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ADVISIN intercom AD-12A, Audio door phone, 12 bus wire two cores in the house ADVISION intercom AD-12A , audio door phone, provides audio input systems for residential buildings,12 bus wire two cores in the house. The ADVISIN intercom AD-12A , features an alloy steel housing surface, waterproof metal buttons, a high-strength internal computer and modern [...]

ADVISION intercom AD-4A, the voice door phone, provides audio input systems for residential buildings. Four bus wires two cores in the house.

ADVISIN intercom AD-8A , Audio door phone, Eight bus wires two hearts at home ADVISION intercom AD-8A , the voice door phone, provides audio input systems for residential buildings. Eight bus wires two hearts at home. The ADVISIN intercom AD-8A , features an alloy steel housing surface, waterproof metal buttons, a high-strength internal computer and [...]