Telegraph keys are electrical on-off switches used to send messages in Morse code. The message travels as a series of electrical pulses through a wire. The operator pushes the key’s lever down briefly to make a short signal, a dot, or holds the lever down for a moment to make a slightly longer signal, a dash. The sequence of dots and dashes represent letters and numbers. This key is a very simple type known as a strap key.
Our collection database is a work in progress. We may update this record based on further research and review. Learn more about our approach to sharing our collection online.