Downlink Command

This device supports downlink commands for configuration and control. The downlink application port is 85 by default.

General Setting


Item	Channel	Type	Byte	Description
Reboot	ff	10	1	ff
Collect Interval	ff	02	2	UINT16, Unit: s
Report Interval	ff	03	2	UINT16, Unit: s
Data Storage	ff	68	1	00: Disable, 01: Enable
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:

ff10ff

Set collect interval as 20 minutes.


ff02b004
Channel	Type	Value
ff	02	b004=>04b0=1200s=20 minutes

Set report interval as 20 minutes.


ff03b004
Channel	Type	Value
ff	03	b004=>04b0=1200s=20 minutes


Channel	Type	Byte	Description
ff	ea	3	Byte 1: 00=Temperature disable, 80=Temperature enable, 01=Humidity disable, 81=Humidity enable Byte 2-3: Calibration value, temperature= INT16/10, humidity=INT16/2

Example:

Enable temperature calibration and set calibration value as -0.3°C.


ffab80fdff
Channel	Type	Value
ff	ea	80=Temperature calibration enable Calibration value: fd ff=> ff fd=-3/10=-0.3°C


Channel	Type	Byte	Description
ff	06	9	Byte 1: 08=Disable, 09=Below (min. threshold), 0a=Over (max. threshold), 0b=Within, 0c=Below or over Byte 2-3: Minimum threshold, INT16/10, Unit: °C Byte 4-5: Maximum threshold, INT16/10, Unit: °C Byte 6-9: 00000000

Example:

Set a temperature threshold as below 15°C or over 30°C.


ff060c96002c0100000000
Channel	Type	Value
ff	06	0c=Below or over Min. threshold: 96 00=>00 96=150/10=15°C Max. threshold: 2c 01 => 01 2c =300/10=30°C


Channel	Type	Byte	Description
ff	79	4	Byte 1: 01=Temperature Threshold Triggered, 02=Temperature Threshold Released Byte 2: 00=Disable, 01=Only D2D, 03=D2D & LoRa Uplink Byte 3-4: D2D Command

Example:

When temperature reaches the threshold, send D2D command 0110.


ff7901011001
Channel	Type	Value
ff	79	01=Temperature Threshold Triggered 01=Only D2D D2D Command: 10 01=>0110