Solid State phase angle variable “Triac” knob controller adjusts heat settings from 10-100% with heat loads up to 15.4-Amps||208/240 VAC single-phase, single stage controller, 3200 Watt max||Positive “Off” & built-in On/Off Rocker switch lights “red” during operation||NEMA 1 Aluminum enclosure with stainless steel face plate designed for wall mounting or suitable for semi-recessed applications||Must be mounted in a protected area||Solid State phase angle variable “Triac” knob controller adjusts heat settings from 10-100% with heat loads up to 15.4-Amps||208/240 VAC single-phase, single stage controller, 3200 Watt max||Positive “Off” & built-in On/Off Rocker switch lights “red” during operation||NEMA 1 Aluminum enclosure with stainless steel face plate designed for wall mounting or suitable for semi-recessed applications||Must be mounted in a protected area||Can either operate Quartz Lamps or Quartz Tube Infrared Heatersview less