Features:
1) 30s sixteen-chord melody ring, 120s confidential conversation
2) 3 kinds of ring tone available to easily identify different door station
3) 3-level volume adjustable
4) Flush-mount for door station
5) Trigger signal to unlock (workable with various locks)
6) Power supply: adapter plug-in
9) One door station can support 32 indoor phones at most, different door panel
optional
10) Dimension:
a) Door station: WL-02NE (1 x 4) 260 x 130 x 52mm
b) Indoor phone: WL-02NEFC 204 x 88 x 65mm