In noisy restaurant kitchens the arrival at the printer of a new order or of an order-change can be easily overseen. This could lead to unhappy customers or dishes that have to be scrapped. The kitchen alarm system HERALD will announce the arrival of an order at the printer. This is done by means of optical (flash light) or acoustic (beep or ring) signals or by both of them. Depending on the kind of order (new order or order change) the type of signal, the intensity and frequency can be programmed by the user.