Our son loves the Fireman Sam and takes any pressure from the printer and indicates a fire alarm - but he lacked the appropriate alarm button. He has now and which makes even a loud alarm sound! As parents, we love the existing on-off switch. I had imagined the buzzer larger, slimmer fit - but even that is absolutely perfect for our use. After Saturday at the hardware store did not succeed to get a corresponding emergency switch, we ordered over prime, and the switch was delivered on Mondays. Perfect.