HIKVISION DS7208HVI-ST/SE Panduan Produk/Pemeliharaan - Halaman 14
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5.8. Voice Talkback Module
Voice talkback module main control chip: TW2866 (US1), PIN 2 through
3.9 K resistance (RS60) + 560Ωresistance (RP24) output Aout
Voice talkback module part:
TW2866 （US1）
(note: voice talkback Line In input and the first road audio input share)
5.9. Power Supply Module
The power module component：
560Ω（RP24）
3.9K（RS60）