Talks to the visitor over the handset and unlocks the door.
An audio indoor unit for analog 2-wire intercom systems. Instead of a screen it uses a handset and mechanical buttons, and it supports the Braille alphabet for visually impaired users.
Handset conversationIt answers calls from the telephone handset; the built-in speaker and the receiver speaker carry two-way audio.
Analog 2-wire lineIt communicates over an analog 2-wire line and draws power from the distributor.
Alarm input and doorbellIt carries a 2-channel alarm input and connects a doorbell through these ports.
Braille supportIt supports the Braille alphabet, and the user tells the mechanical buttons apart by touch.
Status indicators4 status indicators show the current state of the device, and the power indicator switches off when preferred.
One-touch controlA single touch answers the call, unlocks the door, switches on Do Not Disturb and mutes the device; it also adjusts ringtones and volume.
