V-Tech AT25_D4 Manual - Manual (Page 7)

This system have auto-alarm function to ensure the security for the house owner. Total 4
different sensors were placed to protect different defense area. When the sensor was triggered,
the monitor will sent out alarm sound immediately and will sent the alarm signal to the guard
center at the same time. Note that your system may not have all the 4 sensors according to the
system configuration.
○ Intruction：
9. Defense Alarm Function(Optional)
Motion Sensor
Delay sensor, normally it
will be placed on doors
or windows. If the sensor
is set, when the door or
window is opened, the
monitor will sent out
alarm sound and sent the
alarm signal to the guard
center.
Infrared Sensor
Delay sensor, can be
placed on living room
or bedrooms. When the
sensor is set, if some body
invade into the defence
area, the monitor will sent
out alarm sound and sent
the alarm signal to the
guard center. You can set
this sensor when nobody
at home.
Smoke Sensor
24-hour sensor, this sensor
is opened by the system by
default. It can be placed on
living room or kitchens.
if any fire happened in
the area, the monitor will
sent out alarm sound and
sent the alarm signal to the
guard center.
Emergency Help Button
24-hour sensor, this sensor
is opened by the system by
default. It can be placed
any where suitable. if any
fire happened in the area,
the monitor will sent out
the emergency help signal
to the guard center.
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