Now conversation is possible and the voice of visitor can be heard from speaker 19 . To talk back
to visitor, press and hold the PTT button 14 and speak towards the Microphone 15 , reception
mode icon D goes off. Release PTT button 14 after finish speaking to listen to visitor, recep-
tion mode icon D show up again. It should be worth noted that the voice of visitor will not be
heard while pressing the PTT button 14 . Upon finish of conversation, press the Hang up button
12 to end the call.
This system has an automatic end call feature. In case the resident does not talk back to visitor
(i.e. press the PTT button 14 ) for over 90 sec, the call will be ended automatically. Such feature
is useful to protect your privacy in case you forget to end the call by pressing the Hang up button
12 .
10. Once a call has been answered, you can use the Door lock open button 13 to remotely open
the electric door latch for visitor (this function only available if your door is equipped with an
electric latch). Press the button 13 shortly, wait for 4-5 seconds and the icon M appears
on the screen, showing the door latch is opened. The icon M will disappear after 3 sec.
To avoid misuse by children, this door lock opening function can be activated or deactivated.
When deactivated, pressing the button 13 will have no effect.
Deactivate door lock opening feature
Under normal operating mode, press shortly the button 17 , then within a period of 2 sec,
press shortly the button 13 . The Door lock de-activated icon E will show up on LCD
screen.
Activate door lock opening feature
Perform same procedure as above, the Door lock de-activated icon E will disappear from the
LCD screen.
11. For system equipped with several handsets, all the handsets will be alerted with an incoming call.
However, only the handset which first press the Answer button 11 can set up conversation
with caller unit. The remaining handsets will return to standby mode and their buttons become
de-activated until the conversation ends, making them impossible to interfere with the conversa-
tion.
11
