🥇Display Screen : 📺 A 3-digit (up to 999) red LED digital display screen, designed to be clearly readable from long distances. 🥈Control Unit (Keyboard): ⌨ The device comes with a silver or black keyboard used to request and call numbers sequentially. 🥉Usage : 📝 The system works wirelessly to alert customers when their turn arrives, helping to prevent crowding :100:‍💥 and save waiting time. ⏳💡