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.
Smoke detector. A smoke detector is a device that senses smoke, typically as an indicator of fire. Commercial security devices issue a signal to a fire alarm control panel as part of a fire alarm system, while household smoke detectors, also known as smoke alarms, generally issue a local audible or visual alarm from the detector itself.