Pigeon grill black 750 sandwitch griller is a product that can only be used for sandwitch making thats it .Yeah it have a indicater button in red or green .You start it the red button will be automatically on once the sandwitch will be prepared it will turn itno green , and then you can open the lock that is on handle and you ready with sandwitch .Once I tried to grill bitter gaurd and sponge gaurd and I failed .