Last modified by Saxer Lin on 2025/04/15 17:24
<
From version < 118.1 >
edited by Ellie Zhang
on 2023/05/09 09:04
To version < 109.1 >
edited by Edwin Chen
on 2022/11/19 11:32
>
Change comment: There is no comment for this version

Summary

Details

Page properties
Author
... ... @@ -1,1 +1,1 @@
1 -XWiki.Ellie
1 +XWiki.Edwin
Content
... ... @@ -15,6 +15,7 @@
15 15  
16 16  = 1.Introduction =
17 17  
18 +
18 18  == 1.1 What is LT Series I/O Controller ==
19 19  
20 20  (((
... ... @@ -26,7 +26,7 @@
26 26  )))
27 27  
28 28  (((
29 -The LT I/O Controllers allows the user to send data and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, building automation, and so on.
30 +The LT I/O Controllers allows the user to send data and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, smartphone detection, building automation, and so on.
30 30  )))
31 31  
32 32  (((
... ... @@ -53,6 +53,7 @@
53 53  
54 54  )))
55 55  
57 +
56 56  == 1.2  Specifications ==
57 57  
58 58  (((
... ... @@ -169,6 +169,7 @@
169 169  Packet engine up to 256 bytes with CRC.
170 170  
171 171  
174 +
172 172  
173 173  )))
174 174  
... ... @@ -176,45 +176,29 @@
176 176  
177 177  
178 178  * LoRaWAN Class A & Class C protocol
179 -
180 180  * Optional Customized LoRa Protocol
181 -
182 182  * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/RU864/IN865/MA869
183 -
184 184  * AT Commands to change parameters
185 -
186 186  * Remote configure parameters via LoRa Downlink
187 -
188 188  * Firmware upgradable via program port
189 -
190 190  * Counting
191 191  
192 -
193 193  == 1.4  Applications ==
194 194  
195 195  
196 196  * Smart Buildings & Home Automation
197 -
198 198  * Logistics and Supply Chain Management
199 -
200 200  * Smart Metering
201 -
202 202  * Smart Agriculture
203 -
204 204  * Smart Cities
205 -
206 206  * Smart Factory
207 207  
208 -
209 209  == 1.5 Hardware Variants ==
210 210  
211 211  
212 -(% border="1" style="background-color:#f2f2f2; width:500px" %)
213 -|(% style="background-color:#d9e2f3; color:#0070c0; width:103px" %)**Model**|(% style="background-color:#d9e2f3; color:#0070c0; width:131px" %)**Photo**|(% style="background-color:#d9e2f3; color:#0070c0; width:334px" %)**Description**
214 -|(% style="width:103px" %)**LT22222-L**|(% style="width:131px" %)(((
215 -(% style="text-align:center" %)
216 -[[image:image-20230424115112-1.png||height="106" width="58"]]
217 -)))|(% style="width:334px" %)(((
202 +(% border="1" style="background-color:#f7faff; width:500px" %)
203 +|(% style="width:103px" %)**Model**|(% style="width:131px" %)**Photo**|(% style="width:334px" %)**Description**
204 +|(% style="width:103px" %)**LT22222-L**|(% style="width:131px" %)[[image:1653296302983-697.png]]|(% style="width:334px" %)(((
218 218  * 2 x Digital Input (Bi-direction)
219 219  * 2 x Digital Output
220 220  * 2 x Relay Output (5A@250VAC / 30VDC)
... ... @@ -223,7 +223,6 @@
223 223  * 1 x Counting Port
224 224  )))
225 225  
226 -
227 227  = 2. Power ON Device =
228 228  
229 229  
... ... @@ -240,8 +240,10 @@
240 240  [[image:1653297104069-180.png]]
241 241  
242 242  
229 +
243 243  = 3. Operation Mode =
244 244  
232 +
245 245  == 3.1 How it works? ==
246 246  
247 247  
... ... @@ -254,6 +254,7 @@
254 254  )))
255 255  
256 256  
245 +
257 257  == 3.2 Example to join LoRaWAN network ==
258 258  
259 259  
... ... @@ -280,7 +280,7 @@
280 280  Each LT is shipped with a sticker with the default device EUI as below:
281 281  )))
282 282  
283 -[[image:image-20230425173427-2.png]]
272 +[[image:1653297924498-393.png]]
284 284  
285 285  
286 286  Input these keys in the LoRaWAN Server portal. Below is TTN screen shot:
... ... @@ -305,6 +305,7 @@
305 305  [[image:1653298044601-602.png||height="405" width="709"]]
306 306  
307 307  
297 +
308 308  == 3.3 Uplink Payload ==
309 309  
310 310  
... ... @@ -317,7 +317,6 @@
317 317  * (% style="color:blue" %)**MOD5**(%%): Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
318 318  * (% style="color:blue" %)**ADDMOD6**(%%): Trigger Mode, Optional, used together with MOD1 ~~ MOD5
319 319  
320 -
321 321  === 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
322 322  
323 323  
... ... @@ -374,7 +374,6 @@
374 374  ** DO1 is high in case there is load between DO1 and V+.
375 375  ** DO1 LED is off in both case
376 376  
377 -
378 378  === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
379 379  
380 380  
... ... @@ -448,6 +448,7 @@
448 448  )))
449 449  
450 450  
439 +
451 451  === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
452 452  
453 453  
... ... @@ -494,6 +494,7 @@
494 494  )))
495 495  
496 496  
486 +
497 497  === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
498 498  
499 499  
... ... @@ -562,6 +562,7 @@
562 562  )))
563 563  
564 564  
555 +
565 565  === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
566 566  
567 567  
... ... @@ -609,6 +609,7 @@
609 609  )))
610 610  
611 611  
603 +
612 612  === 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
613 613  
614 614  
... ... @@ -663,6 +663,7 @@
663 663  AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
664 664  
665 665  
658 +
666 666  (% style="color:#037691" %)**Downlink Command to set Trigger Condition:**
667 667  
668 668  Type Code: 0xAA. Downlink command same as AT Command **AT+AVLIM, AT+ACLIM**
... ... @@ -723,6 +723,7 @@
723 723  10000000: Means this packet is trigger by AC1_LOW. Means voltage too low.
724 724  
725 725  
719 +
726 726  (% style="color:#4f81bd" %)**TRI_DI FLAG+STA **(%%)is a combination to show which condition is trigger. Totally 1byte as below
727 727  
728 728  [[image:image-20220524090456-4.png]]
... ... @@ -736,6 +736,7 @@
736 736  00000101: Means both DI1 and DI2 trigger are enabled.
737 737  
738 738  
733 +
739 739  (% style="color:#4f81bd" %)**Enable/Disable MOD6 **(%%): 0x01: MOD6 is enable. 0x00: MOD6 is disable.
740 740  
741 741  Downlink command to poll MOD6 status:
... ... @@ -745,6 +745,7 @@
745 745  When device got this command, it will send the MOD6 payload.
746 746  
747 747  
743 +
748 748  === 3.3.7 Payload Decoder ===
749 749  
750 750  (((
... ... @@ -754,6 +754,7 @@
754 754  )))
755 755  
756 756  
753 +
757 757  == 3.4 ​Configure LT via AT or Downlink ==
758 758  
759 759  
... ... @@ -771,7 +771,6 @@
771 771  
772 772  * (% style="color:blue" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
773 773  
774 -
775 775  === 3.4.1 Common Commands ===
776 776  
777 777  
... ... @@ -780,8 +780,10 @@
780 780  )))
781 781  
782 782  
779 +
783 783  === 3.4.2 Sensor related commands ===
784 784  
782 +
785 785  ==== 3.4.2.1 Set Transmit Interval ====
786 786  
787 787  
... ... @@ -857,6 +857,7 @@
857 857  
858 858  
859 859  
858 +
860 860  ==== 3.4.2.5 Poll trigger settings ====
861 861  
862 862  
... ... @@ -939,7 +939,7 @@
939 939  
940 940  * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 02 ):**
941 941  
942 -(% style="color:blue" %)**0x09 02 aa bb cc   ** (%%)~/~/ same as AT+TRIG2=aa,0x(bb cc)
941 +(% style="color:blue" %)**0x09 02 aa bb cc   ** (%%)~/~/ same as AT+TRIG1=aa,0x(bb cc)
943 943  
944 944  
945 945  
... ... @@ -1071,9 +1071,8 @@
1071 1071  
1072 1072   Latching time. Unit: ms
1073 1073  
1073 +Note:
1074 1074  
1075 -(% style="color:red" %)**Note: **
1076 -
1077 1077   Since Firmware v1.6.0, the latch time support 4 bytes and 2 bytes
1078 1078  
1079 1079   Before Firmwre v1.6.0 the latch time only suport 2 bytes.
... ... @@ -1102,7 +1102,7 @@
1102 1102  
1103 1103  
1104 1104  
1105 -==== 3.4.2. 14 Relay ~-~- Control Relay Output RO1/RO2 ====
1103 +==== 3.4.2.14 Relay ~-~- Control Relay Output RO1/RO2 ====
1106 1106  
1107 1107  
1108 1108  * (% style="color:#037691" %)**AT Command:**
... ... @@ -1124,7 +1124,7 @@
1124 1124  )))
1125 1125  
1126 1126  (((
1127 -[[image:image-20230426161322-1.png]]
1125 +[[image:image-20220524093724-9.png]]
1128 1128  )))
1129 1129  
1130 1130  (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
... ... @@ -1131,6 +1131,7 @@
1131 1131  
1132 1132  
1133 1133  
1132 +
1134 1134  ==== 3.4.2.15 Relay ~-~- Control Relay Output RO1/RO2 with time control ====
1135 1135  
1136 1136  
... ... @@ -1162,9 +1162,8 @@
1162 1162  
1163 1163  (% style="color:#4f81bd" %)**Fourth/Fifth/Sixth/Seventh Bytes(cc)**(%%): Latching time. Unit: ms
1164 1164  
1164 +Note:
1165 1165  
1166 -(% style="color:red" %)**Note:**
1167 -
1168 1168   Since Firmware v1.6.0, the latch time support 4 bytes and 2 bytes
1169 1169  
1170 1170   Before Firmwre v1.6.0 the latch time only suport 2 bytes.
... ... @@ -1175,7 +1175,7 @@
1175 1175  
1176 1176  **Example payload:**
1177 1177  
1178 -**~1. 05 01 11 07 D0**
1176 +**~1. 05 01 11 07 D**
1179 1179  
1180 1180  Relay1 and Relay 2 will be set to NC , last 2 seconds, then change back to original state.
1181 1181  
... ... @@ -1310,6 +1310,7 @@
1310 1310  
1311 1311  
1312 1312  
1311 +
1313 1313  ==== 3.4.2.24 When the limit bytes are exceeded, upload in batches ====
1314 1314  
1315 1315  
... ... @@ -1326,6 +1326,7 @@
1326 1326  
1327 1327  
1328 1328  
1328 +
1329 1329  ==== 3.4.2.25 Copy downlink to uplink ====
1330 1330  
1331 1331  
... ... @@ -1364,6 +1364,7 @@
1364 1364  [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220823173929-8.png?width=1205&height=76&rev=1.1||alt="image-20220823173929-8.png"]]
1365 1365  
1366 1366  
1367 +
1367 1367  == 3.5 Integrate with Mydevice ==
1368 1368  
1369 1369  
... ... @@ -1413,8 +1413,10 @@
1413 1413  [[image:image-20220524094909-5.png||height="341" width="734"]]
1414 1414  
1415 1415  
1417 +
1416 1416  == 3.6 Interface Detail ==
1417 1417  
1420 +
1418 1418  === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
1419 1419  
1420 1420  
... ... @@ -1423,6 +1423,7 @@
1423 1423  [[image:1653356991268-289.png]]
1424 1424  
1425 1425  
1429 +
1426 1426  === 3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) ===
1427 1427  
1428 1428  
... ... @@ -1479,6 +1479,8 @@
1479 1479  
1480 1480  (((
1481 1481  
1486 +
1487 +
1482 1482  )))
1483 1483  
1484 1484  (((
... ... @@ -1510,6 +1510,8 @@
1510 1510  
1511 1511  (((
1512 1512  
1519 +
1520 +
1513 1513  )))
1514 1514  
1515 1515  (((
... ... @@ -1540,16 +1540,18 @@
1540 1540  )))
1541 1541  
1542 1542  
1551 +
1543 1543  === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1544 1544  
1545 1545  
1546 -(% style="color:blue" %)**NPN output**(%%): GND or Float. Max voltage can apply to output pin is 36v.
1555 +**NPN output**: GND or Float. Max voltage can apply to output pin is 36v.
1547 1547  
1548 -(% style="color:red" %)**Note: DO pins go to float when device is power off.**
1557 +Note: DO pins go to float when device is power off.
1549 1549  
1550 1550  [[image:1653357531600-905.png]]
1551 1551  
1552 1552  
1562 +
1553 1553  === 3.6.4 Analog Input Interface ===
1554 1554  
1555 1555  
... ... @@ -1567,9 +1567,9 @@
1567 1567  
1568 1568  (% style="color:blue" %)**Specifications of the wind speed sensor:**
1569 1569  
1570 -(% style="color:red" %)**Red:  12~~24v**
1580 +**Red:  12~~24v**
1571 1571  
1572 -(% style="color:#ffc000" %)**Yellow:  4~~20mA**
1582 +**Yellow:  4~~20mA**
1573 1573  
1574 1574  **Black:  GND**
1575 1575  
... ... @@ -1581,6 +1581,7 @@
1581 1581  [[image:1653357648330-671.png||height="155" width="733"]]
1582 1582  
1583 1583  
1594 +
1584 1584  === 3.6.5 Relay Output ===
1585 1585  
1586 1586  
... ... @@ -1596,6 +1596,7 @@
1596 1596  [[image:image-20220524100215-10.png||height="382" width="723"]]
1597 1597  
1598 1598  
1610 +
1599 1599  == 3.7 LEDs Indicators ==
1600 1600  
1601 1601  
... ... @@ -1602,8 +1602,10 @@
1602 1602  [[image:image-20220524100748-11.png]]
1603 1603  
1604 1604  
1617 +
1605 1605  = 4. Use AT Command =
1606 1606  
1620 +
1607 1607  == 4.1 Access AT Command ==
1608 1608  
1609 1609  
... ... @@ -1814,8 +1814,10 @@
1814 1814  )))
1815 1815  
1816 1816  
1831 +
1817 1817  == 4.2 Common AT Command Sequence ==
1818 1818  
1834 +
1819 1819  === 4.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1820 1820  
1821 1821  (((
... ... @@ -1860,6 +1860,7 @@
1860 1860  )))
1861 1861  
1862 1862  
1879 +
1863 1863  === 4.2.2 Single-channel ABP mode (Use with LG01/LG02) ===
1864 1864  
1865 1865  (((
... ... @@ -1932,7 +1932,7 @@
1932 1932  **3. Make sure SF / bandwidth setting in LG01/LG02 match the settings of AT+DR. refer [[this link>>url:http://www.dragino.com/downloads/index.php?
1933 1933  dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.**
1934 1934  
1935 -**4. The command AT+RX2FQ and AT+RX2DR is to let downlink work. to set the correct parameters, user can check the actually downlink parameters to be used. As below. Which shows the RX2FQ should use 868400000 and RX2DR should be 5.**
1952 +**4. The command AT+RX2FQ and AT+RX2DR is to let downlink work. to set the correct parameters, user can check the actually downlink parameters to be used. As below. Which shows the RX2FQ should use 868400000 and RX2DR should be 5**
1936 1936  
1937 1937  
1938 1938  )))
... ... @@ -1945,6 +1945,7 @@
1945 1945  
1946 1946  )))
1947 1947  
1965 +
1948 1948  === 4.2.3 Change to Class A ===
1949 1949  
1950 1950  
... ... @@ -1956,19 +1956,13 @@
1956 1956  )))
1957 1957  
1958 1958  
1959 -= 5. Case Study =
1960 1960  
1961 -== 5.1 Counting how many objects pass in Flow Line ==
1978 += 5. FAQ =
1962 1962  
1963 1963  
1964 -Reference Link: [[How to set up to count objects pass in flow line>>How to set up to count objects pass in flow line]]?
1981 +== 5.1 How to upgrade the image? ==
1965 1965  
1966 1966  
1967 -= 6. FAQ =
1968 -
1969 -== 6.1 How to upgrade the image? ==
1970 -
1971 -
1972 1972  The LT LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to LT to:
1973 1973  
1974 1974  * Support new features
... ... @@ -1996,10 +1996,8 @@
1996 1996  
1997 1997   [[image:image-20220524103407-12.png]]
1998 1998  
1999 -
2000 2000  [[image:image-20220524103429-13.png]]
2001 2001  
2002 -
2003 2003  [[image:image-20220524104033-15.png]]
2004 2004  
2005 2005  
... ... @@ -2011,8 +2011,10 @@
2011 2011  
2012 2012  (((
2013 2013  (((
2014 -== 6.2 How to change the LoRa Frequency Bands/Region? ==
2024 +
2015 2015  
2026 +== 5.2 How to change the LoRa Frequency Bands/Region? ==
2027 +
2016 2016  
2017 2017  )))
2018 2018  )))
... ... @@ -2024,8 +2024,9 @@
2024 2024  (((
2025 2025  
2026 2026  
2027 -== 6.3 How to set up LT to work with Single Channel Gateway such as LG01/LG02? ==
2028 2028  
2040 +== 5.3 How to set up LT to work with Single Channel Gateway such as LG01/LG02? ==
2041 +
2029 2029  
2030 2030  )))
2031 2031  
... ... @@ -2087,29 +2087,26 @@
2087 2087  [[image:1653360498588-932.png||height="485" width="726"]]
2088 2088  
2089 2089  
2090 -== 6.4 How to change the uplink interval？ ==
2091 2091  
2104 +== 5.4 Can I see counting event in Serial? ==
2092 2092  
2093 -Please see this link: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/]]
2094 2094  
2095 -
2096 -== 6.5 Can I see counting event in Serial? ==
2097 -
2098 -
2099 2099  (((
2100 2100  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.
2101 2101  
2102 2102  
2103 -== 6.6 Can i use point to point communication for LT-22222-L? ==
2104 2104  
2112 +== 5.5 Can i use point to point communication for LT-22222-L? ==
2105 2105  
2114 +
2106 2106  Yes, please refer [[Point to Point Communication>>doc:Main. Point to Point Communication of LT-22222-L.WebHome]]  ，this is [[firmware>>https://github.com/dragino/LT-22222-L/releases]].
2107 2107  
2117 +
2108 2108  
2109 2109  )))
2110 2110  
2111 2111  (((
2112 -== 6.7 Why does the relay output become the default and open relay after the lt22222 is powered off? ==
2122 +== 5.6 Why does the relay output become the default and open relay after the lt22222 is powered off? ==
2113 2113  
2114 2114  
2115 2115  If the device is not shut down, but directly powered off.
... ... @@ -2121,9 +2121,10 @@
2121 2121  After restart, the status before power failure will be read from flash.
2122 2122  
2123 2123  
2124 -== 6.8 Can i set up LT-22222-L as a NC(Normal Close) Relay? ==
2125 2125  
2135 +== 5.7 Can i set up LT-22222-L as a NC(Normal Close) Relay? ==
2126 2126  
2137 +
2127 2127  LT-22222-L built-in relay is NO (Normal Open). User can use an external relay to achieve Normal Close purpose. Diagram as below:
2128 2128  
2129 2129  
... ... @@ -2130,18 +2130,21 @@
2130 2130  [[image:image-20221006170630-1.png||height="610" width="945"]]
2131 2131  
2132 2132  
2133 -== 6.9 Can LT22222-L save RO state? ==
2144 +== 5.8 Can LT22222-L save RO state? ==
2134 2134  
2135 2135  
2136 2136  Firmware version needs to be no less than 1.6.0.
2137 2137  
2138 2138  
2139 -= 7. Trouble Shooting =
2150 +
2151 += 6. Trouble Shooting =
2152 +
2153 +
2140 2140  )))
2141 2141  
2142 2142  (((
2143 2143  (((
2144 -== 7.1 Downlink doesn't work, how to solve it? ==
2158 +== 6.1 Downlink doesn't work, how to solve it? ==
2145 2145  
2146 2146  
2147 2147  )))
... ... @@ -2154,8 +2154,9 @@
2154 2154  (((
2155 2155  
2156 2156  
2157 -== 7.2 Have trouble to upload image. ==
2158 2158  
2172 +== 6.2 Have trouble to upload image. ==
2173 +
2159 2159  
2160 2160  )))
2161 2161  
... ... @@ -2166,8 +2166,9 @@
2166 2166  (((
2167 2167  
2168 2168  
2169 -== 7.3 Why I can't join TTN in US915 /AU915 bands? ==
2170 2170  
2185 +== 6.3 Why I can't join TTN in US915 /AU915 bands? ==
2186 +
2171 2171  
2172 2172  )))
2173 2173  
... ... @@ -2176,9 +2176,10 @@
2176 2176  )))
2177 2177  
2178 2178  
2179 -= 8. Order Info =
2180 2180  
2196 += 7. Order Info =
2181 2181  
2198 +
2182 2182  (% style="color:#4f81bd" %)**LT-22222-L-XXX:**
2183 2183  
2184 2184  (% style="color:#4f81bd" %)**XXX:**
... ... @@ -2193,10 +2193,9 @@
2193 2193  * (% style="color:red" %)**IN865**(%%):  LT with frequency bands IN865
2194 2194  * (% style="color:red" %)**CN779**(%%):  LT with frequency bands CN779
2195 2195  
2213 += 8. Packing Info =
2196 2196  
2197 -= 9. Packing Info =
2198 2198  
2199 -
2200 2200  **Package Includes**:
2201 2201  
2202 2202  * LT-22222-L I/O Controller x 1
... ... @@ -2211,10 +2211,9 @@
2211 2211  * Package Size / pcs : 14.5 x 8 x 5 cm
2212 2212  * Weight / pcs : 170g
2213 2213  
2230 += 9. Support =
2214 2214  
2215 -= 10. Support =
2216 2216  
2217 -
2218 2218  * (((
2219 2219  Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
2220 2220  )))
... ... @@ -2225,7 +2225,7 @@
2225 2225  
2226 2226  )))
2227 2227  
2228 -= 11. Reference​​​​​ =
2243 += 10. Reference​​​​​ =
2229 2229  
2230 2230  
2231 2231  * LT-22222-L: [[http:~~/~~/www.dragino.com/products/lora-lorawan-end-node/item/156-lt-22222-l.html>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/156-lt-22222-l.html]]
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