[Skunkworks] Electric In-socket Electrical Timer

The Electricians on the list, Anyone know where I can get an in-socket electrical time (the type you replace the socket switch with) preferably a digital one? Something similar to this: http://www.amazon.co.uk/gp/product/B0041MG7UU/ref=s9_simh_gw_p23_d0_g23_i1?p...