Electro-Sensors, Inc. manufactures and sells industrial production monitoring and process control systems. The company manufactures and sells various monitoring systems that measure machine production and operation rates, as well as systems, which regulate the speed of related machines in production processes. Its speed monitoring systems include a line of products that measure production counts or rates, such as parts, gallons, or board feet; and alarm systems, tachometers, and other devices that translate impulses from the sensors into alarm signals, computer inputs, or digital displays. The company's temperature application products consist of bearing, gear box, and motor temperature monitoring sensors. It also offers production monitoring devices that include a belt alignment and slide gate position monitors; vibration monitoring products; and tilt switches. In addition, the company provides hazard monitoring systems, such as Electro-Sentry, which integrates its sensors for monitor