Relay (disambiguation)

Relay (from old French: relais = leave behind) stands for:

Relay , electrically operated and mostly electromagnetically acting switch
Signal relay , a relay in railway safety technology
Relay (post office) , station for changing riding or carriage horses
Relay station , radio station for transmissions over long distances without a direct connection
Repeater , signal regenerator for converting and forwarding received signals
Relay mode, mode of operation for simultaneous interpreting, see Interpreting # Relay
Relay (military) , formerly an equestrian division for the transmission of messages in the military
Relais (fortress) , in the case of fortifications, the path between the fortress wall and the fortress moat
A pneumatic relay in organ building is used for pulse refreshment or pulse amplification

See also: