Theodore and Ann Konopelski have listed for sale a six-bedroom, six-bath home at 2227 Devonsbrook Dr. in Clarkson Valley for $639,900.

The 4,136-square-foot house was built in 1990 in the Clarkson Valley North neighborhood. Peggy Fox of Prudential Alliance is the listing agent for the home.

Mr. Konopelski serves as the general manager of M7 Electro-Optics, a manufacturer of lasers and high-voltage systems. Prior to joining M7, he held several significant roles at Cutting Edge Optronics and he was the director of military laser systems for the McDonnell Douglas Corporation from 1987 to 1993.

He also holds a B.S.E.E. from Cornell University and an M.S.E.E. from Syracuse University.

According to BlockShopper.com, there have been 33 home sales in Clarkson Valley during the past 12 months, with a median sales price of $528,000.

Address: 2227 Devonsbrook Drive