The NFT series of preset recycling timers from CAP are the simplest devices available for turning a device on and off at precise intervals. The NFT-2 Timer is preset at 3 minutes on and 5 minutes off. Plug the NFT into any standard outlet. Plug whatever you want to control into the receptacle on the front face, and you're done. NFT timers are rated for 15 amps @ 120 volts.