The Performer s1200 has a protection circuit against DC voltage and against overheating. If direct current (DC) is detected, the output stage switches off automatically and the Protect LED lights up red.
To protect the s1200 against the unlikely event of overheating, a temperature sensor at the heatsinks continously monitors the temperature of the device. The TEMP LED lights up yellow when the Performer s1200 is getting too hot.
As a result of this the output stage is switched off and the fans run on high-speed until the device has cooled down.