

QuoteThe Lafayette Model 76875AS Activity Sensor is an accessory to the Lafayette Instrument LX3000 and LX2000 computerized polygraphs. It is designed to detect subtle movements as well as gross movements of a subject during a polygraph examination. By providing a graphic record of subject movement, the Activity Sensor allows the polygraph examiner to concentrate on administering the exam instead of trying to observe the subject's movement. The Activity Sensor is so precise, with a high sensitivity setting, that it may detect heartbeats or respiration signals on some subjects.