Downlink Command

The device supports to configure the device via downlink commands. Application port is 85 by default.

General Setting

Item Channel Type Byte Description
Reboot ff 10 1 ff
System time ff 11 4 Unix Timestamp, Unit:s
Wi-Fi ff 42 1 00: disable, 01: enable
Clear the accumulated counting ff 51 1 ff
Gateway time synchronization f9 84 3 Byte 1: 01-Enable; 00-Disable

Byte 2-3: Time Synchronization Interval, Unit: min

Log Mode - File f9 89 2 Byte 1: 04

Byte 2: Log file level: 01-Fatal, 02-Error, 03-Warn, 04-Debug, 05-Trace
Example:
  1. Reboot the device.
    ff10ff
  2. Disable Wi-Fi.
    ff42 00
    Channel Type Value
    ff 42 00:Disable
  3. Modify the system time as 2025/05/27 20:44:00.
    ff11 90b33568
    Channel Type Value
    ff 11 90 b3 35 68=>6835B390= 1748349840 s=>2025/05/27 20:44:00

Report Setting

Item Channel Type Byte Description
People Counting Periodic Report ff 43 1 00: disable, 01: enable
People Counting Trigger Report ff 44 1 00: disable, 01: enable
Periodic Report Interval ff 47 2 Unit: s
Periodic Report Scheme f9 8a 1 01-From Now On, 00-On the Dot
Example:
  1. Set Periodic Report Interval as 20 minutes.
    ff47 b004
    Channel Type Value
    ff 47 b004=>04b0=1200s=20minutes

Data Retransmission

Item Channel Type Byte Description
Data Retransmission ff 69 1 00: Disable, 01: Enable
Data Retransmission Interval ff 6a 3 Byte 1: 00

Byte 2-3: UINT16, Unit: s, Range: 30~1200, Default: 600
Example:
  1. Set the data retransmission interval as 1200s.
    ff6ab004
    Channel Type Value
    ff 6a b004=>04b0=1200s

LoRaWAN® Setting

Modifying the following parameters triggers the device to re-enter the network.

Item Channel Type Byte Description
Confirm Mode ff 04 1 00: disable, 01: enable
LoRaWAN® Channel Mask ff 05 3 Byte 1: Channel index range
01: 0-15

02: 16-31

03: 32-47

04: 48-63

05: 64-79

06: 80-95

Byte 2-3: indicate disable or enable via every bit, 0=disable, 1=enable
ADR ff 40 1 00: disable, 01: enable
Application Port ff 41 1 [1-223], Default is 85
LoRa Rejoin Mode f9 85 2 Byte 1: 01-Enable; 00-Disable

Byte 2: The Number of Detection, Range: 4~32
Spreading Factor f9 86 1 00-SF12, 01-SF11, 02-SF10, 03-SF9, 04-SF8, 05-SF7
TX Power f9 87 1 Range: 0~14
Example:
Set AU915 or US915 channel mask as 8-15.
ff0501ff00 ff05020000 ff05030000 ff05040000 ff05050000
Channel Type Value
ff 05

01: Channel index 0-15, ff00 => 8-15 is enabled

02-05: Channel index 16-79, 0000 => all disabled