No need to search for customers, just press the "Call" button, and the pager will ring loudly to alert customers It can improve work efficiency; avoid staff chaos; maintain social distancing; widely used in restaurants Relies on 3 signal modes of vibration, buzzing, and vibration + buzzing to make it suitable for different situations Three-digit LED display, the 999-channel keyboard transmitter can be expanded to the maximum to work with 999 receivers. You can always add more pagers to the system as your business grows. Each restaurant pager is built-in with a rechargeable 3.7V 360mAh battery; low battery indicator; works about 24 hours after a full charge