A set of five LED indicator lights on the side panel of the camera lets you know if your input voltage at the camera is getting too low for normal operation. A green LED lets you know the camera is booting up and gives camera exposure status during normal operation. A red LED provides a warning if the heat sink gets too hot. This could happen, for instance, if you were running high power to the cooler and the fan failed for some reason. In this case the camera automatically reduces power to the two-stage cooler to prevent damage. An amber LED warns of an input voltage drop to 11 volts or less but the camera will continue functioning normally. A second amber LED warns of an input voltage drop to 10 volts but the camera will still continue functioning normally. The last red LED warns of an input voltage drop to 9 volts or less. In this case, the camera automatically turns off the TE cooler and continues to operate normally without cooling until the voltage drops to the point that the camera shuts down (below 7 volts).