Budget ip PA system exist?

Good day! I ran into a problem...
Describe the situation: There are 4 buildings (2 warehouses, 1 workshop and ADM. unit) Required to make the paging system alerts. What I mean by this title: from ADM. block people by pressing a button on the device can shout into the microphone and should hear in the room he chose.
What's the problem?
Analog systems are not considered due to the fact that you have to create a new (analog) communication lines.
Started to look towards ip solutions and gasped... the cost of the speaker more than 30000 RUB.
May I not look back?
April 7th 20 at 11:03
4 answers
April 7th 20 at 11:05
UniFi AP AC EDU as one of the options ready-made solutions.
option redundant. The whole territory is covered by wifi.
Learn how to be called what I need to do, just easier to find them.
Until I realized that if you Google the ip alert system = expensive - duncan70 commented on April 7th 20 at 11:08
well, the systems have the necessary fire certificates - hence the price. - serena.Conroy16 commented on April 7th 20 at 11:11
@serena.Conroy16, I would be something without a certificate, and up to 10K for the speaker =) - duncan70 commented on April 7th 20 at 11:14
April 7th 20 at 11:07
You can solve Wireless system https://habr.com/ru/post/404685/
loudspeaker-receiver-transmitter - elementary method
How do I know. I need a turnkey solution that supports ip telephony. - duncan70 commented on April 7th 20 at 11:10
April 7th 20 at 11:09
maybe not there, immediately naguglit option for 7500+the price of "megaphone" since there's only amp: dev.benitex.ru/domofony-i-peregovornye-ustroystva/...

The farm option: you can take OrangePi Zero 700rub sd card 200rub and complement it with the sip client program, 600R amplifier megaphone 3000rub for a total of 1500 rubles for all.
Thank you! Saw that, not satisfied with the manufacturer. In September 2019 removed all ACMS Commandant for gaven quality... - duncan70 commented on April 7th 20 at 11:12
So I'm looking for is a turnkey solution =) When I see the cost of a 10K my hair stand on end. I think that Google is not correct, would know what it was called correctly. - duncan70 commented on April 7th 20 at 11:15
only cheaper handles do
here sip did OrangePi Zero https://forum.armbian.com/topic/11673-how-to-use-a...

All notification is done based on fire - so are certified and is a horse of money, and all sorts of deshmanskie phone is usually not able(and still farm with amplifier has not been canceled)
In the end your decision lies outside the market. - serena.Conroy16 commented on April 7th 20 at 11:18
@serena.Conroy16, For such good is not willing.. - duncan70 commented on April 7th 20 at 11:21
April 7th 20 at 11:11
As an option, there are IP video cameras with microphone and speaker or a connector for external speaker

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