| | Cutler Controls Inc (Horsham, PA) Industrial control systems & sensors | |
| | DDP Co (Livonia, MI) Ultrasonic sensors | |
| | Digital Interface Systems Inc (Youngstown, OH) Data acquisition systems, time & delay controls, potosensing & infrared sensors & network interrogations | |
| | Dynamic Manufacturing Inc (Pittsburgh, PA) Circuit board & cable assembling; gas sensors | |
| | Elektron Systems Inc (St Petersburg, FL) Research & development: electronic sensors & signal processors | |
| | Ennovation Of Wisconsin Inc (Watertown, WI) Industrial speed sensors | |
| | Environmental Technology Inc (South Bend, IN) Electronic controls & sensors; computer peripheral equipment | |
| | Fast Heat Inc (Elmhurst, IL) Manufactures thermocouples; band & electric heating elements & sensors, controllers & cartridge heaters, hot runner systems & components & electronic temperature controls | |
| | FSI/Fork Standards Inc (Lombard, IL) Optical encoders, machine vision systems & photo electric sensors | |
| | Furnace Control Corp (Brookfield, WI) Carbon sensors for heat treating furnaces | |
| | Heraeus Electro-Nite Co (Merrillville, IN) Heating sensors & thermocouples | |
| | Hi-Stat Manufacturing Co Inc (Sarasota, FL) Manufacture automotive distance, speed, & temperature sensors; solenoid valves, vacuum switches & pressure transducers | |
| | Honeywell International (Freeport, IL) Electrical & electronic switches; industrial, photoelectric & proximity controls & control sub-systems; solid state sensors & pressure transducers | |
| | Integrated Sensing Systems Inc (Ypsilanti, MI) Micro sensors | |
| | Intelliray Inc (Decatur, IN) Manufacture industrial infrared sensors | |
