Wireless management systems tails. These systems can be used in restaurants, bars, hotels, hospitals, shops, care of the elderly, etc. Wireless call system queuing customers. Customers no longer have to wait in line to receive your order or be served. The operation is simple, because the customer pays your order and receive a wireless module with a numeric codenico. When the order is ready to serve, you call the customer pressing the number assigned to your module. The client module emits a light signal and a vibration. At that time the customer knows that your order is ready to be recogico. The client proceeds with the collection of the order and return the module.