Applicable scene 4S store; bank; factory; shopping mall; recreation center; restaurant;coffee shop; food court; Dessert ;clinic; church; auto shop; Dining hall；test center or other queue occasions Three mode to choose， meet different business environment demands When in quiet church; you can adjust to Vibration with Flash mode; In noisy environment; Buzzer with Flash or Buzzer+Vibration+Flash are the best choice; this call system is fully achievable; Package Include: 1 x Keypad transmitter 20 x Coasters 2 x Charging base 3 x Power adaptor 1 x English manual Wide Application: It is widely used in restaurants, food trucks, churches, clinic,Hosptial,health club and other places where many guests wait for service. It can help people get rid of the trouble of queuing and enjoy the best pleasure of life. About Us