Kona LoRa IoT Home Sensor TRM
T0005370_TRM
Version 1.2
TEKTELIC Communications Inc.
Confidential
Page 30 of 35
3.4.7.6
Example DL Messages
In the following example payloads, the Command Field is boldfaced:
•
Set the motion transducer such that motion is detected only if two events occur within
10 seconds. Also, motion detection is cleared if there are no events for 10 minutes
o
Threshold set to 2, Threshold Period set to 10 seconds, and Grace Period set to
10 minutes
o
DL payload: { 0x
D0
02 58
D1
00 02
D2
00 0A }
•
Read the Grace Period, and set the transducer such that the Sensor reports both State
and Event Count in periodic transmissions
o
DL payload: { 0x
50
D3
83 }
3.4.8
Moisture Configuration
The Base Home Sensor is equipped with a capacitance-based moisture detection system. This
allows the Home Sensor to detect the pooling of water (water line leak, spills, etc.) and report
moisture detection events. The moisture transducer (detector) is integrated into the Home
Sensor enclosure base (screw side) and can sense moisture without making physical contact
with the liquid. This transducer does not measure humidity in air. Table 3-20 shows a list of
moisture transducer configuration registers.
Table 3-20: Moisture Transducer Configuration Registers
Address Access Value
# Bytes Description
0x5A
R/W
Sample Period
1
Period of moisture measurement
0x5B
R/W
Threshold
1
Moisture detection threshold
0x5C
R/W
Enable/Disable
1
Moisture sensing enabled/disabled
Only bit 0 is considered. Other bits are
ignored.
0x5D
W
Calibrate Baseline
1
Command to calibrate the transducer as
“
dry
”
3.4.8.1
Sample Period
The moisture transducer is activated periodically to determine if water is present. A smaller
sample period results in a faster response from the Sensor in the event of a leak, however it
results in higher battery usage than a larger sample period.
Supported Sample Periods are as follows:
•
1: 16 seconds