video door intercom,video door phone,video intercom,SAVM1-7W 1.7inch color TFT 2.metal 3.FC\CE video door intercom,video door phone,video intercom,SAVM1-7W(1)7 ... -7W Feature : Hand-free;UltrathinDesign;aluminumalloy case Function:Visitor calling, video intercom, unlock, monitor. Two monitor to one camera is optional . Specification ...