
1. One door station can up to four indoor phones.
2 . Easy installation using supplied connection cable.
3 . Compact Infrared LED is compactly designed, it can be used at night, or
in dark places without adding any extra lighting .
4. High resolution black and white 4 ″ picture(or other size picture)or color
5. Connection layout:4wires
6 . Low power consumption.
7 . Trans m ission line distance is far. ( ≥ 100m)
8 . Two kinds of unlock way (able chose one kind of them)
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