“Donuts” can be used to be handed to the costumers when they order something that is not prepared on the spot. Via the donuts are the costumers announced when the order is ready. The donuts are used mainly in snack bars, diners or in the places where the order is taken at the counter/bar.
- shock resistant;
- colours: red/green.

technical specifications:	features:
Weight	86 g
Signals Received	FM 433.92 MHz
Power	3.7V 450 A (Li-polimer Battery)
Size -mm-	¢ 95 * H17