I got one from a local tropical fish/reptile shop but you can get them at a lot of reptile shops online, can even get them from amazon, its a UV light controller
you have to buy diff models to fit diff length bulbs. i like the idea of the cycle unit how it dims on and off to simulate dawn/dusk. looks like they only fit T-8/10 which i thought was t-12 not 10. anyway. these look tempting, i guess they would provide more uniform light across a table, but it the UVB only comes off the ends whats the point. http://www.exo-terra.com/en/products/light_cycle_unit.php