Dragino LDS03A, Manual

Page: 18 / 33

www.dragino.com
LDS03A Outdoor Open/Close Door Sensor
18 / 33
2. Manually Set Time
Users need to set
SYNCMOD
=0 to manual time, otherwise, the user set time will be overwritten
by the time set by the server.
2.4.3 Poll sensor value
Users can poll sensor values based on timestamps. Below is the downlink command.
Downlink Command to poll Open/Close status (0x31)
1byte 4bytes 4bytes 1byte
31 Timestamp start Timestamp end Uplink Interval
Timestamp start and Timestamp end-use Unix TimeStamp format as mentioned above. Devices
will reply with all data logs during this period, using the uplink interval.
For example, downlink command 31 618E5740 618E8170 05
Is to check 2021/11/12 12:00:00 to 2021/11/12 15:00:00 ’s data
Uplink Internal =5s
，
means LDS03A will send one packet every 5s. range 5~255s.
2.4.4 Decoder in TTN V3
Please check the decoder from this link:
https://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDS03A/paylo
ad_decode/