Changes for page LT-22222-L -- LoRa I/O Controller User Manual
Last modified by Mengting Qiu on 2025/06/04 18:42
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... ... @@ -75,7 +75,6 @@ 75 75 ))) 76 76 ))) 77 77 78 - 79 79 ((( 80 80 **Interface for Model: LT22222-L:** 81 81 ))) ... ... @@ -99,7 +99,6 @@ 99 99 Power Input 7~~ 24V DC. 100 100 ))) 101 101 102 - 103 103 ((( 104 104 **LoRa Spec:** 105 105 ))) ... ... @@ -207,6 +207,7 @@ 207 207 [[image:1653297104069-180.png]] 208 208 209 209 208 + 210 210 = 3. Operation Mode = 211 211 212 212 == 3.1 How it works? == ... ... @@ -221,6 +221,8 @@ 221 221 222 222 ))) 223 223 223 + 224 + 224 224 == 3.2 Example to join LoRaWAN network == 225 225 226 226 ((( ... ... @@ -262,6 +262,7 @@ 262 262 [[image:1653298044601-602.png||height="405" width="709"]] 263 263 264 264 266 + 265 265 == 3.3 Uplink Payload == 266 266 267 267 There are five working modes + one interrupt mode on LT for different type application: ... ... @@ -416,6 +416,7 @@ 416 416 ))) 417 417 418 418 421 + 419 419 === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI === 420 420 421 421 **LT22222-L**: This mode the DI1 is used as a counting pin. ... ... @@ -460,6 +460,8 @@ 460 460 461 461 ))) 462 462 466 + 467 + 463 463 === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting === 464 464 465 465 **LT22222-L**: This mode the DI1 is used as a counting pin. ... ... @@ -541,6 +541,7 @@ 541 541 ))) 542 542 543 543 549 + 544 544 === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI === 545 545 546 546 **LT22222-L**: This mode the DI1 is used as a counting pin. ... ... @@ -585,6 +585,8 @@ 585 585 586 586 ))) 587 587 594 + 595 + 588 588 === 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) === 589 589 590 590 (% style="color:#4f81bd" %)**This mode is an optional mode for trigger purpose. It can run together with other mode.** ... ... @@ -708,6 +708,7 @@ 708 708 When device got this command, it will send the MOD6 payload. 709 709 710 710 719 + 711 711 === 3.3.7 Payload Decoder === 712 712 713 713 ((( ... ... @@ -716,6 +716,8 @@ 716 716 717 717 ))) 718 718 728 + 729 + 719 719 == 3.4 Configure LT via AT or Downlink == 720 720 721 721 User can configure LT I/O Controller via AT Commands or LoRaWAN Downlink Commands ... ... @@ -733,6 +733,7 @@ 733 733 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]] 734 734 735 735 747 + 736 736 === 3.4.2 Sensor related commands === 737 737 738 738 ==== 3.4.2.1 Set Transmit Interval ==== ... ... @@ -756,6 +756,7 @@ 756 756 ))) 757 757 758 758 771 + 759 759 ==== 3.4.2.2 Set Work Mode (AT+MOD) ==== 760 760 761 761 Set work mode. ... ... @@ -777,6 +777,7 @@ 777 777 ))) 778 778 779 779 793 + 780 780 ==== 3.4.2.3 Poll an uplink ==== 781 781 782 782 * AT Command: ... ... @@ -793,6 +793,7 @@ 793 793 **Example**: 0x08FF, ask device to send an Uplink 794 794 795 795 810 + 796 796 ==== 3.4.2.4 Enable Trigger Mode ==== 797 797 798 798 Use of trigger mode, please check [[ADDMOD6>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]] ... ... @@ -816,6 +816,7 @@ 816 816 ))) 817 817 818 818 834 + 819 819 ==== 3.4.2.5 Poll trigger settings ==== 820 820 821 821 Poll trigger settings, ... ... @@ -832,6 +832,7 @@ 832 832 ))) 833 833 834 834 851 + 835 835 ==== 3.4.2.6 Enable / Disable DI1/DI2/DI3 as trigger ==== 836 836 837 837 Enable Disable DI1/DI2/DI2 as trigger, ... ... @@ -855,6 +855,7 @@ 855 855 ))) 856 856 857 857 875 + 858 858 ==== 3.4.2.7 Trigger1 – Set DI1 or DI3 as trigger ==== 859 859 860 860 Set DI1 or DI3(for LT-33222-L) trigger. ... ... @@ -882,6 +882,7 @@ 882 882 ))) 883 883 884 884 903 + 885 885 ==== 3.4.2.8 Trigger2 – Set DI2 as trigger ==== 886 886 887 887 Set DI2 trigger. ... ... @@ -909,6 +909,7 @@ 909 909 ))) 910 910 911 911 931 + 912 912 ==== 3.4.2.9 Trigger – Set AC (current) as trigger ==== 913 913 914 914 Set current trigger , base on AC port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]] ... ... @@ -928,6 +928,7 @@ 928 928 ))) 929 929 930 930 951 + 931 931 ==== 3.4.2.10 Trigger – Set AV (voltage) as trigger ==== 932 932 933 933 Set current trigger , base on AV port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]] ... ... @@ -947,6 +947,7 @@ 947 947 ))) 948 948 949 949 971 + 950 950 ==== 3.4.2.11 Trigger – Set minimum interval ==== 951 951 952 952 Set AV and AC trigger minimum interval, system won’t response to the second trigger within this set time after the first trigger. ... ... @@ -966,6 +966,7 @@ 966 966 ))) 967 967 968 968 991 + 969 969 ==== 3.4.2.12 DO ~-~- Control Digital Output DO1/DO2/DO3 ==== 970 970 971 971 * AT Command: ... ... @@ -998,6 +998,7 @@ 998 998 ))) 999 999 1000 1000 1024 + 1001 1001 ==== 3.4.2.13 DO ~-~- Control Digital Output DO1/DO2/DO3 with time control ==== 1002 1002 1003 1003 * AT Command: ... ... @@ -1060,6 +1060,7 @@ 1060 1060 DO1 pin no action, DO2 pin set low, DO3 pin set high, last 2 seconds, then DO1 pin no action, DO2 pin set high, DO3 pin set low 1061 1061 1062 1062 1087 + 1063 1063 === 3.4.2.14 Relay ~-~- Control Relay Output RO1/RO2 === 1064 1064 1065 1065 * AT Command: ... ... @@ -1088,6 +1088,7 @@ 1088 1088 Device will upload a packet if downlink code executes successfully. 1089 1089 1090 1090 1116 + 1091 1091 ==== 3.4.2.15 Relay ~-~- Control Relay Output RO1/RO2 with time control ==== 1092 1092 1093 1093 * AT Command: ... ... @@ -1138,6 +1138,7 @@ 1138 1138 Relay 1 & relay2 will change to NC, last 2 seconds, then both change to NO. 1139 1139 1140 1140 1167 + 1141 1141 ==== 3.4.2.16 Counting ~-~- Voltage threshold counting ==== 1142 1142 1143 1143 When voltage exceed the threshold, count. Feature see [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]] ... ... @@ -1157,6 +1157,7 @@ 1157 1157 ))) 1158 1158 1159 1159 1187 + 1160 1160 ==== 3.4.2.17 Counting ~-~- Pre-configure the Count Number ==== 1161 1161 1162 1162 * AT Command: ... ... @@ -1182,6 +1182,7 @@ 1182 1182 ))) 1183 1183 1184 1184 1213 + 1185 1185 ==== 3.4.2.18 Counting ~-~- Clear Counting ==== 1186 1186 1187 1187 Clear counting for counting mode ... ... @@ -1201,6 +1201,7 @@ 1201 1201 ))) 1202 1202 1203 1203 1233 + 1204 1204 ==== 3.4.2.19 Counting ~-~- Change counting mode save time ==== 1205 1205 1206 1206 * AT Command: ... ... @@ -1223,6 +1223,8 @@ 1223 1223 1224 1224 ))) 1225 1225 1256 + 1257 + 1226 1226 == 3.5 Integrate with Mydevice == 1227 1227 1228 1228 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: ... ... @@ -1264,6 +1264,7 @@ 1264 1264 [[image:image-20220524094909-5.png||height="341" width="734"]] 1265 1265 1266 1266 1299 + 1267 1267 == 3.6 Interface Detail == 1268 1268 1269 1269 === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) === ... ... @@ -1273,6 +1273,7 @@ 1273 1273 [[image:1653356991268-289.png]] 1274 1274 1275 1275 1309 + 1276 1276 === 3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) === 1277 1277 1278 1278 ((( ... ... @@ -1387,6 +1387,7 @@ 1387 1387 ))) 1388 1388 1389 1389 1424 + 1390 1390 === 3.6.3 Digital Output Port: DO1/DO2 /DO3 === 1391 1391 1392 1392 NPN output: GND or Float. Max voltage can apply to output pin is 36v. ... ... @@ -1394,6 +1394,7 @@ 1394 1394 [[image:1653357531600-905.png]] 1395 1395 1396 1396 1432 + 1397 1397 === 3.6.4 Analog Input Interface === 1398 1398 1399 1399 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: ... ... @@ -1422,6 +1422,7 @@ 1422 1422 [[image:1653357648330-671.png||height="155" width="733"]] 1423 1423 1424 1424 1461 + 1425 1425 === 3.6.5 Relay Output === 1426 1426 1427 1427 ((( ... ... @@ -1433,6 +1433,7 @@ 1433 1433 [[image:image-20220524100215-10.png||height="382" width="723"]] 1434 1434 1435 1435 1473 + 1436 1436 == 3.7 LEDs Indicators == 1437 1437 1438 1438 [[image:image-20220524100748-11.png]] ... ... @@ -1642,6 +1642,8 @@ 1642 1642 1643 1643 ))) 1644 1644 1683 + 1684 + 1645 1645 == 4.2 Common AT Command Sequence == 1646 1646 1647 1647 === 4.2.1 Multi-channel ABP mode (Use with SX1301/LG308) === ... ... @@ -1685,6 +1685,8 @@ 1685 1685 1686 1686 ))) 1687 1687 1728 + 1729 + 1688 1688 === 4.2.2 Single-channel ABP mode (Use with LG01/LG02) === 1689 1689 1690 1690 ((( ... ... @@ -1758,6 +1758,8 @@ 1758 1758 1759 1759 ))) 1760 1760 1803 + 1804 + 1761 1761 === 4.2.3 Change to Class A === 1762 1762 1763 1763 If sensor JOINED ... ... @@ -1769,19 +1769,25 @@ 1769 1769 1770 1770 == 5.1 How to upgrade the image? == 1771 1771 1816 + 1772 1772 The LT LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to LT to: 1773 1773 1774 1774 * Support new features 1775 1775 * For bug fix 1776 1776 * Change LoRaWAN bands. 1822 + 1777 1777 Below shows the hardware connection for how to upload an image to the LT: 1778 -* [[image:1653359603330-121.png]] 1779 1779 1825 +[[image:1653359603330-121.png]] 1826 + 1827 + 1780 1780 ((( 1781 -**Step1:** Download [[flash loader>>url:https://www.st.com/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-programmers/flasher-stm32.html]]. 1782 -**Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]]. 1783 -**Step3: **Open flashloader; choose the correct COM port to update. 1784 -**For LT-22222-L**: 1829 +(% style="color:blue" %)**Step1**(%%)**:** Download [[flash loader>>url:https://www.st.com/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-programmers/flasher-stm32.html]]. 1830 +(% style="color:blue" %)**Step2**(%%)**:** Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]]. 1831 +(% style="color:blue" %)**Step3**(%%)**:** Open flashloader; choose the correct COM port to update. 1832 + 1833 + 1834 +(% style="color:blue" %)**For LT-22222-L**(%%): 1785 1785 Hold down the PRO button and then momentarily press the RST reset button and the **DO1 led** will change from OFF to ON. When **DO1 LED** is on, it means the device is in download mode. 1786 1786 ))) 1787 1787 ... ... @@ -1798,6 +1798,8 @@ 1798 1798 1799 1799 ((( 1800 1800 ((( 1851 + 1852 + 1801 1801 == 5.2 How to change the LoRa Frequency Bands/Region? == 1802 1802 ))) 1803 1803 ))) ... ... @@ -1804,11 +1804,11 @@ 1804 1804 1805 1805 ((( 1806 1806 User can follow the introduction for [[how to upgrade image>>||anchor="H5.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download. 1807 - 1808 - 1809 1809 ))) 1810 1810 1811 1811 ((( 1862 + 1863 + 1812 1812 == 5.3 How to set up LT to work with Single Channel Gateway such as LG01/LG02? == 1813 1813 ))) 1814 1814 ... ... @@ -1821,6 +1821,8 @@ 1821 1821 ((( 1822 1822 ((( 1823 1823 Assume we have a LG02 working in the frequency 868400000 now , below is the step. 1876 + 1877 + 1824 1824 ))) 1825 1825 ))) 1826 1826 ... ... @@ -1836,23 +1836,25 @@ 1836 1836 (% style="color:red" %)Note: user just need to make sure above three keys match, User can change either in TTN or Device to make then match. In TTN, NETSKEY and APPSKEY can be configured by user in setting page, but Device Addr is generated by TTN. 1837 1837 ))) 1838 1838 1893 + 1839 1839 ((( 1840 1840 (% style="color:#4f81bd" %)**Step2**(%%)**: **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands: 1841 1841 ))) 1842 1842 1843 1843 ((( 1844 -(% style="background-color:#dcdcdc" %)123456 (%%) Enter Password to have AT access. 1845 -(% style="background-color:#dcdcdc" %)AT+FDR 1846 -(% style="background-color:#dcdcdc" %)123456 1847 -(% style="background-color:#dcdcdc" %)AT+NJM=0 (%%)Set to ABP mode 1848 -(% style="background-color:#dcdcdc" %)AT+ADR=0 (%%)Set the Adaptive Data Rate Off 1849 -(% style="background-color:#dcdcdc" %)AT+DR=5 (%%) Set Data Rate (Set AT+DR=3 for 915 band) 1850 -(% style="background-color:#dcdcdc" %)AT+TDC=60000 1851 -(% style="background-color:#dcdcdc" %)AT+CHS=868400000 1852 -(% style="background-color:#dcdcdc" %)AT+DADDR=26 01 1A F1(%%) Set Device Address to 26 01 1A F1 1853 -(% style="background-color:#dcdcdc" %)ATZ 1899 +(% style="background-color:#dcdcdc" %)123456 (%%) Enter Password to have AT access. 1900 +(% style="background-color:#dcdcdc" %)AT+FDR(%%) Reset Parameters to Factory Default, Keys Reserve 1901 +(% style="background-color:#dcdcdc" %)123456 (%%) Enter Password to have AT access. 1902 +(% style="background-color:#dcdcdc" %)AT+NJM=0 (%%) Set to ABP mode 1903 +(% style="background-color:#dcdcdc" %)AT+ADR=0 (%%) Set the Adaptive Data Rate Off 1904 +(% style="background-color:#dcdcdc" %)AT+DR=5 (%%) Set Data Rate (Set AT+DR=3 for 915 band) 1905 +(% style="background-color:#dcdcdc" %)AT+TDC=60000 (%%) Set transmit interval to 60 seconds 1906 +(% style="background-color:#dcdcdc" %)AT+CHS=868400000(%%) Set transmit frequency to 868.4Mhz 1907 +(% style="background-color:#dcdcdc" %)AT+DADDR=26 01 1A F1(%%) Set Device Address to 26 01 1A F1 1908 +(% style="background-color:#dcdcdc" %)ATZ (%%) Reset MCU 1854 1854 ))) 1855 1855 1911 + 1856 1856 ((( 1857 1857 As shown in below: 1858 1858 ))) ... ... @@ -1869,11 +1869,11 @@ 1869 1869 == 5.5 Can i use point to point communication for LT-22222-L? == 1870 1870 1871 1871 Yes, please refer [[Point to Point Communication>>doc:Main. Point to Point Communication of LT-22222-L.WebHome]] 1872 - 1873 - 1874 1874 ))) 1875 1875 1876 1876 ((( 1931 + 1932 + 1877 1877 = 6. Trouble Shooting = 1878 1878 ))) 1879 1879 ... ... @@ -1885,11 +1885,11 @@ 1885 1885 1886 1886 ((( 1887 1887 Please see this link for how to debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H5.1Howitwork"]] 1888 - 1889 - 1890 1890 ))) 1891 1891 1892 1892 ((( 1947 + 1948 + 1893 1893 == 6.2 Have trouble to upload image. == 1894 1894 ))) 1895 1895 ... ... @@ -1899,9 +1899,7 @@ 1899 1899 1900 1900 ((( 1901 1901 1902 -))) 1903 1903 1904 -((( 1905 1905 == 6.3 Why I can’t join TTN in US915 /AU915 bands? == 1906 1906 ))) 1907 1907 ... ... @@ -1909,147 +1909,58 @@ 1909 1909 It might be about the channels mapping. [[Please see this link for detail>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]] 1910 1910 ))) 1911 1911 1912 -((( 1913 - 1914 -))) 1915 1915 1916 - (((1967 + 1917 1917 = 7. Order Info = 1918 -))) 1919 1919 1920 -((( 1921 -((( 1970 + 1922 1922 (% style="color:#4f81bd" %)**LT-22222-L-XXX:** 1923 -))) 1924 -))) 1925 1925 1926 -((( 1927 -((( 1973 + 1928 1928 (% style="color:#4f81bd" %)**XXX:** 1929 -))) 1930 -))) 1931 1931 1932 -((( 1933 -* ((( 1934 -(% style="color:#4f81bd" %)**EU433**(%%): LT with frequency bands EU433 1935 -))) 1936 -))) 1976 +* (% style="color:#4f81bd" %)**EU433**(%%): LT with frequency bands EU433 1977 +* (% style="color:#4f81bd" %)**EU868**(%%): LT with frequency bands EU868 1978 +* (% style="color:#4f81bd" %)**KR920**(%%): LT with frequency bands KR920 1979 +* (% style="color:#4f81bd" %)**CN470**(%%): LT with frequency bands CN470 1980 +* (% style="color:#4f81bd" %)**AS923**(%%): LT with frequency bands AS923 1981 +* (% style="color:#4f81bd" %)**AU915**(%%): LT with frequency bands AU915 1982 +* (% style="color:#4f81bd" %)**US915**(%%): LT with frequency bands US915 1983 +* (% style="color:#4f81bd" %)**IN865**(%%): LT with frequency bands IN865 1984 +* (% style="color:#4f81bd" %)**CN779**(%%): LT with frequency bands CN779 1937 1937 1938 -((( 1939 -* ((( 1940 -(% style="color:#4f81bd" %)**EU868**(%%): LT with frequency bands EU868 1941 -))) 1942 -))) 1943 1943 1944 -((( 1945 -* ((( 1946 -(% style="color:#4f81bd" %)**KR920**(%%): LT with frequency bands KR920 1947 -))) 1948 -))) 1949 - 1950 -((( 1951 -* ((( 1952 -(% style="color:#4f81bd" %)**CN470**(%%): LT with frequency bands CN470 1953 -))) 1954 -))) 1955 - 1956 -((( 1957 -* ((( 1958 -(% style="color:#4f81bd" %)**AS923**(%%): LT with frequency bands AS923 1959 -))) 1960 -))) 1961 - 1962 -((( 1963 -* ((( 1964 -(% style="color:#4f81bd" %)**AU915**(%%): LT with frequency bands AU915 1965 -))) 1966 -))) 1967 - 1968 -((( 1969 -* ((( 1970 -(% style="color:#4f81bd" %)**US915**(%%): LT with frequency bands US915 1971 -))) 1972 -))) 1973 - 1974 -((( 1975 -* ((( 1976 -(% style="color:#4f81bd" %)**IN865**(%%): LT with frequency bands IN865 1977 -))) 1978 -))) 1979 - 1980 -((( 1981 -* ((( 1982 -(% style="color:#4f81bd" %)**CN779**(%%): LT with frequency bands CN779 1983 - 1984 - 1985 -))) 1986 - 1987 1987 = 8. Packing Info = 1988 -))) 1989 1989 1990 -((( 1991 -((( 1989 + 1992 1992 **Package Includes**: 1993 -))) 1994 -))) 1995 1995 1996 -((( 1997 -((( 1998 1998 * LT-22222-L I/O Controller x 1 1999 1999 * Stick Antenna for LoRa RF part x 1 2000 2000 * Bracket for controller x1 2001 2001 * Program cable x 1 2002 -))) 2003 -))) 2004 2004 2005 -((( 2006 -((( 2007 2007 **Dimension and weight**: 2008 -))) 2009 -))) 2010 2010 2011 -((( 2012 -((( 2013 2013 * Device Size: 13.5 x 7 x 3 cm 2014 2014 * Device Weight: 105g 2015 2015 * Package Size / pcs : 14.5 x 8 x 5 cm 2016 2016 * Weight / pcs : 170g 2017 2017 2018 - 2019 -))) 2020 -))) 2021 2021 2022 -((( 2023 2023 = 9. Support = 2024 -))) 2025 2025 2026 2026 * ((( 2027 -((( 2028 2028 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. 2029 2029 ))) 2030 -))) 2031 2031 * ((( 2032 -((( 2033 -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 2011 +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:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]] 2034 2034 ))) 2035 -))) 2036 2036 2037 -((( 2038 -((( 2039 - [[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]] 2040 2040 2041 - 2042 -))) 2043 - 2044 -((( 2045 2045 = 10. Reference = 2046 2046 2047 -* Product Page: 2048 - 2049 -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]] 2050 - 2017 +* 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]] 2051 2051 * [[Image Download>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]] 2052 2052 * [[AT Command Manual>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]] 2053 2053 * [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]] 2054 -))) 2055 -)))