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Last modified by Kilight Cao on 2025/06/05 09:47
From version 139.13
edited by Xiaoling
on 2022/07/28 16:05
Change comment: There is no comment for this version
To version 139.4
edited by Xiaoling
on 2022/07/28 15:15
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -7,6 +7,9 @@
7 7  
8 8  
9 9  
10 +
11 +
12 +
10 10  **Table of Contents：**
11 11  
12 12  {{toc/}}
... ... @@ -18,6 +18,10 @@
18 18  
19 19  
20 20  
24 +
25 +
26 +
27 +
21 21  = 1. Introduction =
22 22  
23 23  == 1.1 What is the DLOS8N ==
... ... @@ -52,22 +52,16 @@
52 52  == 1.2 Specifications ==
53 53  
54 54  
55 -(((
56 56  (% style="color:#037691" %)**Hardware System:**
57 -)))
58 58  
59 59  (((
60 -(((
61 61  (% style="color:#037691" %)**Linux Part:**
62 62  )))
63 -)))
64 64  
65 65  * 400Mhz ar9331 processor
66 66  * 64MB RAM
67 67  * 16MB Flash
68 68  
69 -
70 -
71 71  (% style="color:#037691" %)**Interface:**
72 72  
73 73  * 10M/100M RJ45 Ports x 1
... ... @@ -79,8 +79,6 @@
79 79  * Mini-PCI E connector x 1
80 80  * SX1302 + 2 x SX1250
81 81  
82 -
83 -
84 84  (% style="color:#037691" %)**WiFi Spec:**
85 85  
86 86  * IEEE 802.11 b/g/n
... ... @@ -94,8 +94,6 @@
94 94  ** 11g 54M : -71dbm
95 95  ** 11n 20M : -67dbm
96 96  
97 -
98 -
99 99  (% style="color:#037691" %)**LoRa Spec:**
100 100  
101 101  * Up to -140 dBm sensitivity with SX1250 Tx/Rx front-end
... ... @@ -107,8 +107,6 @@
107 107  * Dynamic data-rate (DDR) adaptation
108 108  * True antenna diversity or simultaneous dual-band operation
109 109  
110 -
111 -
112 112  (% style="color:#037691" %)**Cellular 4G LTE (optional):**
113 113  
114 114  * Quectel: [[**EC25 LTE module**>>url:https://www.quectel.com/product/ec25minipcie.htm]]
... ... @@ -118,8 +118,6 @@
118 118  * Worldwide LTE,UMTS/HSPA+ and GSM/GPRS/EDGE coverage
119 119  * MIMO technology meets demands for data rate and link reliability in modem wireless communication systems
120 120  
121 -
122 -
123 123  (% style="color:#037691" %)**Power over Ethernet:**
124 124  
125 125  * IEEE 802.3af compliant.
... ... @@ -130,10 +130,6 @@
130 130  * Isolation level 4 KVrms.
131 131  * Enhanced surge protection
132 132  
133 -
134 -
135 -
136 -
137 137  == 1.3 Features ==
138 138  
139 139  
... ... @@ -154,10 +154,6 @@
154 154  * Lighting Protection
155 155  * Power Consumption:12v ,300-500mA
156 156  
157 -
158 -
159 -
160 -
161 161  == 1.4 Hardware System Structure ==
162 162  
163 163  
... ... @@ -212,7 +212,6 @@
212 212  The DLOS8N is configured as a WiFi Access Point by default. User can access and configure the DLOS8N after connecting to its WiFi network, or via its Ethernet port.
213 213  
214 214  
215 -
216 216  == 2.1 Find IP address of DLOS8N ==
217 217  
218 218  === 2.1.1 Connect via WiFi ===
... ... @@ -241,9 +241,7 @@
241 241  
242 242  
243 243  (((
244 -(((
245 245  Alternatively, connect the DLOS8N Ethernet port to your router and DLOS8N will obtain an IP address from your router. In the router's management portal, you should be able to find what IP address the router has assigned to the DLOS8N. You can also use this IP to connect.
246 -)))
247 247  
248 248  
249 249  
... ... @@ -262,9 +262,7 @@
262 262  === 2.1.4 Connect via Ethernet with fall back ip ===
263 263  
264 264  
265 -(((
266 266  The WAN port also has a [[fall back ip address>>||anchor="H10.3IconfiguredDLOS8NforWiFiaccessandlostitsIP.Whattodonow3F"]] for access if user doesn't connect to uplink router. Click [[here>>||anchor="H10.3IconfiguredDLOS8NforWiFiaccessandlostitsIP.Whattodonow3F"]] to see how to configure.
267 -)))
268 268  
269 269  
270 270  
... ... @@ -307,16 +307,10 @@
307 307  * **WiFi AP Mode**
308 308  * **Cellular Mode**
309 309  
310 -
311 -
312 -
313 -
314 314  == 3.2 Use WAN port to access Internet ==
315 315  
316 316  
317 -(((
318 318  By default, the DLOS8N is set to use the WAN port to connect to an upstream network. When you connect the DLOS8N's WAN port to an upstream router, DLOS8N will get an IP address from the router and have Internet access via the upstream router. The network status can be checked in the (% style="color:#4f81bd" %)**home page**:
319 -)))
320 320  
321 321  [[image:1657089235431-309.png]]
322 322  
... ... @@ -325,15 +325,11 @@
325 325  == 3.3 Access the Internet as a WiFi Client ==
326 326  
327 327  
328 -(((
329 329  In the WiFi Client Mode, DLOS8N acts as a WiFi client and gets DHCP from an upstream router via WiFi.
330 -)))
331 331  
332 332  (((
333 -(((
334 334  The settings for WiFi Client is under page (% style="color:#4f81bd" %)**System~-~-> WiFi ~-~-> WiFi WAN Client Settings**
335 335  )))
336 -)))
337 337  
338 338  [[image:1657089014716-109.png]]
339 339  
... ... @@ -347,15 +347,11 @@
347 347  == 3.4 Access the Internet via Cellular ==
348 348  
349 349  
350 -(((
351 351  If the DLOS8N support 3G/4G Cellular modem option, When the label on the shell is displayed as Model : DLOS8N-EC25, it indicates that DLOS8 already has EC25 3G/4G modules,user can use it as main internet connection or back up.
352 -)))
353 353  
354 354  (((
355 -(((
356 356  First, release the four screws of DLOS8N, pull out PCB and install SIM card as below:
357 357  )))
358 -)))
359 359  
360 360  [[image:1652420606018-181.png]]
361 361  
... ... @@ -400,9 +400,7 @@
400 400  = 4. Example: Configure as a LoRaWAN gateway =
401 401  
402 402  
403 -(((
404 404  DLOS8N is fully compatible with LoRaWAN protocol. It uses the legacy Semtech Packet forwarder to forward the LoRaWAN packets to server. The structure is as below.
405 -)))
406 406  
407 407  (((
408 408  [[image:image-20220513140429-1.png||height="565" width="824"]]
... ... @@ -417,15 +417,11 @@
417 417  == 4.1 Create a gateway in TTN V3 Server ==
418 418  
419 419  
420 -(((
421 421  (% style="color:blue" %)**Step 1: Get a Unique gateway ID.**
422 -)))
423 423  
424 424  (((
425 -(((
426 426  Every DLOS8N has a unique gateway id. The ID can be found at LoRaWAN page:
427 427  )))
428 -)))
429 429  
430 430  (((
431 431  [[image:1652421929753-168.png||height="403" width="739"]]
... ... @@ -520,9 +520,7 @@
520 520  == 4.3 Configure frequency ==
521 521  
522 522  
523 -(((
524 524  We also need to set the frequency plan in DLOS8N to match the end node we use, so to receive the LoRaWAN packets from the LoRaWAN sensor.
525 -)))
526 526  
527 527  
528 528  [[image:1652422737399-529.png||height="362" width="737"]]
... ... @@ -687,6 +687,7 @@
687 687  * No internet connection.
688 688  * User wants to get data forward in gateway and forward to their server based on MQTT/HTTP, etc. (Combine ABP communication method and [[MQTT forward together>>doc:Main.MQTT Forward Instruction.WebHome]]).
689 689  
648 +
690 690  (((
691 691  Detail of this feature: **[[Communication with ABP End Node>>doc:Main.Communicate with ABP End Node without LoRaWAN Network Server --- LG308.WebHome]]**
692 692  
... ... @@ -802,53 +802,44 @@
802 802  
803 803  [[image:1657090089790-368.png]]
804 804  
805 -
806 806  (((
807 -(% style="color:#037691" %)**__LAN Settings:   __**(%%)When the DLOS8N has the AP enable, LAN settings specify the network info for DLOS8N's own network.
765 +**__LAN Settings:  __**When the DLOS8N has the AP enable, LAN settings specify the network info for DLOS8N's own network.
808 808  )))
809 809  
810 810  (((
811 -(% style="color:#037691" %)__**WAN Settings: **__(%%)Setting for DLOS8N WAN port
769 +__**WAN Settings: **__Setting for DLOS8N WAN port
812 812  )))
813 813  
814 814  (((
815 -(% style="color:#037691" %)__**WiFi Settings:  **__(%%)Setting for DLOS8N WiFi IP when use it as WiFi Client
773 +__**WiFi Settings:  **__Setting for DLOS8N WiFi IP when use it as WiFi Client
816 816  
817 -
818 818  
819 819  )))
820 820  
821 821  === 5.5.4 System ~-~-> WiFi ===
822 822  
823 -
824 824  DLOS8N WiFi Settings.
825 825  
826 826  [[image:1657090107468-438.png]]
827 827  
828 828  
829 -
830 830  === 5.5.5 System ~-~-> Cellular ===
831 831  
832 -
833 833  While use the cellular as Backup WAN, device will use Cellular for internet connection while WAN port or WiFi is not valid and switch back to WAN port or WiFi after they recover.
834 834  
835 835  [[image:1657090204066-944.png]]
836 836  
837 837  
838 -(% style="color:red" %)**Note *: For DLOS8N which doesn't have the cellular module, this page will shows Cellular not detected.**
792 +(% style="color:red" %)Note *: For DLOS8N which doesn't have the cellular module, this page will shows Cellular not detected.
839 839  
840 840  
841 -
842 842  === 5.5.6 System ~-~-> Network Status ===
843 843  
844 -
845 845  [[image:1657090227373-729.png]]
846 846  
847 847  
848 -
849 849  === 5.5.7 System ~-~-> Remote Mgnt & Auto Provision ===
850 850  
851 -
852 852  Auto Provision is the feature for batch configure and remote management. It can be used in below two cases:
853 853  
854 854  [[image:1652429518191-846.png||height="332" width="733"]]
... ... @@ -857,7 +857,6 @@
857 857  
858 858  [[image:1652429537849-154.png||height="339" width="722"]]
859 859  
860 -
861 861  Please see this document for detail:
862 862  
863 863  (((
... ... @@ -870,10 +870,8 @@
870 870  [[image:1657090254561-321.png]]
871 871  
872 872  
873 -
874 874  === 5.5.8 System ~-~-> Firmware Upgrade ===
875 875  
876 -
877 877  We keep improving the DLOS8N Linux side firmware for new features and bug fixes. Below are the links for reference.
878 878  
879 879  * **Latest firmware**: [[LoRa Gateway Firmware>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/LG02-OLG02/Firmware/]],
... ... @@ -896,10 +896,10 @@
896 896  
897 897  [[image:1657090275952-901.png]]
898 898  
899 -Select the required image and click (% style="color:blue" %)**Flash Image.**(%%) The image will be uploaded to the device, and then click (% style="color:blue" %)**Process Update**(%%) to upgrade.
846 +Select the required image and click **Flash Image.** The image will be uploaded to the device, and then click **Process Update** to upgrade.
900 900  
901 901  
902 -(% style="color:red" %)**NOTE**(%%): You normally need to (% style="color:blue" %)**//uncheck//** (%%)the (% style="color:blue" %)**Preserve Settings**(%%) checkbox when doing an upgrade to ensure that there is no conflict between the old settings and the new firmware. The new firmware will start up with its default settings.
849 +(% style="color:red" %)**NOTE**: (% style="color:black" %)You normally need to **//uncheck//** the **Preserve Settings** checkbox when doing an upgrade to ensure that there is no conflict between the old settings and the new firmware. The new firmware will start up with its default settings.
903 903  
904 904  The system will automatically boot into the new firmware after upgrade.
905 905  
... ... @@ -915,21 +915,16 @@
915 915  (% style="color:red" %)**NOTE**(%%) : it is important to transfer the image in the /var directory, otherwise it may exceed the available flash size.
916 916  
917 917  
918 -
919 919  === 5.5.9 System ~-~-> Reboot/Reset ===
920 920  
921 -
922 922  [[image:1657090333476-926.png]]
923 923  
924 924  (((
925 925  
926 -
927 -
928 928  )))
929 929  
930 930  === 5.5.10 System ~-~-> Package Maintain ===
931 931  
932 -
933 933  [[image:1657090378640-879.png]]
934 934  
935 935  [[image:1657090349947-814.png]]
... ... @@ -937,7 +937,6 @@
937 937  Place to show what package has installed and possible to upgrade packages.
938 938  
939 939  
940 -
941 941  == 5.6 LogRead ==
942 942  
943 943  === 5.6.1 LogRead ~-~-> LoRa Log ===
... ... @@ -951,32 +951,25 @@
951 951  
952 952  === 5.6.2 LogRead ~-~-> System Log ===
953 953  
954 -
955 955  Show the system log
956 956  
957 957  [[image:1657090485508-496.png]]
958 958  
959 959  
960 -
961 961  = 6. More features =
962 962  
963 963  == 6.1 More instructions ==
964 964  
965 -
966 966  [[LoRaWAN Gateway Instruction>>doc:Main.WebHome]](LoRaWAN Gateway)
967 967  
968 968  
969 -
970 970  = 7. Linux System =
971 971  
972 -
973 973  The DLOS8N is based on the OpenWrt Linux system. It is open source, and users are free to configure and modify the Linux settings.
974 974  
975 975  
976 -
977 977  == 7.1 SSH Access for Linux console ==
978 978  
979 -
980 980  User can access the Linux console via the SSH protocol. Make sure your PC and the DLOS8N are connected to the same network, then use a SSH tool (such as [[putty>>url:http://www.chiark.greenend.org.uk/~~sgtatham/putty/download.html]] in Windows) to access it.
981 981  
982 982  IP address:  IP address of DLOS8N
... ... @@ -993,14 +993,11 @@
993 993  
994 994  The “(% class="mark" %)**logread -f**(%%)” command can be used to debug how system runs.
995 995  
996 -
997 997  [[image:1657090508015-884.png]]
998 998  
999 999  
1000 -
1001 1001  == 7.2 Edit and Transfer files ==
1002 1002  
1003 -
1004 1004  (((
1005 1005  The DLOS8N supports the (% style="color:green" %)**SCP protocol** (% style="color:black" %)and has a built-in (% style="color:green" %)**SFTP server**. (% style="color:black" %)There are many ways to edit and transfer files using these protocols.
1006 1006  )))
... ... @@ -1011,8 +1011,6 @@
1011 1011  
1012 1012  (((
1013 1013  After establishing access via WinSCP to the device, you can use an FTP style window to drag / drop files to the DLOS8N, or edit the files directly in the windows.
1014 -
1015 -
1016 1016  )))
1017 1017  
1018 1018  (((
... ... @@ -1022,10 +1022,8 @@
1022 1022  [[image:1652431650755-450.png]]
1023 1023  
1024 1024  
1025 -
1026 1026  == 7.3 File System ==
1027 1027  
1028 -
1029 1029  (((
1030 1030  The DLOS8N has a 16MB flash and a 64MB RAM. The /var and /tmp directories are in the RAM, so contents stored in /tmp and /var will be erased after rebooting the device. Other directories are in the flash and will remain after reboot.
1031 1031  )))
... ... @@ -1039,10 +1039,8 @@
1039 1039  )))
1040 1040  
1041 1041  
1042 -
1043 1043  == 7.4 Package maintenance system ==
1044 1044  
1045 -
1046 1046  DLOS8N uses the OpenWrt [[**OPKG package maintenance system**>>https://oldwiki.archive.openwrt.org/doc/techref/opkg]]. There are more than 3000+ packages available in our package server for users to install for their applications. For example, if you want to add the **//iperf //** tool, you can install the related packages and configure DLOS8N to use **//iperf //**.
1047 1047  
1048 1048  (((
... ... @@ -1095,7 +1095,6 @@
1095 1095  (((
1096 1096  (% style="background-color:#dcdcdc" %)//Configuring iperf.//
1097 1097  
1098 -
1099 1099  
1100 1100  )))
1101 1101  
... ... @@ -1102,12 +1102,10 @@
1102 1102  = 8. Upgrade Linux Firmware =
1103 1103  
1104 1104  
1105 -
1106 1106  = 9. FAQ =
1107 1107  
1108 1108  == 9.1 How can I configure for a customized frequency band? ==
1109 1109  
1110 -
1111 1111  (((
1112 1112  See below link for how to customize frequency band: **[[How to customized LoRaWAN frequency band>>doc:Main.How to customized LoRaWAN frequency band.WebHome]]**
1113 1113  )))
... ... @@ -1114,20 +1114,15 @@
1114 1114  
1115 1115  (((
1116 1116  
1117 -
1118 -
1119 1119  )))
1120 1120  
1121 1121  == 9.2 Can I connect DLOS8N to LORIOT? ==
1122 1122  
1123 -
1124 1124  Yes, the set up instruction is here: **[[Notes for LORIOT>>doc:Main.Notes for LORIOT.WebHome]]**
1125 1125  
1126 1126  
1127 -
1128 1128  == 9.3 Can I make my own firmware for the gateway, where can I find the source code? ==
1129 1129  
1130 -
1131 1131  (((
1132 1132  Yes, You can make your own firmware for the DLOS8N for branding purposes or to add customized applications.
1133 1133  )))
... ... @@ -1137,19 +1137,15 @@
1137 1137  )))
1138 1138  
1139 1139  
1140 -
1141 1141  == 9.4 Can I use 868Mhz version for 915Mhz bands? ==
1142 1142  
1143 -
1144 1144  It is possible but the distance will be very short, you can select US915 frequency band in 868Mhz version hardware. It will work but you will see the performance is greatly decreased because the 868Mhz version has an RF filter for band 863~~870Mhz, all other frequencies will have high attenuation.
1145 1145  
1146 1146  
1147 -
1148 1148  = 10. Trouble Shooting =
1149 1149  
1150 1150  == 10.1 I get kernel error when install new package, how to fix? ==
1151 1151  
1152 -
1153 1153  In some cases, when installing a package with **//opkg//**, it will generate a kernel error such as below due to a mismatch I the kernel ID:
1154 1154  
1155 1155  (% style="background-color:yellow" %)root@dragino-16c538:~~# opkg install kmod-dragino2-si3217x_3.10.49+0.2-1_ar71xx.ipk
... ... @@ -1171,10 +1171,8 @@
1171 1171  (% style="background-color:yellow" %)Opkg install kmod-dragino2-si3217x_3.10.49+0.2-1_ar71xx.ipk –force-depends
1172 1172  
1173 1173  
1174 -
1175 1175  == 10.2 How to recover the DLOS8N if the firmware crashes ==
1176 1176  
1177 -
1178 1178  (((
1179 1179  Please follow this instruction to recover your gateway:  **[[Recover Gateway>>doc:Main.How to Recover Gateway if can't access it.WebHome]]**
1180 1180  )))
... ... @@ -1181,27 +1181,21 @@
1181 1181  
1182 1182  (((
1183 1183  
1184 -
1185 -
1186 1186  )))
1187 1187  
1188 1188  == 10.3 I configured DLOS8N for WiFi access and lost its IP. What to do now? ==
1189 1189  
1190 -
1191 1191  [[image:1657090540821-317.png]]
1192 1192  
1193 -
1194 1194  (((
1195 1195  The DLOS8N has a fall-back IP address on its WAN port. This IP is always enabled so you can use the fall-back IP to access DLOS8N no matter what the WiFi IP is. The fall back IP is useful for connecting and debug the unit.
1196 -
1197 -
1198 1198  )))
1199 1199  
1200 -(% style="color:red" %)**Note: fallback IP can be disabled in the WAN and DHCP page.**
1105 +(% style="color:red" %)Note: fallback IP can be disabled in the WAN and DHCP page.
1201 1201  
1202 1202  
1203 1203  (((
1204 -(% style="color:blue" %)**Steps to connect via fall back IP:**
1109 +Steps to connect via fall back IP:
1205 1205  )))
1206 1206  
1207 1207  (((
... ... @@ -1213,35 +1213,27 @@
1213 1213  )))
1214 1214  
1215 1215  (((
1216 -
1217 -
1218 1218  As below photo:
1219 1219  )))
1220 1220  
1221 1221  [[image:1652435256286-879.png]]
1222 1222  
1223 -
1224 1224  3. In the PC, use IP address 172.31.255.254 to access the DLOS8N via Web or Console.
1225 1225  
1226 -
1227 1227  Please note the latest firmware uses port 8000 for http and 2222 for ssh access.
1228 1228  
1229 1229  
1230 -
1231 1231  = 11. Order Info =
1232 1232  
1133 +(% style="color:#4f81bd" %) **//PART: DLOS8N-XXX-YYY//: **
1233 1233  
1234 - **//PART: (% style="color:blue" %)DLOS8N-XXX-YYY//(%%)**
1135 +(% style="color:#4f81bd" %) **//XXX: Frequency Band//**
1235 1235  
1236 -**//XXX: Frequency Band//**
1137 +* (% style="color:red" %)** 868**(% style="color:black" %) : valid frequency: 863Mhz ~~ 870Mhz. for bands EU868, RU864, IN865 or KZ865.
1138 +* (% style="color:red" %)** 915**(% style="color:black" %):  valid frequency: 902Mhz ~~ 928Mhz. for bands US915, AU915, AS923 or KR920
1237 1237  
1238 -* (% style="color:red" %)** 868**(%%) : valid frequency: 863Mhz ~~ 870Mhz. for bands EU868, RU864, IN865 or KZ865.
1239 -* (% style="color:red" %)** 915**(%%):  valid frequency: 902Mhz ~~ 928Mhz. for bands US915, AU915, AS923 or KR920
1140 +(% style="color:#4f81bd" %) **//YYY: 4G Cellular Option//**
1240 1240  
1241 -
1242 -
1243 -**//YYY: 4G Cellular Option//**
1244 -
1245 1245  * (% style="color:red" %)** E**(% style="color:black" %):  EMEA, Korea, Thailand, India.
1246 1246  * (% style="color:red" %)** A**(% style="color:black" %):  North America/ Rogers/AT&T/T-Mobile.
1247 1247  * (% style="color:red" %)** AU**(% style="color:black" %): Latin America, New Zeland, Taiwan
... ... @@ -1253,7 +1253,6 @@
1253 1253  
1254 1254  = 12. Packing Info =
1255 1255  
1256 -
1257 1257  (((
1258 1258  **Package Includes**:
1259 1259  )))
... ... @@ -1262,8 +1262,6 @@
1262 1262  * Stick Antenna for LoRa RF part. Frequency is one of 470 or 868 or 915Mhz depends the model ordered
1263 1263  * Packaging with environmental protection paper box
1264 1264  
1265 -
1266 -
1267 1267  (((
1268 1268  **Dimension and weight**:
1269 1269  )))
... ... @@ -1273,14 +1273,9 @@
1273 1273  * Package Size: 49 x 19.5 x x 19Package Size: 4912 cm
1274 1274  * Weight: 2.5kg
1275 1275  
1276 -
1277 -
1278 -
1279 -
1280 1280  = 13. Support =
1281 1281  
1282 -
1283 1283  * Try to see if your questions already answered in the [[wiki>>doc:Main.WebHome]].
1284 1284  * Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8.
1285 1285  Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before mentioned schedule.
1286 -* Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to:  [[support@dragino.com>>url:file:///C:/Users/11315/Documents/D:/Projects/LoRa%20Product%20Line/LG308%20Picocell%20Gateway/LG308/LG308%20%25E8%25AF%25B4%25E6%2598%258E%25E4%25B9%25A6/support@dragino.com]]
1175 +* Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to:[[support@dragino.com>>url:file:///C:/Users/11315/Documents/D:/Projects/LoRa%20Product%20Line/LG308%20Picocell%20Gateway/LG308/LG308%20%25E8%25AF%25B4%25E6%2598%258E%25E4%25B9%25A6/support@dragino.com]]