4
Note:
If no key has been pressed, it will return to MODE 1 automatically after 12
seconds.
While you are setting the sensor, the function of detecting trigger-ON is set to
disable to avoid false detection (because hands may obstruct the light to
Illumination Sensor during setting). The sensor must be placed still for 12
seconds for the detecting function to be enabled again. If trigger-ON value is
preset and the sensor is re-powered, it will take 10 seconds before the detecting
function is enabled.
The lux trigger-ON and trigger-OFF cannot be set equal; there MUST be at least
100 LUX differences between them. For example, if now the trigger-OFF lux is
already set to be 200 LUX, so trigger-ON lux can only be set
≦
100 LUX or
≧
300 LUX (values between 100 LUX and 300 LUX cannot be set).
1.3 Lux Trigger-OFF
Press
and select MODE 3 to enter setting of lux trigger-OFF. Icon
flashes and the screen shows the recorded trigger-OFF lux. If no value is preset,
the screen will display “
- - -
LUX
”.
To adjust trigger-OFF value, press and hold
for 5 seconds until a long beep
is sounded. The “
- - -
” starts flashing. Use
▲
and
▼
button to adjust the lux value,
and hold
▲
or
▼
button to scan through the lux reading from 30 to 1000 (the lux
value can only be adjusted on the basis of 10 LUX per unit; the default value is 300
LUX). Once the value is selected, press
to confirm setting or press
ESC/
to cancel.
To clear the trigger-OFF record, press both
▲
and
▼
at the same time. The
record is cleared after a long beep is sounded.
If lux of ambient light is greater than preset trigger-OFF value, Illumination Sensor
will emit RF signal to the nodes of Grouping 2. The screen of sensor will return to
MODE 1 and the icon
is flashing with backlight illuminates and 4 continuous
beeps sound for 1 second. Press any key to stop the beep tone.
A mechanism of 12-second placing still is designed to prevent the sensor being
triggered rapidly. Suppose the ambient light is changing rapidly, if trigger-ON value
is preset and has been triggered, and the ambient light has reached a lux level that
is higher than preset trigger-OFF value soon after, the sensor will not be triggered
until 12 seconds later. Please refer to FIGURE 7 for illustration of how the
mechanism operates.
If no trigger-ON value is preset, to avoid the problem of consecutive triggering, the
sensor has to be placed still for 2 minutes (restriction) before lux trigger-OFF is
enabled again. To clear this restriction, the detected lux value of ambient light
during this 2 minutes period MUST be lower than the preset trigger-OFF value,
otherwise the sensor will keep recounting the time before it can be triggered again
(FIGURE 8).
FIGURE 6
FIGURE 8
FIGURE 7
Preset trigger-ON
(500 lux)
Restriction
Clear
Lux trigger-ON
(triggered)
1500 lux
200 lux
Ambient
Light
Lux trigger-ON
(re-triggered)
2 minutes
(restriction)
|
|
Ambient
Light
Restriction
Clear
Preset trigger-OFF
(1000 lux)
1500 lux
200 lux
Lux trigger-OFF
(re-triggered)
Lux trigger-OFF
(triggered)
2 minutes
(restriction)
|
|
Lux trigger-OFF
(triggered)
No Response
12 seconds
|
|
Ambient
Light
Lux trigger-ON
(triggered)
Preset trigger-OFF
(1000 lux)
Preset trigger-ON
(500 lux)
1500 lux
200 lux
