It is a Thinkware F770, 1080p front and rear. I've just been and checked the heat coming of it after being in parking mode for 2 hours and it is very little (just noticeable with the back of my hand). The rear one doesn't seem to give off any heat at all to the touch yet there was a clear patch on the rear window this morning but only the size of a two pence piece. I think it is normal and no cause for concern. The condensation on the car after having it ceramic coated seems different, producing minute droplets of water, so maybe that's why I never noticed it on the Audi. The cameras are on brackets that stand off the screen by about 1mm so very close. The camera system has Intergrated Thermal Protection. I have sent the photo to the installer just to be sure.