000 or $.17 per diluted share during the same period last year. This was the Company's first net loss in 14 years. Year to date sales for the six months ended June 30, 2001 were $25,904,000, as compared to $ 28,699,000 recorded in the comparable period of 2000, with the net loss for the first six months of 2001 being $378,000, or $.04 per share as compared to net income $2,805,000 or $.29 per diluted share for the same period last year.

Commenting on the results of the quarter, Joseph J. Lazzara, president and chief executive officer stated, "During our second quarter, markets served by STI such as semiconductor equipment, industrial automation, machine tooling and capital goods have been negatively affected by slowing US economic conditions. These conditions served to impact STI's operating results lowering gross margins through reduced sales volumes, increases to reserves and a shift in our traditional sales mix to products carrying higher relative costs of sales. One time charges of $1,217,000 ($754,000 or $.08 per share after taxes) were related to increases in reserves for accounts receivable and inventories, and credits associated with STI's termination of two distributor relationships. The latter items, resulted from inventory returned in accordance with our agreements with these distributors."

Lazzara continued, "STI has had 57 profitable quarters and we continue to review all expense levels as we weather the current economic slowdown. From a Board level, it has been decided that, in light of current economic conditions and the quarterly results, STI would not declare a dividend for the quarter. In addition, the Company has expanded a cost reduction program that commenced in April 2001, which will continue into the third quarter with even greater focus on closing sales and qualifying our pipeline of sales activities.

During the second quarter STI also acquired Dunn Sales Inc., a leading provider of safeguarding equipment installation, rebuilding, repair and maintenance of fabricating machinery. This acquisition serves to help diversify revenue streams for STI and is in keeping with our drive to become the leading single source for safeguarding products, solutions, maintenance and services."

About Scientific Technologies Inc.

Scientific Technologies, Inc. (STI) is a leading North American provider of automation safeguarding products through its Safety Products Group. STI's safety products are used to protect workers around machinery, automated equipment and industrial robots. Our products serve a wide variety of applications and markets, including semiconductor, automotive, electronics manufacturing, packaging and consumer markets. Our web site is located at www.sti.com

STI's Automation Products Group serves the factory automation, semiconductor, transportation, oil and gas, consumer and food processing industries with a diversified offering of sensing technologies. Products include level, flow, pressure sensing, positioning transducers, vehicle separation, profiling and ultrasonic sensors and controls. Further information is available at the Group's web sites: www.automationsensors.com, www.stiscanners.com and www.fibermonitoring.com.

With headquarters in Fremont, STI was founded nearly 30 years ago and employs over 350 people. STI has been selected twice by Forbes and three times by Business Week as one of the "world's best small companies."

Announces Increased Quarterly Dividend for Ninth Consecutive Year

FREMONT, Calif., June 14, 2001--Scientific Technologies Incorporated ("STI") (Nasdaq:STIZ) today announced that it will pay a regular quarterly dividend of $.0525 per share on all outstanding shares of its Common Stock.

This dividend will be payable on July 5, 2001 to all shareholders of record as of June 23, 2001. This dividend represents a 5.0% increase over the dividend of $.05 per share paid to STI shareholders in the comparable quarter in 2000.

This is the 41st consecutive quarterly dividend paid by STI, the fourteenth consecutive year that the Company paid a dividend and the ninth consecutive year that STI has increased the dividend amount. STI cannot assure that the Company's financial performance or cash requirements will allow it to pay dividends to its shareholders in the future.

Scientific Technologies, Inc. (STI) is the leading North American provider of automation safeguarding products and services through its Safety Products Group. STI's safety products are used to protect workers around machinery, automated equipment and industrial robots. Our products serve a wide variety of applications and markets, including semiconductor, automotive, electronics manufacturing, packaging and consumer markets. Our web site is located at www.sti.com.

STI's Automation Products Group serves the factory automation, semiconductor, transportation, oil and gas, consumer and food processing industries with a diversified offering of sensing technologies. Products include level, flow, pressure sensing, positioning transducers, vehicle separation, profiling and ultrasonic sensors and controls. Further information is available at the Group's web sites: www.automationsensors.com, www.stiscanners.com and www.fibermonitoring.com.

With headquarters in Fremont, STI was founded nearly 30 years ago and employs over 400 people. STI has been selected twice by Forbes and three times by Business Week as one of the "world's best small companies."

Acquires Dunn Sales Inc.

FREMONT, Calif., June 12, 2001-- Scientific Technologies Inc. (Nasdaq:STIZ) ("STI") the North American leader in the manufacturing and marketing of specialty automation safeguarding products, announced today the completion of their acquisition of all the outstanding stock of Dunn Sales Inc. ("DSI.").

The transaction, to be accounted for under the purchase method of accounting, is an all cash transaction.

Commenting on the acquisition, Joseph J. Lazzara, president and chief executive officer of STI stated: "We are delighted with the transaction. The acquisition of DSI is in keeping with our commitment of making people safe and productive by incorporating DSI's extensive experience in safeguarding equipment installation and machine services such as the repair, rebuilding and preventative maintenance of fabricating machinery. In conjunction with STI's 300 distributor locations across the U.S., the acquisition of DSI positions STI as the leading single source for automation safeguarding products, solutions and services. Together, I believe our two companies can expand the breadth and reach of our products and services and capitalize on the tremendous cross selling opportunities that this acquisition provides."

Following the closing of the acquisition, the operational headquarters for DSI will remain in Anaheim, California. Gary Dunn, DSI founder, will continue in his capacity as president of DSI, with DSI a wholly owned subsidiary of STI.

About Dunn Sales:

Founded in 1988, DSI is a privately held company located in Anaheim, California, offering both safety and machinery services. The company provides safety services such as: safeguarding equipment installations, machine safety assessments, and the design and custom fabrication of guarding solutions. Furthermore, DSI specializes in machinery services including the repair, rebuilding, relocation, sales, installation and service of fabricating machinery. Over the past decade, DSI has become one of the largest and most recognized independent fabricating machinery service, sales and maintenance companies domiciled in the western United States. DSI serves customers in a variety of industries, including metal fabrication, aerospace, electronics and food processing. Further information on DSI is available at: www.dunnsales.com.

About Scientific Technologies Inc.

Scientific Technologies, Inc. (STI) is a leading North American provider of automation safeguarding products through its Safety Products Group. STI's safety products are used to protect workers around machinery, automated equipment and industrial robots. Our products serve a wide variety of applications and markets, including semiconductor, automotive, electronics manufacturing, packaging and consumer markets. Our web site is located at www.sti.com.

STI's Automation Products Group serves the factory automation, semiconductor, transportation, oil and gas, consumer and food processing industries with a diversified offering of sensing technologies. Products include level, flow, pressure sensing, positioning transducers, vehicle separation, profiling and ultrasonic sensors and controls. Further information is available at the Group's web sites: www.automationsensors.com, www.stiscanners.com and www.fibermonitoring.com.

With headquarters in Fremont, STI was founded 30 years ago and employs 350 people. STI has been selected twice by Forbes and three times by Business Week as one of the "world's best small companies."

This news release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, including with respect to STI's ability to address market opportunities for machinery services, installations, safety evaluations and repairs. In addition to the risks generally associated with acquisitions, such as the successful integration of operations and retention of employees, the DSI acquisition will subject STI to additional risks and uncertainties. For example, there can be no assurance that DSI will continue to: successfully provide its safety and machinery services, that its services will receive widespread market acceptance, that following the acquisition DSI's customers will continue to utilize DSI services at levels at or above pre-acquisition levels, that STI will be able to identify and capitalize on cross selling opportunities, that STI will be able to integrate these services successfully in its sales channels or that any such sales will be incremental to STI's business. In addition, the market for fabricating machine services is subject to competition, and price pressure. These risks and uncertainties could cause STI's actual results to differ materially from those anticipated. Risks generally associated with STI's business are discussed in the documents STI files from time to time with the Securities and Exchange Commission, including its Form 10-K for fiscal 1999 and 2000 and its Form 10-Q for the quarters ended March 31, 2001, June 30, 2000 and September 30, 2000.

Reports First Quarter 2001 Sales and Earnings

FREMONT, Calif., May 3, 2001--SCIENTIFIC TECHNOLOGIES INCORPORATED (Nasdaq:STIZ) today announced sales of $14,323,000 for the three months ended March 31, 2001, compared to $13,490,000 recorded in 2000, an increase of 6%.

Net income for the first quarter of 2001 was $580,000, or $.06 per diluted share compared to $1,154,000, or $.12 per diluted share in the first quarter of 2000, a decline of 50%.

Joseph J. Lazzara, President and Chief Executive Officer noted, "First quarter shipments were positively impacted by the full quarter contribution of PSI-Tronix Technologies, which was acquired late in the first quarter of 2000. PSI-Tronix is a major part of the Automation Products Group. Our first quarter sales and operating results were negatively affected by economic conditions in the U.S. industrial automation and capital goods markets. The Safety Products Group also experienced a shift in sales mix to products carrying a higher relative cost of sales. In light of the soft U.S. economy, we initiated a cost reduction program in the Company on April 1, 2001."

During the first quarter of 2001, STI commenced shipments of two new safety light curtains, the MC 4700 and the MG 4600 Series. An ultracompact transmitter and receiver allow the MC 4700 to be mounted on small automatic assembly machines and other applications where a standard safety light curtain was previously too large. The rugged MG 4600 series was designed to meet the stringent safeguarding requirements of automotive applications.

About Scientific Technologies Inc.

Scientific Technologies, Inc. (STI) is a leading North American provider of automation safeguarding products through its Safety Products Group. STI's safety products are used to protect workers around machinery, automated equipment and industrial robots. Our products serve a wide variety of applications and markets, including semiconductor, automotive, electronics manufacturing, packaging and consumer markets.

STI's Automation Products Group serves the factory automation, semiconductor, transportation, oil and gas, consumer and food processing industries with a diversified offering of sensing technologies. Products include level, flow, pressure sensing, positioning transducers, vehicle separation, profiling and ultrasonic sensors and controls. Further information is available at the Group's web sites: www.automationsensors.com, www.stiscanners.com and ww.fibermonitoring.com.

With headquarters in Fremont, STI was founded nearly 30 years ago and employs over 400 people. STI has been selected twice by Forbes and three times by Business Week as one of the "world's best small companies."