EAO Switch Corp. (Milford, CT), a global supplier of human-machine interface (HMI) components and systems, has extended its relationship with D-M Associates (Westerville, OH) to include coverage for Indiana and Kentucky. D-M Associates is EAO’s authorized sales representative in the Midwest and provides manufacturing for medical and other applications. Customers in Indiana and Kentucky will have access to EAO’s line of HMI components as well as design and integration capabilities through D-M’s local sales and technical support. D-M manufactures a variety of switches, which the companies say will complement EAO’s products. D-M employs 11 personnel to support EAO’s customer base.