Page 3
Natcomm
DOOR PHONE PERFORMANCE
This product is IDEAL for RESIDENTIAL or COMMERCIAL USE
where ROAD NOISE is NOT HIGH. It is not designed for
INDUSTRIAL USE where ambient noise can be constantly high.
The volume of the audio communication on the internal
phones should be comfortably audible (although not quite as
loud as a telephone call) providing:
The person at the Door Phone is talking directly towards the
Door Phone and at a distance of no more than 500-600mm
away (2 feet).
The Door Phone is mounted at a height of about 1.5 meters
(5 feet). You can mount at a lower level to allow for very young
children but volume may suffer. Please see page 4.
No plates or other material are placed over the front face of
the Door phone. Our Door Phone Cover accessory or a
properly designed Rain Hood will not affect performance.
The volume of the audio communication at the Door Phone
should be comfortably audible providing:
There is not excessive road noise or other noise near the Door
Phone as this will affect the automatic gain circuit used in this
device.
That high quality ADSL FILTERING is fitted ahead of the DS
CONTROLLER where ADSL is used on the same line. If you
do not do so, volume in both directions will be affected. Refer
to your Door Station Controller User Guide for detailed
information on the use of ADSL with this product.
