I believe so, yes. I use my 850 to control my x-10 lighting, and I used my MX-700 to do the same. I'm pretty sure the 800 will do so as well. If you lighting system has a remote, you can "teach" the MX remotes. If, like the X-10, your lighting doesn't have a remote, many .ccf code files are available at Remote Central which can be used with the HTM software's Universal Browser. Codes for lighting systems with remotes are also available at Remote Central.

Jack

"People generally quarrel because they cannot argue." - G. K. Chesterton