relay

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Definitions:

An electromechanical device that completes or interrupts an electrical circuit by physically moving conductive contacts. The resultant motion can be coupled to another mechanism such as a valve or breaker.
Sources:
NIST SP 800-82r3 from The Automation, Systems, and Instrumentation Dictionary

A scheme deployed on a given blockchain to receive and verify transactions from another blockchain.
Sources:
NISTIR 8301

Glossary Comments

Comments about specific definitions should be sent to the authors of the linked Source publication. For NIST publications, an email is usually found within the document.

Comments about the glossary's presentation and functionality should be sent to secglossary@nist.gov.

See NISTIR 7298 Rev. 3 for additional details.