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.

4-key service button for restaurant service calling

one key call button used in restaurant, hotel, etc.

call bill cancel three keys press button used in restaurant, hotel, etc.

used in office, hotel, supermarket, bar, etc