You can use the PHR03 wireless RF remote control or the PHR04 (key chain) both of which also _require_ the X10 pro transciever (PAT 01): http://www.thehomeautomationstore.com/x10prowirelessremotes.html
You can also use the PMC01 Mini controller: http://www.thehomeautomationstore.com/pmc01.html
You can also use the PHC02 Pro maxi controller: http://www.thehomeautomationstore.com/phc02.html
Answers & Comments
You can use the PHR03 wireless RF remote control or the PHR04 (key chain) both of which also _require_ the X10 pro transciever (PAT 01):
http://www.thehomeautomationstore.com/x10prowirelessremotes.html
You can also use the PMC01 Mini controller:
http://www.thehomeautomationstore.com/pmc01.html
You can also use the PHC02 Pro maxi controller:
http://www.thehomeautomationstore.com/phc02.html
Warning! This stuff is addicting :-)