# telegraph key

> electrical switch used to transmit text messages in Morse code

**Wikidata**: [Q1156388](https://www.wikidata.org/wiki/Q1156388)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Telegraph_key)  
**Source**: https://4ort.xyz/entity/telegraph-key


## References

1. Freebase Data Dumps. 2013