A: Here's your pager. When your order is ready, the pager will go off. You can then come pick it up.
B: Thank you.

响 对讲机 警示音

点菜呼叫器

(restaurant) pager

pager = 早时候用的BB Call，而现在在餐厅使用的取餐呼叫器也称为 pager