A good thermostat such as a Johnson's, Ranco, Herpstat, etc. or a cheap "reptile" thermostat such as a ZooMed, Alife, etc? Hopefully you're not talking about a home thermostat
Any thermostat(made for reptiles heating requirements) will(or should) have a plug on the unit itself to either plug the heat mat, flexxwatt, heat panel into or you can plug a power strip into the thermostat and then plug multiple heating devices into the strip.
Just wondering which thermostat you are asking about?