Remote control light dimmer
 

I'm usually using two soft boxes w/a 500W in most of my events for the reception and sometimes for the ceremony if it's dark. Last event I did I was advised by the party planner that I should have a remote control for my lighting. I figured he was talking about a dimmer remote control but I'm not sure where to get it. If anyone here is using a remote control for the lighting please advise me where I can find those in local stores.