Denzel Washington on screen and stage. Denzel Washington is an American actor who made his feature film debut in Carbon Copy (1981).[1] In 1982, Washington made his first appearance in the medical drama St. Elsewhere as Dr. Philip Chandler.
Report Abuse. Sprinklers do not detect smoke. Some operate by a fuse that melts, from the heat of a fire, to release water, others operate by a sudden drop in water or air pressure in the pipe which is controlled by a alarm system, when activated.
The Duct Smoke Detector is a regular smoke detector that samples air from an air duct. It is used to shut down air handling units and air handlers to stop the spread of smoke. It also sends signals to the fire alarm system. Douglas Krantz.