i need help makeing a overheat warning light. i know NTCT only conducts when 100 degrees, but is there a way to make it conduct when its at like 500 degrees? and if not how can i make a warning light that goes off when it reaches 500 degrees. its for a jet engine btw

thats a good idea. im no good at electronics, could you ake one for me that automatically adds more fuse powder? i will credit you. 

thanks man ill credit :D