THE 10000-WATT DIGITAL SCR-CONTROLLER I ORDERED CAME EXACTLY AS ADVERTIZED,,, A VERY NICE UNIT,,, "SMALLER THAN I THOUGHT IT WOULD BE",,,, I AM USING IT TO CONTROL MY ELECTRIC HEAT,,, I PUT A BIGGER HEAT-SINK WITH SMALL BRUSH-LESS FAN,,, I AM CONTROLLING ABOUT 4800-WATTS,,,WITH NO HEAT BUILD-UP,,, THE REMOTE CONTROL IS A NICE FECHER,,,SO FAR IT ALL WORK'S VERY WELL.