panel board
/ˈpanl ˌbɔːd/noun
1A wooden board used as a panel. Frequently: specifically a piece of heavy or dense fibreboard; (as a mass noun) this type of board.
2A panel on which switches, gauges, etc., are mounted for the remote control or monitoring of equipment; a control panel.
Origin
Mid 19th century; earliest use found in The Times. From panel + board.