... , hotel , coffe house and so on.Wireless call button , 10colours for your choice. 1 key ,3key. ... Water proof!Wrist Watches! Button call to the wrist watchesThe waiter will receive the ... Wireless receiver, installed on the count 2. Call button, installed on each table3. Signal repeater (optional), ... table.2. When the customer presses the call button on their table, their table number will ...