annunciator meaning in Hindi

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In 1870, Gray developed a needle annunciator for hotels and another for elevators.
The stall warning system is a voice annunciator that says " stall, stall ".
An aviation annunciator panel will have a test switch to check for burned out lamps.
The firm published a booklet in 1936 titled " Electric Reset Annunciators, Signaling Systems and Accessories ."
The crew-alerting system ( CAS ) is used in place of the annunciator panel on older systems.
He also installed a call bell system, with buttons in each room and an annunciator in the back hall.
Alternatively new annunciator panels are utilizing long lasting and bright LEDs that significantly reduce the cost and maintenance of the panels.
The Call Annunciator used speech recorded on strips of photographic film to verbally announce the called number to the answering operator.
Applications for isolated relays include controlling power supplies, turning on motors and annunciator lamps, and actuating pneumatic or hydraulic valves.
In areas with mostly manual switches, the Call Annunciator signaling system was used to avoid installing lamp panels at every operator station.

noun.

an indicator that announces which electrical circuit has been active (as on a telephone switchboard)