Industry, Power, Electricity, New Smart Meter fitted to domestic home supply.

Industry, Power, Electricity, New Smart Meter fitted to domestic home supply.

Ireland, County Donegal, Inishowen Peninsula, Malin Head, Napoleonic watchtower located on the area called Banba's Crown which is the most northerly point in Ireland.

Transport, Railway, Steam, Locomotive with driver and stoker looking back along the platform.

Scotland, Edinburgh, Leith, cobbled quayside and Signal Tower.

Scotland, Edinburgh, Leith, The Shore at sunset with the Signal Tower.

USA, New York State, New York City, Manhattan, Typical office building in the Chelsea area.

USA, New York, Manhattan, People in Times Square by pedestrian crossing sign with a red hand illuminated to stop and do not cross beside a sign that says Wait For Walk Signal.

England, West Sussex, Shoreham-by-sea, IT Technician programming traffic lights signal box from a laptop computer.

Signal Hill on Pigeon Island National Historic Park seen from a nearby wooden jetty with a table and chairs beside a wrought iron lamppost

Signal Hill on Pigeon Island National Historic Park seen from a nearby wooden jetty with a table and chairs beside a wrought iron lamppost

The isthmus leading to Pigeon Island seen from Signal Hill within the National Historic Park with the Atlantic Ocean on the left and the Caribbean of Rodney Bay on the right