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Audio door phones

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Audio

— call panels that are not equipped with cameras and allow only voice communication between the visitor and the owner. The advantage of this option is the low cost, the disadvantage is the inability to see the interlocutor (however, in some cases this is not required — for example, if the entrance is visible directly from the window).
audio door phones
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Grandstream GDS3705
Door Phone Grandstream GDS3705
SIPPOEsmart card readeralarm ports
hinged, embedded, audio, card reading, alarm ports, POE, working t -30 °C ~ +60 °C

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