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
9
OF
13
If the ambient light increase or decrease are non-zero, then the sensor will send an alert
any time the ambient light changes by the specified amount. For example, if the
ambient light increase and decrease are set to 5 (just a relative measurement, no units
on these values), then an alert is sent every time the ambient light changes by 5 from
the last report. The ambient light increase and decrease are unsigned values.
Periodic reporting is described in the section Periodic Reports.
6.3.3.
Periodic Reports
The ambient light sensor can also send periodic updates, and this is defined in byte 1 of
both modes. A setting of 0 will disable periodic reporting. The period is defined in 1 hour
increments when the most significant bit is 0, and it is defined in 1 minute increments
when the most significant bit is 1 as shown in the following table.
Table 10 Period Bye (byte 1) from Downlink Configuration Message
Bit 7
Bits 6:0
0
Period defined in hours (1-127 hours)
1
Period defined in minutes (1-127 minutes)
For example, to receive a report every 4 hours, byte 1 would be set to 0x04. To receive a
periodic report every 15 minutes, byte 1 would be set to 0x8f.
Note that
prior to firmware version 1.3, only hourly reporting is available
. The
firmware version can be found in the reset message and is logged on the Radio Bridge
console.
Periodic reporting is not recommended as it will increase data service
fees and significantly reduce battery life. Wherever possible, use
thresholds or report-on-change only.
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