Securesight VL1 Spécifications télécharger pdf (Page 26)

Page No. 25

©Securesight 2009 E&OE Issue 1.0

We therefore recommend that you position your VL1 at a height of 3 - 4

meters and angled towards the area of interest so that most traffic

crosses the zones and triggers your VL1 to start recording.

The PIR sensor detects

the difference between

objects and ambient air

temperature and will

only trigger when it

detects a hot object

moving across its zones.

Because of this the area

of sensitivity will vary

with changes in

temperature and the size

of the object. Your VL1

will become more

sensitive in winter and at

night when the

difference between the

hot object and the

ambient air temperature

is greatest, with

sensitivity reducing in

summer and during the

day when the difference

is less.

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Securesight VL1 Spécifications Page 26