plural of smoke detector

plural of heat detector

A device that detects heat and sounds an alarm.

plural of metal detector

(informal) A polygraph, a device which measures and records several physiological variables such as blood pressure, heart rate, respiration and skin conductivity while a series of questions is being asked to a subject, in an attempt to detect lies.

plural of lie detector

plural of junction detector

A device used in security systems that can alert the user of the presence of a moving object.

(historical) An apparatus for recording the time when a watchman visits a station on his rounds.

plural of time detector