A device made up of two separate components. For example, most cellular network extenders require an antenna (box 1), which is cabled to the electronics (box 2) in order to work.
"two-box solution." YourDictionary, n.d. Web. 24 May 2018. <http://www.yourdictionary.com/two-box-solution>.
two-box solution. (n.d.). Retrieved May 24th, 2018, from http://www.yourdictionary.com/two-box-solution