4-key service button for restaurant service calling

widely used in restaurant, tea & coffee house, hotel, executive dining room, hospital, nightclub, bowling alley, spa & salon, KTV, church, health club, golf country club, office, factory, etc.

Y-Q4 433Mhz Wireless Calling System Signal Enhancer

Digital Hospital nurse call substation for emergency call/E5BC-G32-70 Hospital Management System Nurse Care

Desk-type transmitter of Guest Paging System