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Timers designed to measure the duration of each step of cleaning and disinfection of the hands and arms performed at a scrub station. These timers consist of time measuring instruments that may use mechanical, electromechanical, or electronic technologies and audible signal generators (e.g., buzzers) to indicate that the time needed for a particular scrubbing operation has elapsed; some timers may include outputs to the control circuits that operate the water supply, ultraviolet lamps, or other station devices. Scrub station timers are frequently an integral part of the station.
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