P.A system kya hai or Fire Talk back system kya hai||Fire P.A system Live demo video.P.A full form

Most respectfully all the viewers and my noble friends i am sharing with in this video what is P.A system and what is talk back system with P.A system and talk back system Live demo.
P.A system kya hai or Fire Talk back system kya hai||Fire P.A system Live demo video.P.A full form.
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Talk back system
talk back system
talk back is on press and hold volume and volume for 3 second to turn off mi6a
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[@hi_nick_j]

Sir PA system ka full form public announcement system hota Hai

[@EducationalandbasicInformation]

Ha ji

[@sudhirdushing2068]

As per NFPA 72 full form of PA system is PUBLIC ADDRESS SYSTEM

[@EducationalandbasicInformation]

Thank you so much.right