Feature:1. The wireless queuing calling system brings great convenience to guests. After ordering, guests can rest in the vacant seat rather than wait in line.2. Super long signal receiving distance, guests can get themselves sit anywhere in the restaurant, or stroll around, waiting for the receiver to remind them to fetch their meals.3. Adopt professional highend processing chipset, builtin highperformance noise reduction coding and decoding circuit, featuring fast heat dissipation and strong stability.4. The product is made of durable and antiimpact ABS engineering plastic material so it has long service life to save the costs for the restaurants.5. The appearance of the round disc receiver is personalized and stylish, so that the guests not only enjoy the meal but also experience dining enjoyment brought by hightech, as well as the satisfaction of being respected.6. Other restaurants have gradually used this meal picking device, if you still do not innovate and keep up with the trend, you are regressing.Specification:Item Type: Wireless Queuing Calling SystemKeyboard Transmitter:Size: 120x80x30mm / 4.72x3.15x1.18inWorking Voltage: DC12VWorking Frequency: 433.92MHZWorking Current: 20030mAStandby Current: 6010mACoding Method: Learning CodeDisc Receiver:Color: red Size: 69x69x12mm / 2.72x2.72x0.47inWorking Voltage: DC3.7V (rechargeable battery)Charging Voltage: DC5V 4AWorking Frequency: 433.92MHZWorking Current: 13020mAStandby Current: <143mADecoding Method: Learning CodeBattery Capacity: 280mAhFunction: Smart charging, low battery prompt, online search, vibration, sound, light rotation, can change the prompt at will, maximum support 999 receivers.Package List:1 x Keypad Transmitter20 x Receiver2 x Charging Dock1 x Power Adapter1 x Manual Note:The receiving distance across walls is 50-100 meters, and the receiving distance in the open space is 1500 meters.