TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 CONT

Unlike conventional microwave detectors, the 4120 has two receivers. Coupled with digital processing circuits and memory, the 4120 senses motion and determines the net change in distance of an object from the detector.  2, record 1, English, - microwave%20detector

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 CONT

Ces détecteurs incorporent des micro-circuits hybrides qui leur donnent une stabilité et une efficacité de performance sans égales. Ils comprennent aussi un dispositif de contrôle de la sensibilité particulier pour éliminer les fausses alarmes.  4, record 1, French, - d%C3%A9tecteur%20%C3%A0%20micro%2Dondes

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 CONT

Currently available dual channel motion detectors combine either an active ultrasonic or microwave detector with a passive infrared detector.  1, record 2, English, - dual%20channel%20motion%20detector

Record 2,  Textual support,  French

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 CONT

Active motion detectors fill the volume in range of the detector with either ultrasonic, microwave, or sonic energy. The transmitted energy forms a standing wave pattern as it reflects from the objects and walls in the room. Some of this energy is reflected back to the detector receiver, where it is received and processed. When there is a disturbance in the received signal due to someone moving within the protected area, the processor initiates an alarm.  1, record 3, English, - active%20motion%20detector

Record number: 3, Textual support number: 1 OBS

Active detection system: a ... system which emits energy as a means of detection.  2, record 3, English, - active%20motion%20detector

Record 3,  Textual support,  French

Record 3,  Textual support,  Spanish