ELSE Company Profile

Electro-Sensors, Inc. is engaged in manufacturing and selling industrial production monitoring and process control systems.

In addition, through our former subsidiary ESI Investment Company, we periodically made strategic investments in other businesses and companies, primarily when we believed that these investments would facilitate the development of technology complementary to our existing products. During 2015, we sold substantially all our remaining investments in other businesses and companies. Effective December 31, 2015, we merged ESI Investment Company and Senstar Corporation, a subsidiary with no business operations, into the parent company Electro-Sensors, Inc.

ESI was incorporated in Minnesota in July 1968. Our executive offices are located at 6111 Blue Circle Drive, Minnetonka, Minnesota, 55343-9108. Our telephone number is (952) 930-0100.

We manufacture and sell several different types of monitoring systems that measure actual machine production and operation rates, as well as systems that regulate the speed of related machines in production processes.

Our speed monitoring systems compare revolutions per minute or speed against acceptable rates as determined by a customer. The systems vary in complexity, from a simple system that detects slow-downs or stoppages, to more sophisticated systems that warn of deviations from precise tolerances and that permit various subsidiary operations to be determined through monitoring the shaft speed.

The speed monitoring systems also include a line of products that measure production counts or rates, such as parts, gallons, or board feet. The speed monitoring systems also include alarm systems, tachometers, and other devices that translate impulses from the sensors into alarm signals, computer inputs, or digital displays that are usable by the customer.

We also offer production monitoring devices that include a tilt switch, vibration monitor, and slide gate position monitor. A tilt switch is designed to alert the operator when a storage bin or production system reaches a certain capacity (e.g., when grain fills a silo). A vibration monitor will alert an operator when the vibration of a machine in a production system exceeds or is less than a specified level. The slide gate position monitor is used in plant operations to provide feedback of the position of a slide gate. As part of our Electro-Sentry Hazard Monitoring system, we also have temperature sensors that are used to monitor bearing temperature and belt misalignment.

We have several products used in drive control systems that regulate the speed of motors on related machines in a production sequence to ensure that the performances of various operations are coordinated. The products consist of a line of digital control products for motors that require a complete closed loop PID (Proportional Integral Derivative) control. The closed loop controllers coordinate production speed among process motors and reduce waste.

We have a sales agreement with Motrona GmbH, a German control and interface devices manufacturer, under which we have the right to distribute Motrona products in the United States. These products interface with our products on various applications.

We expect to continue to expend resources to develop new products and to market new and existing products for use in a wide variety of monitoring applications.