| Subject | English | Spanish |
| tech. | frequency sensor | sensor de frecuencia |
| tech. | frequency sensor | perceptor de frecuencia |
| comp., MS | radio frequency identification sensor | sensor de identificación por radiofrecuencia (A type of sensor (such as a proximity sensor) that uses radio frequency identification (RFID) for a numerous purposes, such as identification of physical items, automatic log on, location of people, etc) |