<
From version < 14.2 >
edited by Xiaoling
on 2022/06/06 16:22
To version < 6.2 >
edited by Xiaoling
on 2022/06/06 15:36
>
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -1,6 +1,7 @@
1 1  (% style="text-align:center" %)
2 2  [[image:image-20220606151504-2.jpeg||height="848" width="848"]]
3 3  
4 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image001.png]]
4 4  
5 5  
6 6  
... ... @@ -8,40 +8,44 @@
8 8  
9 9  
10 10  
11 -= 1. Introduction =
12 12  
13 -== 1.1 ​What is LoRaWAN Soil Moisture & EC Sensor ==
14 14  
15 -(((
16 -The Dragino LSE01 is a (% style="color:#4f81bd" %)**LoRaWAN Soil Moisture & EC Sensor**(%%) for IoT of Agriculture. It is designed to measure the soil moisture of saline-alkali soil and loamy soil. The soil sensor uses FDR method to calculate the soil moisture with the compensation from soil temperature and conductivity. It also has been calibrated in factory for Mineral soil type.
17 -)))
18 18  
19 -(((
20 -It detects (% style="color:#4f81bd" %)**Soil Moisture**(%%), (% style="color:#4f81bd" %)**Soil Temperature**(%%) and (% style="color:#4f81bd" %)**Soil Conductivity**(%%), and uploads the value via wireless to LoRaWAN IoT Server.
21 -)))
22 22  
23 -(((
16 +
17 +
18 +
19 +
20 +
21 +
22 +
23 +1. Introduction
24 +11. ​What is LoRaWAN Soil Moisture & EC Sensor
25 +
26 +The Dragino LSE01 is a **LoRaWAN Soil Moisture & EC Sensor** for IoT of Agriculture. It is designed to measure the soil moisture of saline-alkali soil and loamy soil. The soil sensor uses FDR method to calculate the soil moisture with the compensation from soil temperature and conductivity. It also has been calibrated in factory for Mineral soil type.
27 +
28 +
29 +It detects **Soil Moisture**, **Soil Temperature** and **Soil Conductivity**, and uploads the value via wireless to LoRaWAN IoT Server.
30 +
31 +
24 24  The LoRa wireless technology used in LES01 allows device to send data and reach extremely long ranges at low data-rates. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption.
25 -)))
26 26  
27 -(((
28 -LES01 is powered by (% style="color:#4f81bd" %)**4000mA or 8500mAh Li-SOCI2 battery**(%%), It is designed for long term use up to 10 years.
29 -)))
30 30  
31 -(((
32 -Each LES01 is pre-load with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server and it will auto connect after power on.
33 -)))
35 +LES01 is powered by **4000mA or 8500mAh Li-SOCI2 battery**, It is designed for long term use up to 10 years.
34 34  
35 35  
36 -[[image:1654503236291-817.png]]
38 +Each LES01 is pre-load with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server and it will auto connect after power on.
37 37  
38 38  
39 -[[image:1654503265560-120.png]]
41 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image002.png]]
40 40  
41 41  
44 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image003.png]]
42 42  
43 -== 1.2 ​Features ==
44 44  
47 +
48 +*
49 +*1. ​Features
45 45  * LoRaWAN 1.0.3 Class A
46 46  * Ultra low power consumption
47 47  * Monitor Soil Moisture
... ... @@ -54,35 +54,34 @@
54 54  * IP66 Waterproof Enclosure
55 55  * 4000mAh or 8500mAh Battery for long term use
56 56  
62 +1.
63 +11. Specification
57 57  
58 -== 1.3 Specification ==
59 -
60 60  Measure Volume: Base on the centra pin of the probe, a cylinder with 7cm diameter and 10cm height.
61 61  
62 -[[image:image-20220606162220-5.png]]
63 -
64 -(% border="1" cellspacing="10" style="background-color:#f7faff; width:928px" %)
65 -|=(% style="width: 141px;background-color:#4F81BD;" %)**Parameter**|=(% style="width: 306px;background-color:#4F81BD;" %)**Soil Moisture**|=(% style="width: 332px;background-color:#4F81BD;" %)**Soil Conductivity**|=(% style="width: 146px;background-color:#4F81BD;" %)**Soil Temperature**
66 -|(% style="width:141px" %)**Range**|(% style="width:306px" %)**0-100.00%**|(% style="width:332px" %)(((
67 +|**Parameter**|**Soil Moisture**|**Soil Conductivity**|**Soil Temperature**
68 +|**Range**|**0-100.00%**|(((
67 67  **0-20000uS/cm**
68 68  
69 69  **(25℃)(0-20.0EC)**
70 -)))|(% style="width:146px" %)**-40.00℃~85.00℃**
71 -|(% style="width:141px" %)**Unit**|(% style="width:306px" %)**V/V %,**|(% style="width:332px" %)**uS/cm,**|(% style="width:146px" %)**℃**
72 -|(% style="width:141px" %)**Resolution**|(% style="width:306px" %)**0.01%**|(% style="width:332px" %)**1 uS/cm**|(% style="width:146px" %)**0.01℃**
73 -|(% style="width:141px" %)**Accuracy**|(% style="width:306px" %)(((
72 +)))|**-40.00℃~85.00℃**
73 +|**Unit**|**V/V %,**|**uS/cm,**|**℃**
74 +|**Resolution**|**0.01%**|**1 uS/cm**|**0.01℃**
75 +|**Accuracy**|(((
74 74  **±3% (0-53%)**
75 75  
76 76  **±5% (>53%)**
77 -)))|(% style="width:332px" %)**2%FS,**|(% style="width:146px" %)(((
79 +)))|**2%FS,**|(((
78 78  **-10℃~50℃:<0.3℃**
79 79  
80 80  **All other: <0.6℃**
81 81  )))
82 -|(% style="width:141px" %)(((
83 -**Measure Method**
84 -)))|(% style="width:306px" %)**FDR , with temperature &EC compensate**|(% style="width:332px" %)**Conductivity , with temperature compensate**|(% style="width:146px" %)**RTD, and calibrate**
84 +|(((
85 +**Measure**
85 85  
87 +**Method**
88 +)))|**FDR , with temperature &EC compensate**|**Conductivity , with temperature compensate**|**RTD, and calibrate**
89 +
86 86  *
87 87  *1. ​Applications
88 88  * Smart Agriculture
... ... @@ -143,6 +143,7 @@
143 143  
144 144  )))
145 145  
150 +
146 146  **Step 2**: Power on LSE01
147 147  
148 148  
... ... @@ -761,155 +761,173 @@
761 761  
762 762  
763 763  
764 -= 3. ​Using the AT Commands =
769 +1. ​Using the AT Commands
770 +11. ​Access AT Commands
765 765  
766 -== 3.1 Access AT Commands ==
767 -
768 -
769 769  LSE01 supports AT Command set in the stock firmware. You can use a USB to TTL adapter to connect to LSE01 for using AT command, as below.
770 770  
771 -[[image:1654501986557-872.png]]
774 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image018.png]]
772 772  
773 773  
774 774  Or if you have below board, use below connection:
775 775  
776 776  
777 -[[image:1654502005655-729.png]]
780 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image019.png]]
778 778  
779 779  
780 780  
781 -In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LSE01. LSE01 will output system info once power on as below:
784 +In the PC, you need to set the serial baud rate to **9600** to access the serial console for LSE01. LSE01 will output system info once power on as below:
782 782  
783 783  
784 - [[image:1654502050864-459.png]]
787 + [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image020.png]]
785 785  
786 786  
787 787  Below are the available commands, a more detailed AT Command manual can be found at [[AT Command Manual>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/]]: [[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/]]
788 788  
789 789  
790 -(% style="background-color:#dcdcdc" %)**AT+<CMD>=?AT+<CMD>? **(%%) : Help on <CMD>
793 +AT+<CMD>?        : Help on <CMD>
791 791  
792 -(% style="background-color:#dcdcdc" %)**AT+<CMD>=?AT+<CMD> **(%%) : Run <CMD>
795 +AT+<CMD>         : Run <CMD>
793 793  
794 -(% style="background-color:#dcdcdc" %)**AT+<CMD>=?AT+<CMD>=<value>**(%%) : Set the value
797 +AT+<CMD>=<value> : Set the value
795 795  
796 -(% style="background-color:#dcdcdc" %)**AT+<CMD>=?AT+<CMD>=?**(%%)  : Get the value
799 +AT+<CMD>=?       : Get the value
797 797  
798 798  
799 -(% style="color:#037691" %)**General Commands**(%%)      
802 +**General Commands**      
800 800  
801 -(% style="background-color:#dcdcdc" %)**AT**(%%)  : Attention       
804 +AT                    : Attention       
802 802  
803 -(% style="background-color:#dcdcdc" %)**AT?**(%%)  : Short Help     
806 +AT?                            : Short Help     
804 804  
805 -(% style="background-color:#dcdcdc" %)**ATZ**(%%)  : MCU Reset    
808 +ATZ                            : MCU Reset    
806 806  
807 -(% style="background-color:#dcdcdc" %)**AT+TDC**(%%)  : Application Data Transmission Interval 
810 +AT+TDC           : Application Data Transmission Interval 
808 808  
809 809  
810 -(% style="color:#037691" %)**Keys, IDs and EUIs management**
813 +**Keys, IDs and EUIs management**
811 811  
812 -(% style="background-color:#dcdcdc" %)**AT+APPEUI**(%%)              : Application EUI      
815 +AT+APPEUI              : Application EUI      
813 813  
814 -(% style="background-color:#dcdcdc" %)**AT+APPKEY**(%%)              : Application Key     
817 +AT+APPKEY              : Application Key     
815 815  
816 -(% style="background-color:#dcdcdc" %)**AT+APPSKEY**(%%)            : Application Session Key
819 +AT+APPSKEY            : Application Session Key
817 817  
818 -(% style="background-color:#dcdcdc" %)**AT+DADDR**(%%)              : Device Address     
821 +AT+DADDR              : Device Address     
819 819  
820 -(% style="background-color:#dcdcdc" %)**AT+DEUI**(%%)                   : Device EUI     
823 +AT+DEUI                   : Device EUI     
821 821  
822 -(% style="background-color:#dcdcdc" %)**AT+NWKID**(%%)               : Network ID (You can enter this command change only after successful network connection) 
825 +AT+NWKID               : Network ID (You can enter this command change only after successful network connection) 
823 823  
824 -(% style="background-color:#dcdcdc" %)**AT+NWKSKEY**(%%)          : Network Session Key Joining and sending date on LoRa network  
827 +AT+NWKSKEY          : Network Session Key Joining and sending date on LoRa network  
825 825  
826 -(% style="background-color:#dcdcdc" %)**AT+CFM**(%%)  : Confirm Mode       
829 +AT+CFM          : Confirm Mode       
827 827  
828 -(% style="background-color:#dcdcdc" %)**AT+CFS**(%%)                     : Confirm Status       
831 +AT+CFS                     : Confirm Status       
829 829  
830 -(% style="background-color:#dcdcdc" %)**AT+JOIN**(%%)  : Join LoRa? Network       
833 +AT+JOIN          : Join LoRa? Network       
831 831  
832 -(% style="background-color:#dcdcdc" %)**AT+NJM**(%%)  : LoRa? Network Join Mode    
835 +AT+NJM          : LoRa? Network Join Mode    
833 833  
834 -(% style="background-color:#dcdcdc" %)**AT+NJS**(%%)                     : LoRa? Network Join Status    
837 +AT+NJS                     : LoRa? Network Join Status    
835 835  
836 -(% style="background-color:#dcdcdc" %)**AT+RECV**(%%)                  : Print Last Received Data in Raw Format
839 +AT+RECV                  : Print Last Received Data in Raw Format
837 837  
838 -(% style="background-color:#dcdcdc" %)**AT+RECVB**(%%)                : Print Last Received Data in Binary Format      
841 +AT+RECVB                : Print Last Received Data in Binary Format      
839 839  
840 -(% style="background-color:#dcdcdc" %)**AT+SEND**(%%)                  : Send Text Data      
843 +AT+SEND                  : Send Text Data      
841 841  
842 -(% style="background-color:#dcdcdc" %)**AT+SENB**(%%)                  : Send Hexadecimal Data
845 +AT+SENB                  : Send Hexadecimal Data
843 843  
844 844  
845 -(% style="color:#037691" %)**LoRa Network Management**
848 +**LoRa Network Management**
846 846  
847 -(% style="background-color:#dcdcdc" %)**AT+ADR**(%%)          : Adaptive Rate
850 +AT+ADR          : Adaptive Rate
848 848  
849 -(% style="background-color:#dcdcdc" %)**AT+CLASS**(%%)  : LoRa Class(Currently only support class A
852 +AT+CLASS                : LoRa Class(Currently only support class A
850 850  
851 -(% style="background-color:#dcdcdc" %)**AT+DCS**(%%)  : Duty Cycle Setting 
854 +AT+DCS           : Duty Cycle Setting 
852 852  
853 -(% style="background-color:#dcdcdc" %)**AT+DR**(%%)  : Data Rate (Can Only be Modified after ADR=0)     
856 +AT+DR                      : Data Rate (Can Only be Modified after ADR=0)     
854 854  
855 -(% style="background-color:#dcdcdc" %)**AT+FCD**(%%)  : Frame Counter Downlink       
858 +AT+FCD           : Frame Counter Downlink       
856 856  
857 -(% style="background-color:#dcdcdc" %)**AT+FCU**(%%)  : Frame Counter Uplink   
860 +AT+FCU           : Frame Counter Uplink   
858 858  
859 -(% style="background-color:#dcdcdc" %)**AT+JN1DL**(%%)  : Join Accept Delay1
862 +AT+JN1DL                : Join Accept Delay1
860 860  
861 -(% style="background-color:#dcdcdc" %)**AT+JN2DL**(%%)  : Join Accept Delay2
864 +AT+JN2DL                : Join Accept Delay2
862 862  
863 -(% style="background-color:#dcdcdc" %)**AT+PNM**(%%)  : Public Network Mode   
866 +AT+PNM                   : Public Network Mode   
864 864  
865 -(% style="background-color:#dcdcdc" %)**AT+RX1DL**(%%)  : Receive Delay1      
868 +AT+RX1DL                : Receive Delay1      
866 866  
867 -(% style="background-color:#dcdcdc" %)**AT+RX2DL**(%%)  : Receive Delay2      
870 +AT+RX2DL                : Receive Delay2      
868 868  
869 -(% style="background-color:#dcdcdc" %)**AT+RX2DR**(%%)  : Rx2 Window Data Rate 
872 +AT+RX2DR               : Rx2 Window Data Rate 
870 870  
871 -(% style="background-color:#dcdcdc" %)**AT+RX2FQ**(%%)  : Rx2 Window Frequency
874 +AT+RX2FQ               : Rx2 Window Frequency
872 872  
873 -(% style="background-color:#dcdcdc" %)**AT+TXP**(%%)  : Transmit Power
876 +AT+TXP           : Transmit Power
874 874  
875 -(% style="background-color:#dcdcdc" %)**AT+ MOD**(%%)  : Set work mode
878 +AT+ MOD                 : Set work mode
876 876  
877 877  
878 -(% style="color:#037691" %)**Information** 
881 +**Information** 
879 879  
880 -(% style="background-color:#dcdcdc" %)**AT+RSSI**(%%)           : RSSI of the Last Received Packet   
883 +AT+RSSI           : RSSI of the Last Received Packet   
881 881  
882 -(% style="background-color:#dcdcdc" %)**AT+SNR**(%%)           : SNR of the Last Received Packet   
885 +AT+SNR           : SNR of the Last Received Packet   
883 883  
884 -(% style="background-color:#dcdcdc" %)**AT+VER**(%%)           : Image Version and Frequency Band       
887 +AT+VER           : Image Version and Frequency Band       
885 885  
886 -(% style="background-color:#dcdcdc" %)**AT+FDR**(%%)           : Factory Data Reset
889 +AT+FDR           : Factory Data Reset
887 887  
888 -(% style="background-color:#dcdcdc" %)**AT+PORT**(%%)  : Application Port    
891 +AT+PORT                  : Application Port    
889 889  
890 -(% style="background-color:#dcdcdc" %)**AT+CHS**(%%)  : Get or Set Frequency (Unit: Hz) for Single Channel Mode
893 +AT+CHS           : Get or Set Frequency (Unit: Hz) for Single Channel Mode
891 891  
892 - (% style="background-color:#dcdcdc" %)**AT+CHE**(%%)  : Get or Set eight channels mode, Only for US915, AU915, CN470
895 + AT+CHE                   : Get or Set eight channels mode, Only for US915, AU915, CN470
893 893  
894 894  
895 -= ​4. FAQ =
896 896  
897 -== 4.1 ​How to change the LoRa Frequency Bands/Region? ==
898 898  
900 +
901 +
902 +
903 +1. ​FAQ
904 +11. ​How to change the LoRa Frequency Bands/Region?
905 +
899 899  You can follow the instructions for [[how to upgrade image>>path:#3ygebqi]].
900 900  When downloading the images, choose the required image file for download. ​
901 901  
902 902  
903 -How to set up LSE01 to work in 8 channel mode By default, the frequency bands US915, AU915, CN470 work in 72 frequencies. Many gateways are 8 channel gateways, and in this case, the OTAA join time and uplink schedule is long and unpredictable while the end node is hopping in 72 frequencies.
904 904  
911 +How to set up LSE01 to work in 8 channel mode
905 905  
913 +By default, the frequency bands US915, AU915, CN470 work in 72 frequencies. Many gateways are 8 channel gateways, and in this case, the OTAA join time and uplink schedule is long and unpredictable while the end node is hopping in 72 frequencies.
914 +
915 +
906 906  You can configure the end node to work in 8 channel mode by using the AT+CHE command. The 500kHz channels are always included for OTAA.
907 907  
908 908  
919 +
909 909  For example, in **US915** band, the frequency table is as below. By default, the end node will use all channels (0~~71) for OTAA Join process. After the OTAA Join, the end node will use these all channels (0~~71) to send uplink packets.
910 910  
911 -[[image:image-20220606154726-3.png]]
912 912  
923 +|CHE|(% colspan="9" %)US915 Uplink Channels(125KHz,4/5,Unit:MHz,CHS=0)
924 +|0|(% colspan="9" %)ENABLE Channel 0-63
925 +|1|902.3|902.5|902.7|902.9|903.1|903.3|903.5|903.7|Channel 0-7
926 +|2|903.9|904.1|904.3|904.5|904.7|904.9|905.1|905.3|Channel 8-15
927 +|3|905.5|905.7|905.9|906.1|906.3|906.5|906.7|906.9|Channel 16-23
928 +|4|907.1|907.3|907.5|907.7|907.9|908.1|908.3|908.5|Channel 24-31
929 +|5|908.7|908.9|909.1|909.3|909.5|909.7|909.9|910.1|Channel 32-39
930 +|6|910.3|910.5|910.7|910.9|911.1|911.3|911.5|911.7|Channel 40-47
931 +|7|911.9|912.1|912.3|912.5|912.7|912.9|913.1|913.3|Channel 48-55
932 +|8|913.5|913.7|913.9|914.1|914.3|914.5|914.7|914.9|Channel 56-63
933 +|(% colspan="10" %)Channels(500KHz,4/5,Unit:MHz,CHS=0)
934 +| |903|904.6|906.2|907.8|909.4|911|912.6|914.2|Channel 64-71
935 +
913 913  When you use the TTN network, the US915 frequency bands use are:
914 914  
915 915  * 903.9 - SF7BW125 to SF10BW125
... ... @@ -924,15 +924,9 @@
924 924  
925 925  Because the end node is now hopping in 72 frequency, it makes it difficult for the devices to Join the TTN network and uplink data. To solve this issue, you can access the device via the AT commands and run:
926 926  
927 -(% class="box infomessage" %)
928 -(((
929 929  **AT+CHE=2**
930 -)))
931 931  
932 -(% class="box infomessage" %)
933 -(((
934 934  **ATZ**
935 -)))
936 936  
937 937  to set the end node to work in 8 channel mode. The device will work in Channel 8-15 & 64-71 for OTAA, and channel 8-15 for Uplink.
938 938  
... ... @@ -939,12 +939,25 @@
939 939  
940 940  The **AU915** band is similar. Below are the AU915 Uplink Channels.
941 941  
942 -[[image:image-20220606154825-4.png]]
943 943  
960 +|CHE|(% colspan="9" %)AU915 Uplink Channels(125KHz,4/5,Unit:MHz,CHS=0)
961 +|0|(% colspan="9" %)ENABLE Channel 0-63
962 +|1|915.2|915.4|915.6|915.8|916|916.2|916.4|916.6|Channel 0-7
963 +|2|916.8|917|917.2|917.4|917.6|917.8|918|918.2|Channel 8-15
964 +|3|918.4|918.6|918.8|919|919.2|919.4|919.6|919.8|Channel 16-23
965 +|4|920|920.2|920.4|920.6|920.8|921|921.2|921.4|Channel 24-31
966 +|5|921.6|921.8|922|922.2|922.4|922.6|922.8|923|Channel 32-39
967 +|6|923.2|923.4|923.6|923.8|924|924.2|924.4|924.6|Channel 40-47
968 +|7|924.8|925|925.2|925.4|925.6|925.8|926|926.2|Channel 48-55
969 +|8|926.4|926.6|926.8|927|927.2|927.4|927.6|927.8|Channel 56-63
970 +|(% colspan="10" %)Channels(500KHz,4/5,Unit:MHz,CHS=0)
971 +| |915.9|917.5|919.1|920.7|922.3|923.9|925.5|927.1|Channel 64-71
944 944  
945 945  
974 +
946 946  = 5. Trouble Shooting =
947 947  
977 +
948 948  == 5.1 ​Why I can’t join TTN in US915 / AU915 bands? ==
949 949  
950 950  It is due to channel mapping. Please see the [[Eight Channel Mode>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]] section above for details.
1654501986557-872.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -767.2 KB
Content
1654502005655-729.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -915.0 KB
Content
1654502050864-459.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -174.6 KB
Content
1654503236291-817.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -685.6 KB
Content
1654503265560-120.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -85.8 KB
Content
image-20220606154726-3.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -35.1 KB
Content
image-20220606154825-4.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -35.3 KB
Content
image-20220606162220-5.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -23.0 KB
Content
Copyright ©2010-2022 Dragino Technology Co., LTD. All rights reserved
Dragino Wiki v2.0