Doorphone (Telephone Line)
– Installation is limited to supplying the unit with power and telephone line.
– Suitable for both old and new apartment buildings.
– Residences of the building can gain entry into the premises by keying in a pre-defined
– Secret code, such code can be changed at will.
– With H.K. Telecom ‘follow me’ funcation you can keep in touch with visitor stay anywhere.
