Changes for page LT-22222-L -- LoRa I/O Controller User Manual

Last modified by Saxer Lin on 2025/04/15 17:24

From version < 102.1 >

edited by Bei Jinggeng
on 2022/10/28 17:08

To version < 97.2 >

edited by Xiaoling
on 2022/09/12 09:21

Change comment: There is no comment for this version

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- image-20221006170630-1.png
- image-20221008095908-1.png

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Author

@@ -1,1 +1,1 @@
--XWiki.Bei
++XWiki.Xiaoling

Content

@@ -21,10 +21,8 @@
  (((
--(((
  The Dragino (% style="color:blue" %)**LT series I/O Modules**(%%) are Long Range LoRaWAN I/O Controller. It contains different I/O Interfaces such as:** (% style="color:blue" %)analog current Input, analog voltage input(%%)**(% style="color:blue" %), **relay output**, **digital input**(%%) and (% style="color:blue" %)**digital output**(%%) etc. The LT I/O Modules are designed to simplify the installation of I/O monitoring.
  )))
--)))
  (((
  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.
@@ -187,6 +187,8 @@
  * Counting
++
++
  == 1.4  Applications ==
@@ -198,6 +198,8 @@
  * Smart Factory
++
++
  == 1.5 Hardware Variants ==
@@ -213,12 +213,12 @@
  )))
++
++
  = 2. Power ON Device =
--(((
  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.
--)))
  (((
  PWR will on when device is properly powered.
@@ -277,12 +277,12 @@
  Input these keys in the LoRaWAN Server portal. Below is TTN screen shot:
--**Add APP EUI in the application.**
++Add APP EUI in the application.
  [[image:1653297955910-247.png||height="321" width="716"]]
--**Add APP KEY and DEV EUI**
++Add APP KEY and DEV EUI
  [[image:1653298023685-319.png]]
@@ -290,8 +290,6 @@
  (((
  (% style="color:blue" %)**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.
--
--
  )))
  [[image:1653298044601-602.png||height="405" width="709"]]
@@ -311,12 +311,12 @@
  * (% style="color:blue" %)**ADDMOD6**(%%): Trigger Mode, Optional, used together with MOD1 ~~ MOD5
++
++
  === 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
--(((
  The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default.
--)))
  [[image:image-20220523174024-3.png]]
@@ -332,6 +332,8 @@
  * DI is for digital input. DIx=1: high or float, DIx=0: low.
  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
++
++
  (% style="color:red" %)**Note: DI3 and DO3 bit are not valid for LT-22222-L**
  For example if payload is: [[image:image-20220523175847-2.png]]
@@ -352,6 +352,8 @@
  * [1] RO1 relay channel is close and the RO1 LED is ON.
  * [0] RO2 relay channel is open and RO2 LED is OFF;
++
++
  **LT22222-L:**
  * [1] DI2 channel is high input and DI2 LED is ON;
@@ -368,12 +368,13 @@
  ** DO1 LED is off in both case
++
++
++
  === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
--(((
  **For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
--)))
  (((
  Total : 11 bytes payload
@@ -405,15 +405,11 @@
  (% class="box infomessage" %)
  (((
  (((
--(((
  **AT+MOD=2**
--)))
--(((
  **ATZ**
  )))
  )))
--)))
  (((
@@ -473,15 +473,11 @@
  (% class="box infomessage" %)
  (((
  (((
--(((
  **AT+MOD=3**
--)))
--(((
  **ATZ**
  )))
  )))
--)))
  (((
  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
@@ -492,13 +492,9 @@
  === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
--(((
  **LT22222-L**: This mode the DI1 is used as a counting pin.
--)))
--(((
  The AVI1 is also used for counting. AVI1 is used to monitor the voltage. It will check the voltage **every 60s**, if voltage is higher or lower than VOLMAX mV, the AVI1 Counting increase 1, so AVI1 counting can be used to measure a machine working hour.
--)))
  [[image:image-20220523181903-8.png]]
@@ -526,17 +526,14 @@
  (% class="box infomessage" %)
  (((
  (((
--(((
  **AT+MOD=4**
--)))
--(((
  **ATZ**
  )))
  )))
--)))
++
  (((
  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
  )))
@@ -590,15 +590,11 @@
  (% class="box infomessage" %)
  (((
  (((
--(((
  **AT+MOD=5**
--)))
--(((
  **ATZ**
  )))
  )))
--)))
  (((
  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
@@ -616,11 +616,16 @@
  * **AT+MOD=1 **            **~-~->**   The normal working mode
  * **AT+ADDMOD6=1**   **~-~->**   Enable trigger
++
++
  LT will keep monitoring AV1/AV2/AC1/AC2 every 5 seconds; LT will send uplink packets in two cases:
 . Periodically uplink (Base on TDC time). Payload is same as the normal MOD (MOD 1 for above command). This uplink uses LoRaWAN (% style="color:#4f81bd" %)**unconfirmed**(%%) data type
 . Trigger uplink when meet the trigger condition. LT will sent two packets in this case, the first uplink use payload specify in this mod (mod=6), the second packets use the normal mod payload(MOD=1 for above settings). Both Uplinks use LoRaWAN (% style="color:#4f81bd" %)**CONFIRMED data type.**
++
++
++
  (% style="color:#037691" %)**AT Command to set Trigger Condition**:
@@ -704,6 +704,8 @@
  * Each bits shows if the corresponding trigger has been configured.
++
++
  **Example:**
  10100000: Means the system has configure to use the trigger: AC1_LOW and AV2_LOW
@@ -716,6 +716,8 @@
  * Each bits shows which status has been trigger on this uplink.
++
++
  **Example:**
  10000000: Means this packet is trigger by AC1_LOW. Means voltage too low.
@@ -728,6 +728,8 @@
  * Each bits shows which status has been trigger on this uplink.
++
++
  **Example:**
  00000111: Means both DI1 and DI2 trigger are enabled and this packet is trigger by DI1.
@@ -746,12 +746,13 @@
++
  === 3.3.7 Payload Decoder ===
  (((
--**Decoder for TTN/loraserver/ChirpStack**:  [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
++**Decoder for TTN/loraserver/ChirpStack**:  [[https:~~/~~/www.dropbox.com/sh/wtrzu7avdtkmn3z/AACK5NwOMkU9jnvf1uCMuqrVa?dl=0>>https://www.dropbox.com/sh/wtrzu7avdtkmn3z/AACK5NwOMkU9jnvf1uCMuqrVa?dl=0]]
  )))
@@ -759,15 +759,11 @@
  == 3.4 Configure LT via AT or Downlink ==
--(((
  User can configure LT I/O Controller via AT Commands or LoRaWAN Downlink Commands
--)))
  (((
--(((
  There are two kinds of Commands:
  )))
--)))
  * (% style="color:#4f81bd" %)**Common Commands**(%%): They should be available for each sensor, 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]]
@@ -775,12 +775,11 @@
++
  === 3.4.1 Common Commands ===
--(((
  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]]
--)))
@@ -926,6 +926,9 @@
  * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 01 ):**
  * **0x09 01 aa bb cc    **     ~/~/ same as AT+TRIG1=aa,0x(bb cc)
++
++
++
  ==== 3.4.2.8 Trigger2 – Set DI2 as trigger ====
@@ -1165,7 +1165,7 @@
  (% style="color:#4f81bd" %)**Third Byte(bb)**(%%): Control Method and Ports status:
--[[image:image-20221008095908-1.png||height="364" width="564"]]
++[[image:image-20220714135731-1.png||height="406" width="627"]]
  (% style="color:#4f81bd" %)**Fourth/Fifth/Sixth/Seventh Bytes(cc)**(%%): Latching time. Unit: ms
@@ -1351,13 +1351,10 @@
  Example：**aa xx xx xx xx**         ~/~/ aa indicates whether the configuration has changed, 00 is yes, 01 is no; xx xx xx xx are the bytes sent.
--
  [[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-20220823173747-6.png?width=1124&height=165&rev=1.1||alt="image-20220823173747-6.png"]]
  For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.
--
--
  [[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-20220823173833-7.png?width=1124&height=149&rev=1.1||alt="image-20220823173833-7.png"]]
  For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.
@@ -1370,7 +1370,7 @@
  * (((
  (% style="color:#037691" %)**Downlink Payload**(%%)**:**
--**26 01  **   ~/~/  Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
++**26 01  **  ~/~/ Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
  )))
@@ -1492,11 +1492,11 @@
  )))
  (((
--[[image:1653968155772-850.png||height="23" width="19"]]**= DI1**+** / 1K.**
++[[image:1653968155772-850.png||height="23" width="19"]]**= DI1**+** / 1K.**
  )))
  (((
--If** DI1+ **= **12v**, the [[image:1653968155772-850.png||height="23" width="19"]]= 12mA , So the LT-22222-L will be able to detect this active signal.
++If** DI1+ **= **12v**, the [[image:1653968155772-850.png||height="23" width="19"]]= 12mA , So the LT-22222-L will be able to detect this active signal.
  )))
  (((
@@ -1591,13 +1591,13 @@
  We take the wind speed sensor as an example for reference only.
--(% style="color:blue" %)**Specifications of the wind speed sensor:**
++**Specifications of the wind speed sensor:**
--**Red:      12~~24v**
++Red:      12~~24v
--**Yellow:  4~~20mA**
++Yellow:  4~~20mA
--**Black:   GND**
++Black:   GND
  **Connection diagram:**
@@ -1635,14 +1635,8 @@
  == 4.1 Access AT Command ==
--(((
  LT supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to LT for using AT command, as below.
--)))
--(((
--
--)))
--
  [[image:1653358238933-385.png]]
@@ -1670,7 +1670,7 @@
  )))
  (((
--AT+<CMD>=?       :  Get the value
++AT+<CMD>=?       : Get the value
  )))
  (((
@@ -1698,11 +1698,11 @@
  )))
  (((
--AT+APPSKEY:  Get or Set the Application Session Key
++AT+APPSKEY: Get or Set the Application Session Key
  )))
  (((
--AT+APPEUI:    Get or Set the Application EUI
++AT+APPEUI: Get or Set the Application EUI
  )))
  (((
@@ -1714,7 +1714,7 @@
  )))
  (((
--AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
++AT+DR: Get or Set the Data Rate. (0-7 corresponding to DR_X)
  )))
  (((
@@ -1750,7 +1750,7 @@
  )))
  (((
--AT+NJM:    Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
++AT+NJM: Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
  )))
  (((
@@ -1794,7 +1794,7 @@
  )))
  (((
--AT+VER:  Get current image version and Frequency Band
++AT+VER: Get current image version and Frequency Band
  )))
  (((
@@ -1802,7 +1802,7 @@
  )))
  (((
--AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
++AT+CFS: Get confirmation status of the last AT+SEND (0-1)
  )))
  (((
@@ -1851,42 +1851,40 @@
  (((
--(((
--(% style="color:blue" %)**If device has not joined network yet:**
++**If device has not joined network yet:**
  )))
--)))
  (((
--(% style="background-color:#dcdcdc" %)**123456**
++(% style="background-color:#dcdcdc" %)123456
  )))
  (((
--(% style="background-color:#dcdcdc" %)**AT+FDR**
++(% style="background-color:#dcdcdc" %)AT+FDR
  )))
  (((
--(% style="background-color:#dcdcdc" %)**123456**
++(% style="background-color:#dcdcdc" %)123456
  )))
  (((
--(% style="background-color:#dcdcdc" %)**AT+NJM=0**
++(% style="background-color:#dcdcdc" %)AT+NJM=0
  )))
  (((
--(% style="background-color:#dcdcdc" %)**ATZ**
++(% style="background-color:#dcdcdc" %)ATZ
  )))
  (((
--(% style="color:blue" %)**If device already joined network:**
++**If device already joined network:**
  )))
  (((
--(% style="background-color:#dcdcdc" %)**AT+NJM=0**
++(% style="background-color:#dcdcdc" %)AT+NJM=0
  )))
  (((
--(% style="background-color:#dcdcdc" %)**ATZ**
++(% style="background-color:#dcdcdc" %)ATZ
  )))
@@ -1896,57 +1896,55 @@
  (((
--(((
--(% style="background-color:#dcdcdc" %)**123456**(%%)        ~/~/ Enter Password to have AT access.
++(% style="background-color:#dcdcdc" %)123456(%%)     Enter Password to have AT access.
  )))
--)))
  (((
--(% style="background-color:#dcdcdc" %)** AT+FDR**(%%)     ~/~/ Reset Parameters to Factory Default, Keys Reserve
++(% style="background-color:#dcdcdc" %) AT+FDR(%%)   Reset Parameters to Factory Default, Keys Reserve
  )))
  (((
--(% style="background-color:#dcdcdc" %)** 123456**(%%)       ~/~/ Enter Password to have AT access.
++(% style="background-color:#dcdcdc" %) 123456(%%)     Enter Password to have AT access.
  )))
  (((
--(% style="background-color:#dcdcdc" %)** AT+CLASS=C**(%%)   ~/~/ Set to work in CLASS C
++(% style="background-color:#dcdcdc" %) AT+CLASS=C(%%) Set to work in CLASS C
  )))
  (((
--(% style="background-color:#dcdcdc" %)** AT+NJM=0**(%%)     ~/~/ Set to ABP mode
++(% style="background-color:#dcdcdc" %) AT+NJM=0(%%)    Set to ABP mode
  )))
  (((
--(% style="background-color:#dcdcdc" %) **AT+ADR=0**(%%)     ~/~/ Set the Adaptive Data Rate Off
++(% style="background-color:#dcdcdc" %) AT+ADR=0(%%)    Set the Adaptive Data Rate Off
  )))
  (((
--(% style="background-color:#dcdcdc" %)** AT+DR=5**(%%)       ~/~/ Set Data Rate
++(% style="background-color:#dcdcdc" %) AT+DR=5(%%)       Set Data Rate
  )))
  (((
--(% style="background-color:#dcdcdc" %)** AT+TDC=60000**(%%)              ~/~/ Set transmit interval to 60 seconds
++(% style="background-color:#dcdcdc" %) AT+TDC=60000(%%)              Set transmit interval to 60 seconds
  )))
  (((
--(% style="background-color:#dcdcdc" %)** AT+CHS=868400000**(%%)     ~/~/ Set transmit frequency to 868.4Mhz
++(% style="background-color:#dcdcdc" %) AT+CHS=868400000(%%)      Set transmit frequency to 868.4Mhz
  )))
  (((
--(% style="background-color:#dcdcdc" %)** AT+RX2FQ=868400000**(%%)    ~/~/ Set RX2Frequency to 868.4Mhz (according to the result from server)
++(% style="background-color:#dcdcdc" %) AT+RX2FQ=868400000(%%)  Set RX2Frequency to 868.4Mhz (according to the result from server)
  )))
  (((
--(% style="background-color:#dcdcdc" %)** AT+RX2DR=5**(%%)** **                   ~/~/ Set RX2DR to match the downlink DR from server. see below
++(% style="background-color:#dcdcdc" %) AT+RX2DR=5(%%)                  Set RX2DR to match the downlink DR from server. see below
  )))
  (((
--(% style="background-color:#dcdcdc" %)** AT+DADDR=26 01 1A F1** (%%)     ~/~/ Set Device Address to 26 01 1A F1, this ID can be found in the LoRa Server portal.
++(% style="background-color:#dcdcdc" %) AT+DADDR=26 01 1A F1 (%%)  Set Device Address to 26 01 1A F1, this ID can be found in the LoRa Server portal.
  )))
  (((
--(% style="background-color:#dcdcdc" %)** ATZ**         (%%)                                 ~/~/ Reset MCU
++(% style="background-color:#dcdcdc" %) ATZ         (%%)                             Reset MCU
  )))
@@ -1956,15 +1956,11 @@
  )))
  (((
--**~1. Make sure the device is set to ABP mode in the IoT Server.**
++(% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
++2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
++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?dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.
++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
--**2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.**
--
--**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?
--dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.**
--
--**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**
--
  )))
@@ -1980,15 +1980,12 @@
  === 4.2.3 Change to Class A ===
--(((
--(% style="color:blue" %)If sensor JOINED:
++If sensor JOINED
++(% style="background-color:#dcdcdc" %)AT+CLASS=A
++ATZ
--(% style="background-color:#dcdcdc" %)**AT+CLASS=A
--ATZ**
--)))
--
  = 5. FAQ =
@@ -2012,10 +2012,8 @@
  (% style="color:blue" %)**Step3**(%%)**:** Open flashloader; choose the correct COM port to update.
--(((
  (% style="color:blue" %)**For LT-22222-L**(%%):
  Hold down the PRO button and then momentarily press the RST reset button and the (% style="color:red" %)**DO1 led**(%%) will change from OFF to ON. When (% style="color:red" %)**DO1 LED**(%%) is on, it means the device is in download mode.
--)))
  )))
@@ -2096,15 +2096,16 @@
  )))
  (((
--(% style="background-color:#dcdcdc" %)**123456** (%%)   :   Enter Password to have AT access.
--(% style="background-color:#dcdcdc" %)**AT+FDR**(%%)   :   Reset Parameters to Factory Default, Keys Reserve
--(% style="background-color:#dcdcdc" %)**AT+NJM=0** (%%) :   Set to ABP mode
--(% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%)  :  Set the Adaptive Data Rate Off
--(% style="background-color:#dcdcdc" %)**AT+DR=5** (%%)    :   Set Data Rate (Set AT+DR=3 for 915 band)
--(% style="background-color:#dcdcdc" %)**AT+TDC=60000 **(%%)   :      Set transmit interval to 60 seconds
--(% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) : Set transmit frequency to 868.4Mhz
--(% style="background-color:#dcdcdc" %)**AT+DADDR=26 01 1A F1**(%%)  :  Set Device Address to 26 01 1A F1
--(% style="background-color:#dcdcdc" %)**ATZ**        (%%)                              :  Reset MCU
++(% style="background-color:#dcdcdc" %)123456 (%%)     Enter Password to have AT access.
++(% style="background-color:#dcdcdc" %)AT+FDR(%%)     Reset Parameters to Factory Default, Keys Reserve
++(% style="background-color:#dcdcdc" %)123456 (%%)     Enter Password to have AT access.
++(% style="background-color:#dcdcdc" %)AT+NJM=0 (%%)    Set to ABP mode
++(% style="background-color:#dcdcdc" %)AT+ADR=0 (%%)    Set the Adaptive Data Rate Off
++(% style="background-color:#dcdcdc" %)AT+DR=5 (%%)      Set Data Rate (Set AT+DR=3 for 915 band)
++(% style="background-color:#dcdcdc" %)AT+TDC=60000 (%%)         Set transmit interval to 60 seconds
++(% style="background-color:#dcdcdc" %)AT+CHS=868400000(%%)  Set transmit frequency to 868.4Mhz
++(% style="background-color:#dcdcdc" %)AT+DADDR=26 01 1A F1(%%)    Set Device Address to 26 01 1A F1
++(% style="background-color:#dcdcdc" %)ATZ        (%%)                              Reset MCU
  )))
@@ -2127,7 +2127,7 @@
  == 5.5 Can i use point to point communication for LT-22222-L? ==
--Yes, please refer [[Point to Point Communication>>doc:Main. Point to Point Communication of LT-22222-L.WebHome]]  ，this is [[firmware>>https://www.dropbox.com/sh/g99v0fxcltn9r1y/AADKXQ2v5ZT-S3sxdmbvE7UAa/LT-22222-L/image?dl=0&subfolder_nav_tracking=1]].
++Yes, please refer [[Point to Point Communication>>doc:Main. Point to Point Communication of LT-22222-L.WebHome]]
@@ -2147,16 +2147,6 @@
--== 5.7 Can i set up LT-22222-L as a NC(Normal Close) Relay? ==
--
--
--LT-22222-L built-in relay is NO (Normal Open). User can use an external relay to achieve Normal Close purpose. Diagram as below:
--
--
--[[image:image-20221006170630-1.png||height="610" width="945"]]
--
--
--
  = 6. Trouble Shooting =
@@ -2220,6 +2220,8 @@
  * (% style="color:red" %)**CN779**(%%):  LT with frequency bands CN779
++
++
  = 8. Packing Info =
@@ -2238,6 +2238,8 @@
  * Weight / pcs : 170g
++
++
  = 9. Support =
@@ -2258,3 +2258,5 @@
  * 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]]
  * [[Datasheet, Document Base>>https://www.dropbox.com/sh/gxxmgks42tqfr3a/AACEdsj_mqzeoTOXARRlwYZ2a?dl=0]]
  * [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]]
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Changes for page LT-22222-L -- LoRa I/O Controller User Manual

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