Contactor Boards will safely switch on lighting ballasts/fans through its highly rugged internal electrical switching components at times set by you with its included Grasslin Timer. Contactor Boards are made from unbeatable high quality materials with plug sockets and heavy duty wiring made to last. Contactor Boards will soon be known as the best and safest in the UK market!

12/14/16/18 WAY CONTACTOR BOARD MDF 40A GROW LIGHT SOCKET TIMER HYDROPONICS