W
IRELESS
A
MBIENT
L
IGHT
S
ENSOR
C
OPYRIGHT
©
2019,
R
ADIO
B
RIDGE
I
NC
.
W
IRELESS
A
MBIENT
L
IGHT
S
ENSOR
P
AGE
8
OF
13
1
Periodic reporting minute or hour intervals. Default is 0 (disabled)
2
Restoral margin (bits 3:0 only).
3
Lower ambient light threshold.
4
Upper ambient light threshold.
The upper and lower ambient light thresholds are unsigned values and should fall on the
scale 0-255.
The Restoral Margin is used for the upper and lower thresholds and requires the
ambient light value to cross back over the threshold a certain amount before a new
event is reported. This prevents excessive event messages if the ambient light is at or
near the threshold.
For example, consider an upper light threshold set at 100 and the restoral margin set at
5. If the ambient light initially exceeds 100 then an event is generated and a message is
sent to the network. The ambient light must now drop to 95 and then exceed 100
before another event is reported.
The restoral margins are unsigned values (1-15) and if it is set to 0, the feature is
disabled.
Periodic reporting is described in the section Periodic Reports.
6.3.2.
Report on Change Mode
Report on Change mode is set when byte 0 of the payload is set to 0x01. The remainder
of the payload is defined in the following table.
Table 9 Downlink Configuration Message for Report on Change Mode
Byte Description
0
0x01 (Report on Change mode)
1
Periodic reporting in minute or hour intervals. Default is 0 (disabled)
2
Not used
3
Ambient light increase
4
Ambient light decrease
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