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联系人 Mr. john
people road, Longyou, zhejiang
Function 1)Applies to the villa or single room 2)Supports door bell, intercom, video, monitoring and the door releasing 3)Outdoor camera with infrared auxiliary 4)Supports 4 indoor phone parallel connection and inter-call 5)Indoor phone support several chord bell selectable 6)Mate with remote controller 7)Connection layout: 4wires
