Y-O-C: one CALL key; Y-Cancel (cancel stick) widely used for restaurant, cafe, bar, drink service.

waiter call button table call button used for restaurant, hotel, hospital, etc. 

wireless call button (1 key: call  2 keys: call, cancel 3 keys: call, cancel, bill）

4-key service button for restaurant service calling

4-key service button for restaurant service calling

Wireless nurse call systems Call button Y-SW-G33 with handset

wireless call button

Y-O 1-key Call Button in red/black

Single Key Button of wireless calling system

Single Key Button of 433Mhz frequency wireless calling system

Waterproof Restaurant Wireless Call Button 

Waterproof wireless 433Mhz table bell for restaurant