Telegraph Key and Sounder Combination

Description (Brief)
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 that activate a register or sounder at the receiving end. This key is mounted with a sounder, a common arrangement.
Object Name
telegraph key
date made
ca 1890
J. H. Bunnell & Co.
Physical Description
brass (overall material)
wood (overall material)
overall: 4 in x 8 3/4 in x 5 in; 10.16 cm x 22.225 cm x 12.7 cm
key: 1 1/2 in x 2 3/4 in x 5 in; 3.81 cm x 6.985 cm x 12.7 cm
sounder: 3 1/4 in x 3 in x 4 1/2 in; 8.255 cm x 7.62 cm x 11.43 cm
ID Number
catalog number
accession number
Telegraph Keys
See more items in
Work and Industry: Electricity
Telegraph Keys
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
from Edward F. Gilroy
Additional Media

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