function Dual communication Handset communication Remote control unlock ( Just available at communication) Ringing tune: Dingdong Specification( indoor phone) Housing: ABS Operating....
Shenzhen OPIZ Electronics CO., LTD. has been a leading supplier of video surveillance and some other security equipments for the global market since 1998. We specialize in manufacture video door....
Function 1) Two way communication video transmission door release 2) One button support one unit room 3) Compatibility of video and audio indoor phone 4) Name input 5) Capacity: 3 units 6) ....
Function 1) One button support one unit room 2) Two way communication with indoor phone 3) Compatibility of video and audio indoor phone 4) Video transmission; 5) Name input; 6) Door release ....