The decision comes down to whether wires can be run inside the wall. Imou DB-2SP and DB-3EP are kits in which the doorbell sends the picture straight to your phone. Dahua VTO outdoor panels and VTH indoor monitors, on the other hand, form a two-wire video intercom where the call is answered on a 7- or 10-inch wall screen — that suits a house or a stairwell with several flats. Make sure the outdoor panel and the indoor monitor belong to the same system.
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The decision comes down to whether wires can be run inside the wall. Imou DB-2SP and DB-3EP are kits in which the doorbell sends the picture straight to your phone. Dahua VTO outdoor panels and VTH indoor monitors, on the other hand, form a two-wire video intercom where the call is answered on a 7- or 10-inch wall screen — that suits a house or a stairwell with several flats. Make sure the outdoor panel and the indoor monitor belong to the same system.