Last modified by Saxer Lin on 2025/04/15 17:24
<
From version < 66.29 >
edited by Xiaoling
on 2022/05/24 14:12
To version < 68.19 >
edited by Xiaoling
on 2022/05/25 15:28
>
Change comment: There is no comment for this version

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... ... @@ -41,6 +41,8 @@
41 41  
42 42  (((
43 43  [[image:1653295757274-912.png]]
44 +
45 +
44 44  )))
45 45  
46 46  == 1.2  Specifications ==
... ... @@ -151,6 +151,8 @@
151 151  )))
152 152  * (((
153 153  Packet engine up to 256 bytes with CRC.
156 +
157 +
154 154  )))
155 155  
156 156  == 1.3 Features ==
... ... @@ -163,6 +163,7 @@
163 163  * Firmware upgradable via program port
164 164  * Counting
165 165  
170 +
166 166  == 1.4  Applications ==
167 167  
168 168  * Smart Buildings & Home Automation
... ... @@ -172,6 +172,7 @@
172 172  * Smart Cities
173 173  * Smart Factory
174 174  
180 +
175 175  == 1.5 Hardware Variants ==
176 176  
177 177  (% border="1" style="background-color:#f7faff; width:500px" %)
... ... @@ -185,6 +185,8 @@
185 185  * 1 x Counting Port
186 186  )))
187 187  
194 +
195 +
188 188  = 2. Power ON Device =
189 189  
190 190  The LT controller can be powered by 7 ~~ 24V DC power source. Connect VIN to Power Input V+ and GND to power input V- to power the LT controller.
... ... @@ -195,6 +195,7 @@
195 195  
196 196  [[image:1653297104069-180.png]]
197 197  
206 +
198 198  = 3. Operation Mode =
199 199  
200 200  == 3.1 How it works? ==
... ... @@ -204,7 +204,9 @@
204 204  )))
205 205  
206 206  (((
207 -In case user can’t set the OTAA keys in the network server and has to use the existing keys from server. User can [[use AT Command>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H4.UseATCommand]] to set the keys in the devices.
216 +In case user can’t set the OTAA keys in the network server and has to use the existing keys from server. User can [[use AT Command>>||anchor="H4.UseATCommand"]] to set the keys in the devices.
217 +
218 +
208 208  )))
209 209  
210 210  == 3.2 Example to join LoRaWAN network ==
... ... @@ -235,10 +235,12 @@
235 235  
236 236  [[image:1653297955910-247.png||height="321" width="716"]]
237 237  
249 +
238 238  Add APP KEY and DEV EUI
239 239  
240 240  [[image:1653298023685-319.png]]
241 241  
254 +
242 242  (((
243 243  **Step 2**: Power on LT and it will auto join to the TTN network. After join success, it will start to upload message to TTN and user can see in the panel.
244 244  )))
... ... @@ -245,6 +245,7 @@
245 245  
246 246  [[image:1653298044601-602.png||height="405" width="709"]]
247 247  
261 +
248 248  == 3.3 Uplink Payload ==
249 249  
250 250  There are five working modes + one interrupt mode on LT for different type application:
... ... @@ -256,6 +256,7 @@
256 256  * **MOD5**: Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
257 257  * **ADDMOD6**: Trigger Mode, Optional, used together with MOD1 ~~ MOD5
258 258  
273 +
259 259  === 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
260 260  
261 261  The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default.
... ... @@ -291,6 +291,7 @@
291 291  * [1] RO1 relay channel is close and the RO1 LED is ON.
292 292  * [0] RO2 relay channel is open and RO2 LED is OFF;
293 293  
309 +
294 294  **LT22222-L:**
295 295  
296 296  * [1] DI2 channel is high input and DI2 LED is ON;
... ... @@ -306,6 +306,7 @@
306 306  ** DO1 is high in case there is load between DO1 and V+.
307 307  ** DO1 LED is off in both case
308 308  
325 +
309 309  === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
310 310  
311 311  **For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
... ... @@ -398,6 +398,7 @@
398 398  )))
399 399  )))
400 400  
418 +
401 401  === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
402 402  
403 403  **LT22222-L**: This mode the DI1 is used as a counting pin.
... ... @@ -437,7 +437,9 @@
437 437  )))
438 438  
439 439  (((
440 -Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.2AT2BMOD3D22C28DoubleDICounting29]].
458 +Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
459 +
460 +
441 441  )))
442 442  
443 443  === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
... ... @@ -485,7 +485,7 @@
485 485  )))
486 486  
487 487  (((
488 -Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.2AT2BMOD3D22C28DoubleDICounting29]].
508 +Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
489 489  )))
490 490  
491 491  (((
... ... @@ -520,6 +520,7 @@
520 520  )))
521 521  )))
522 522  
543 +
523 523  === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
524 524  
525 525  **LT22222-L**: This mode the DI1 is used as a counting pin.
... ... @@ -559,7 +559,9 @@
559 559  )))
560 560  
561 561  (((
562 -Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.2AT2BMOD3D22C28DoubleDICounting29]].
583 +Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
584 +
585 +
563 563  )))
564 564  
565 565  === 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
... ... @@ -682,10 +682,13 @@
682 682  
683 683  When device got this command, it will send the MOD6 payload.
684 684  
708 +
685 685  === 3.3.7 Payload Decoder ===
686 686  
687 687  (((
688 688  **Decoder for TTN/loraserver/ChirpStack**: [[http:~~/~~/www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/Payload_decoder/>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/Payload_decoder/]]
713 +
714 +
689 689  )))
690 690  
691 691  == 3.4 ​Configure LT via AT or Downlink ==
... ... @@ -700,10 +700,12 @@
700 700  
701 701  * (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
702 702  
729 +
703 703  === 3.4.1 Common Commands ===
704 704  
705 -They should be available for each of Dragino Sensors, such as: change uplink interval, reset device. For firmware v1.5.4, user can find what common commands it supports: [[End Device AT Commands and Downlink Command>>http://8.211.40.43:8080/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/]]
732 +They should be available for each of Dragino Sensors, such as: change uplink interval, reset device. For firmware v1.5.4, user can find what common commands it supports: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
706 706  
734 +
707 707  === 3.4.2 Sensor related commands ===
708 708  
709 709  ==== 3.4.2.1 Set Transmit Interval ====
... ... @@ -726,6 +726,7 @@
726 726  **0x01 aa bb cc     ~/~/ Same as AT+TDC=0x(aa bb cc)**
727 727  )))
728 728  
757 +
729 729  ==== 3.4.2.2 Set Work Mode (AT+MOD) ====
730 730  
731 731  Set work mode.
... ... @@ -746,6 +746,7 @@
746 746  **0x0A aa     ~/~/ Same as AT+MOD=aa**
747 747  )))
748 748  
778 +
749 749  ==== 3.4.2.3 Poll an uplink ====
750 750  
751 751  * AT Command:
... ... @@ -761,6 +761,7 @@
761 761  
762 762  **Example**: 0x08FF, ask device to send an Uplink
763 763  
794 +
764 764  ==== 3.4.2.4 Enable Trigger Mode ====
765 765  
766 766  Use of trigger mode, please check [[ADDMOD6>>path:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29]]
... ... @@ -783,6 +783,7 @@
783 783  **0x0A 06 aa     ~/~/ Same as AT+ADDMOD6=aa,**
784 784  )))
785 785  
817 +
786 786  ==== 3.4.2.5 Poll trigger settings ====
787 787  
788 788  Poll trigger settings,
... ... @@ -798,6 +798,7 @@
798 798  **0xAB 06  ~/~/ Poll trigger settings, device will uplink trigger settings once receive this command**
799 799  )))
800 800  
833 +
801 801  ==== 3.4.2.6 Enable / Disable DI1/DI2/DI3 as trigger ====
802 802  
803 803  Enable Disable DI1/DI2/DI2 as trigger,
... ... @@ -820,6 +820,7 @@
820 820  **0xAA 02 aa bb  ~/~/ Same as AT+DTRI=aa,bb**
821 821  )))
822 822  
856 +
823 823  ==== 3.4.2.7 Trigger1 – Set DI1 or DI3 as trigger ====
824 824  
825 825  Set DI1 or DI3(for LT-33222-L) trigger.
... ... @@ -846,6 +846,7 @@
846 846  **0x09 01 aa bb cc ~/~/ same as AT+TRIG1=aa,0x(bb cc)**
847 847  )))
848 848  
883 +
849 849  ==== 3.4.2.8 Trigger2 – Set DI2 as trigger ====
850 850  
851 851  Set DI2 trigger.
... ... @@ -872,6 +872,7 @@
872 872  **0x09 02 aa bb cc ~/~/ same as AT+TRIG1=aa,0x(bb cc)**
873 873  )))
874 874  
910 +
875 875  ==== 3.4.2.9 Trigger – Set AC (current) as trigger ====
876 876  
877 877  Set current trigger , base on AC port. See [[trigger mode>>path:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29]]
... ... @@ -890,6 +890,7 @@
890 890  **0x AA 01 aa bb cc dd ee ff gg hh ~/~/ same as AT+ACLIM See [[trigger mode>>url:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29]]**
891 891  )))
892 892  
929 +
893 893  ==== 3.4.2.10 Trigger – Set AV (voltage) as trigger ====
894 894  
895 895  Set current trigger , base on AV port. See [[trigger mode>>url:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29]]
... ... @@ -908,6 +908,7 @@
908 908  **0x AA 00 aa bb cc dd ee ff gg hh ~/~/ same as AT+AVLIM See [[trigger mode>>url:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29]] **
909 909  )))
910 910  
948 +
911 911  ==== 3.4.2.11 Trigger – Set minimum interval ====
912 912  
913 913  Set AV and AC trigger minimum interval, system won’t response to the second trigger within this set time after the first trigger.
... ... @@ -926,6 +926,7 @@
926 926  **0x AC aa bb ~/~/ same as AT+ATDC=0x(aa bb)   . Unit (min)**
927 927  )))
928 928  
967 +
929 929  ==== 3.4.2.12 DO ~-~- Control Digital Output DO1/DO2/DO3 ====
930 930  
931 931  * AT Command:
... ... @@ -1116,6 +1116,7 @@
1116 1116  **0xA5 aa bb cc   ~/~/ Same as AT+VOLMAX=(aa bb),cc**
1117 1117  )))
1118 1118  
1158 +
1119 1119  ==== 3.4.2.17 Counting ~-~- Pre-configure the Count Number ====
1120 1120  
1121 1121  * AT Command:
... ... @@ -1140,6 +1140,7 @@
1140 1140  **0x A8 aa bb cc dd ee     ~/~/ same as AT+SETCNT=aa,(bb cc dd ee)**
1141 1141  )))
1142 1142  
1183 +
1143 1143  ==== 3.4.2.18 Counting ~-~- Clear Counting ====
1144 1144  
1145 1145  Clear counting for counting mode
... ... @@ -1158,6 +1158,7 @@
1158 1158  **0x A6 01     ~/~/ clear all counting,**
1159 1159  )))
1160 1160  
1202 +
1161 1161  ==== 3.4.2.19 Counting ~-~- Change counting mode save time ====
1162 1162  
1163 1163  * AT Command:
... ... @@ -1174,15 +1174,23 @@
1174 1174  **0x A7 aa bb cc     ~/~/ same as AT+COUTIME =aa bb cc,**
1175 1175  )))
1176 1176  
1219 +(((
1177 1177  range: aa bb cc:0 to 16777215,  (unit:second)
1178 1178  
1222 +
1223 +)))
1224 +
1179 1179  == 3.5 Integrate with Mydevice ==
1180 1180  
1181 1181  Mydevices provides a human friendly interface to show the sensor data, once we have data in TTN, we can use Mydevices to connect to TTN and see the data in Mydevices. Below are the steps:
1182 1182  
1229 +(((
1183 1183  **Step 1**: Be sure that your device is programmed and properly connected to the network at this time.
1231 +)))
1184 1184  
1233 +(((
1185 1185  **Step 2**: To configure the Application to forward data to Mydevices you will need to add integration. To add the Mydevices integration, perform the following steps:
1235 +)))
1186 1186  
1187 1187  [[image:1653356737703-362.png||height="232" width="732"]]
1188 1188  
... ... @@ -1198,6 +1198,7 @@
1198 1198  
1199 1199  [[image:1653356838789-523.png||height="337" width="740"]]
1200 1200  
1251 +
1201 1201  After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.
1202 1202  
1203 1203  [[image:image-20220524094909-1.png||height="335" width="729"]]
... ... @@ -1210,6 +1210,7 @@
1210 1210  
1211 1211  [[image:image-20220524094909-5.png||height="341" width="734"]]
1212 1212  
1264 +
1213 1213  == 3.6 Interface Detail ==
1214 1214  
1215 1215  === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
... ... @@ -1218,6 +1218,7 @@
1218 1218  
1219 1219  [[image:1653356991268-289.png]]
1220 1220  
1273 +
1221 1221  === 3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) ===
1222 1222  
1223 1223  (((
... ... @@ -1278,6 +1278,7 @@
1278 1278  
1279 1279  If sensor output is 220v, the (% id="cke_bm_243359S" style="display:none" %)[[image:image-20220524095628-8.png]](%%) = DI1+ / 51K.  = 4.3mA , So the LT-22222-L will be able to detect this high active signal safely.
1280 1280  
1334 +
1281 1281  === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1282 1282  
1283 1283  NPN output: GND or Float. Max voltage can apply to output pin is 36v.
... ... @@ -1284,6 +1284,7 @@
1284 1284  
1285 1285  [[image:1653357531600-905.png]]
1286 1286  
1341 +
1287 1287  === 3.6.4 Analog Input Interface ===
1288 1288  
1289 1289  The analog input interface is as below. The LT will measure the IN2 voltage so to calculate the current pass the Load. The formula is:
... ... @@ -1311,6 +1311,7 @@
1311 1311  
1312 1312  [[image:1653357648330-671.png||height="155" width="733"]]
1313 1313  
1369 +
1314 1314  === 3.6.5 Relay Output ===
1315 1315  
1316 1316  (((
... ... @@ -1321,10 +1321,12 @@
1321 1321  
1322 1322  [[image:image-20220524100215-10.png||height="382" width="723"]]
1323 1323  
1380 +
1324 1324  == 3.7 LEDs Indicators ==
1325 1325  
1326 1326  [[image:image-20220524100748-11.png]]
1327 1327  
1385 +
1328 1328  = 4. Use AT Command =
1329 1329  
1330 1330  == 4.1 Access AT Command ==
... ... @@ -1339,7 +1339,9 @@
1339 1339  
1340 1340  [[image:1653358355238-883.png]]
1341 1341  
1400 +(((
1342 1342  More detail AT Command manual can be found at [[AT Command Manual>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]]
1402 +)))
1343 1343  
1344 1344  (((
1345 1345  AT+<CMD>?        : Help on <CMD>
... ... @@ -1523,6 +1523,8 @@
1523 1523  
1524 1524  (((
1525 1525  AT+CFG: Print all settings
1586 +
1587 +
1526 1526  )))
1527 1527  
1528 1528  == 4.2 Common AT Command Sequence ==
... ... @@ -1564,6 +1564,8 @@
1564 1564  
1565 1565  (((
1566 1566  (% style="background-color:#dcdcdc" %)ATZ
1629 +
1630 +
1567 1567  )))
1568 1568  
1569 1569  === 4.2.2 Single-channel ABP mode (Use with LG01/LG02) ===
... ... @@ -1645,6 +1645,7 @@
1645 1645  (% style="background-color:#dcdcdc" %)AT+CLASS=A
1646 1646  ATZ
1647 1647  
1712 +
1648 1648  = 5. FAQ =
1649 1649  
1650 1650  == 5.1 How to upgrade the image? ==
... ... @@ -1675,6 +1675,7 @@
1675 1675  
1676 1676  [[image:1653360054704-518.png||height="186" width="745"]]
1677 1677  
1743 +
1678 1678  (((
1679 1679  (((
1680 1680  == 5.2 How to change the LoRa Frequency Bands/Region? ==
... ... @@ -1682,7 +1682,9 @@
1682 1682  )))
1683 1683  
1684 1684  (((
1685 -User can follow the introduction for [[how to upgrade image>>path:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H5.1Howtoupgradetheimage3F]]. When download the images, choose the required image file for download.
1751 +User can follow the introduction for [[how to upgrade image>>||anchor="H5.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
1752 +
1753 +
1686 1686  )))
1687 1687  
1688 1688  (((
... ... @@ -1736,14 +1736,17 @@
1736 1736  
1737 1737  [[image:1653360498588-932.png||height="485" width="726"]]
1738 1738  
1807 +
1739 1739  == 5.4 Can I see counting event in Serial? ==
1740 1740  
1741 1741  (((
1742 1742  User can run AT+DEBUG command to see the counting event in serial. If firmware too old and doesn’t support AT+DEBUG. User can update to latest firmware first.
1812 +
1813 +
1743 1743  )))
1744 1744  
1745 1745  (((
1746 -= 6. Trouble Shooting =
1817 += 6. Trouble Shooting =
1747 1747  )))
1748 1748  
1749 1749  (((
... ... @@ -1753,13 +1753,11 @@
1753 1753  )))
1754 1754  
1755 1755  (((
1756 -Please see this link for how to debug:
1827 +Please see this link for how to debug:
1757 1757  
1758 -[[http:~~/~~/8.211.40.43:8080/xwiki/bin/view/Main/LoRaWAN%20Communication%20Debug/>>http://8.211.40.43:8080/xwiki/bin/view/Main/LoRaWAN%20Communication%20Debug/]]
1759 -)))
1829 +[[http:~~/~~/wiki1.dragino.com/xwiki/bin/view/Main/LoRaWAN%20Communication%20Debug/#H5.1Howitwork>>http://wiki1.dragino.com/xwiki/bin/view/Main/LoRaWAN%20Communication%20Debug/#H5.1Howitwork]]
1760 1760  
1761 -(((
1762 -[[http:~~/~~/wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#How_it_work>>url:http://wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#How_it_work]]
1831 +
1763 1763  )))
1764 1764  
1765 1765  (((
... ... @@ -1768,10 +1768,12 @@
1768 1768  
1769 1769  (((
1770 1770  See this link for trouble shooting:
1840 +
1841 +[[http:~~/~~/wiki1.dragino.com/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/>>http://wiki1.dragino.com/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/]]
1771 1771  )))
1772 1772  
1773 1773  (((
1774 -[[http:~~/~~/wiki.dragino.com/index.php?title=Firmware_Upgrade_Trouble_Shooting#UART_upgrade_trouble_shooting>>url:http://wiki.dragino.com/index.php?title=Firmware_Upgrade_Trouble_Shooting#UART_upgrade_trouble_shooting]]
1845 +
1775 1775  )))
1776 1776  
1777 1777  (((
... ... @@ -1780,10 +1780,12 @@
1780 1780  
1781 1781  (((
1782 1782  It might be about the channels mapping. Please see this link for detail:
1854 +
1855 +[[http:~~/~~/wiki1.dragino.com/xwiki/bin/view/Main/LoRaWAN%20Communication%20Debug/#H2.NoticeofUS9152FCN4702FAU915Frequencyband>>http://wiki1.dragino.com/xwiki/bin/view/Main/LoRaWAN%20Communication%20Debug/#H2.NoticeofUS9152FCN4702FAU915Frequencyband]]
1783 1783  )))
1784 1784  
1785 1785  (((
1786 -[[http:~~/~~/wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#Notice_of_US915.2FCN470.2FAU915_Frequency_band>>url:http://wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#Notice_of_US915.2FCN470.2FAU915_Frequency_band]]
1859 +
1787 1787  )))
1788 1788  
1789 1789  (((
... ... @@ -1853,6 +1853,8 @@
1853 1853  (((
1854 1854  * (((
1855 1855  (% style="color:#4f81bd" %)**CN779**(%%): LT with frequency bands CN779
1929 +
1930 +
1856 1856  )))
1857 1857  
1858 1858  = 8. Packing Info =
... ... @@ -1885,6 +1885,8 @@
1885 1885  * Device Weight: 105g
1886 1886  * Package Size / pcs : 14.5 x 8 x 5 cm
1887 1887  * Weight / pcs : 170g
1963 +
1964 +
1888 1888  )))
1889 1889  )))
1890 1890  
... ... @@ -1906,6 +1906,8 @@
1906 1906  (((
1907 1907  (((
1908 1908   [[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]]
1986 +
1987 +
1909 1909  )))
1910 1910  
1911 1911  (((

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