Concealed Flush Button_toilet Flush Button Plate_flush Plate

Sold by Everything washroom & Kitchen · Accra Metropolitan

The item in your photo is called a flush plate (also commonly known as an actuator plate, flush actuator, push plate, or toilet flush button plate). It's the visible wall-mounted panel you press to activate the flush for a concealed cistern (the hidden tank behind the wall for wall-hung or back-to-wall toilets, often called "concealed water closets" or in-wall toilets).