The Infratech 14-4210 is an economical way to control the intensity of your heater. They need to be installed directly into the line between the main power source and the heater. The regulator works like the temperature control on an appliance.
When you use the 14-4210 single flush mount regulator, your infrared heater will oscillate off and on with the frequency dependent upon the setting selected. The power capability is not greater than 15 amps and should be used on heaters with 3000 watts or lower.