| Subject | English | Slovak |
| commun., transp., avia. | automatic relay installation | automatické prenosové zariadenie |
| el. | back up protection relay | ochranné zariadenie |
| commun., transp., avia. | fully-automatic relay installation | automatické prenosové zariadenie |
| el. | protection relay | ochranné zariadenie |
| el. | protective relay | ochranné zariadenie |
| comp., MS | relay host | server relay host (A designated server through which Exchange routes all outgoing messages. The smart host then makes the remote connection. If a smart host is designated, the Exchange server only needs to transmit to the smart host, instead of repeatedly contacting the domain until a connection is made) |
| comp., MS | relay port | prenosový port (A type of class port that defines the internal and external ports of an actor class. Can appear only on the border of an actor class. Relay ports relay incoming messages to a contained actor or outgoing messages from a contained actor) |
| commun., transp., avia. | semi-automatic relay installation | poloautomatické prenosové zariadenie |
| transp. | shunt relay | napájacie relé |
| commun., transp., avia. | torn-tape relay installation | prenos pomocou trhanej pásky |