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

Last modified by Mengting Qiu on 2025/06/04 18:42

From 50.1 to 51.1 From 68.9 to 68.10

From version 51.1

edited by Xiaoling
on 2022/05/24 10:00

Change comment: Uploaded new attachment "1653357640609-758.png", version {1}

To version 68.9

edited by Xiaoling
on 2022/05/25 14:55

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@@ -45,44 +45,114 @@
  == 1.2  Specifications ==
++(((
  **Hardware System:**
++)))
--* STM32L072CZT6 MCU
--* SX1276/78 Wireless Chip
--* Power Consumption:
--** Idle: 4mA@12v
--** 20dB Transmit: 34mA@12v
++* (((
++STM32L072CZT6 MCU
++)))
++* (((
++SX1276/78 Wireless Chip
++)))
++* (((
++(((
++Power Consumption:
++)))
++* (((
++Idle: 4mA@12v
++)))
++* (((
++20dB Transmit: 34mA@12v
++)))
++)))
++
++(((
  **Interface for Model: LT22222-L:**
++)))
--* 2 x Digital dual direction Input (Detect High/Low signal, Max: 50v, or 220v with optional external resistor)
--* 2 x Digital Output (NPN output. Max pull up voltage 36V,450mA)
--* 2 x Relay Output (5A@250VAC / 30VDC)
--* 2 x 0~~20mA Analog Input (res:0.01mA)
--* 2 x 0~~30V Analog Input (res:0.01v)
--* Power Input 7~~ 24V DC.
++* (((
++2 x Digital dual direction Input (Detect High/Low signal, Max: 50v, or 220v with optional external resistor)
++)))
++* (((
++2 x Digital Output (NPN output. Max pull up voltage 36V,450mA)
++)))
++* (((
++2 x Relay Output (5A@250VAC / 30VDC)
++)))
++* (((
++2 x 0~~20mA Analog Input (res:0.01mA)
++)))
++* (((
++2 x 0~~30V Analog Input (res:0.01v)
++)))
++* (((
++Power Input 7~~ 24V DC.
++)))
++(((
  **LoRa Spec:**
++)))
--* Frequency Range:
--** Band 1 (HF): 862 ~~ 1020 Mhz
--** Band 2 (LF): 410 ~~ 528 Mhz
--* 168 dB maximum link budget.
--* +20 dBm - 100 mW constant RF output vs.
--* +14 dBm high efficiency PA.
--* Programmable bit rate up to 300 kbps.
--* High sensitivity: down to -148 dBm.
--* Bullet-proof front end: IIP3 = -12.5 dBm.
--* Excellent blocking immunity.
--* Low RX current of 10.3 mA, 200 nA register retention.
--* Fully integrated synthesizer with a resolution of 61 Hz.
--* FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
--* Built-in bit synchronizer for clock recovery.
--* Preamble detection.
--* 127 dB Dynamic Range RSSI.
--* Automatic RF Sense and CAD with ultra-fast AFC.
--* Packet engine up to 256 bytes with CRC.
++* (((
++(((
++Frequency Range:
++)))
++* (((
++Band 1 (HF): 862 ~~ 1020 Mhz
++)))
++* (((
++Band 2 (LF): 410 ~~ 528 Mhz
++)))
++)))
++* (((
++168 dB maximum link budget.
++)))
++* (((
+++20 dBm - 100 mW constant RF output vs.
++)))
++* (((
+++14 dBm high efficiency PA.
++)))
++* (((
++Programmable bit rate up to 300 kbps.
++)))
++* (((
++High sensitivity: down to -148 dBm.
++)))
++* (((
++Bullet-proof front end: IIP3 = -12.5 dBm.
++)))
++* (((
++Excellent blocking immunity.
++)))
++* (((
++Low RX current of 10.3 mA, 200 nA register retention.
++)))
++* (((
++Fully integrated synthesizer with a resolution of 61 Hz.
++)))
++* (((
++FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
++)))
++* (((
++Built-in bit synchronizer for clock recovery.
++)))
++* (((
++Preamble detection.
++)))
++* (((
++127 dB Dynamic Range RSSI.
++)))
++* (((
++Automatic RF Sense and CAD with ultra-fast AFC.
++)))
++* (((
++Packet engine up to 256 bytes with CRC.
++)))
++
  == 1.3 Features ==
  * LoRaWAN Class A & Class C protocol
@@ -129,17 +129,22 @@
  == 3.1 How it works? ==
++(((
  The LT is configured as LoRaWAN OTAA Class C mode by default. It has OTAA keys to join network. To connect a local LoRaWAN network, user just need to input the OTAA keys in the network server and power on the LT. It will auto join the network via OTAA. For LT-22222-L, the LED will show the Join status: After power on **TX LED** will fast blink 5 times, LT-22222-L will enter working mode and start to JOIN LoRaWAN network. **TX LED** will be on for 5 seconds after joined in network. When there is message from server, the **RX LED** will be on for 1 second.
++)))
--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:#AT_Command]] to set the keys in the devices.
++(((
++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.
++)))
--3.2 Example to join LoRaWAN network
++== 3.2 Example to join LoRaWAN network ==
++(((
  This chapter shows an example for how to join the TTN LoRaWAN Network. Below is the network structure, we use our LG308 as LoRaWAN gateway here.
++)))
  [[image:image-20220523172350-1.png||height="266" width="864"]]
--
  (((
  The LG308 is already set to connect to [[TTN network >>url:https://www.thethingsnetwork.org/]]. So what we need to do now is only configure register this device to TTN:
  )))
@@ -235,7 +235,9 @@
  **For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
++(((
  Total : 11 bytes payload
++)))
  [[image:image-20220523180452-3.png]]
@@ -249,53 +249,77 @@
  * FIRST: Indicate this is the first packet after join network.
  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
++(((
  (% style="color:red" %)Note: DO3 bit is not valid for LT-22222-L.
++)))
++(((
  **To use counting mode, please run:**
++)))
  (% class="box infomessage" %)
  (((
++(((
  **AT+MOD=2**
  )))
++)))
  (% class="box infomessage" %)
  (((
++(((
  **ATZ**
  )))
++)))
++(((
  (% style="color:#4f81bd" %)**AT Commands for counting:**
++)))
++(((
  **For LT22222-L:**
++)))
  (% class="box infomessage" %)
  (((
++(((
  **AT+TRIG1=0,100 (set DI1 port to trigger on low level, valid signal is 100ms) **
  )))
++)))
  (% class="box infomessage" %)
  (((
++(((
  **AT+TRIG1=1,100(set DI1 port to trigger on high level, valid signal is 100ms ) **
  )))
++)))
  (% class="box infomessage" %)
  (((
++(((
  **AT+TRIG2=0,100 (set DI2 port to trigger on low level, valid signal is 100ms) **
  )))
++)))
  (% class="box infomessage" %)
  (((
++(((
  **AT+TRIG2=1,100 (set DI2 port to trigger on high level, valid signal is 100ms ) **
  )))
++)))
  (% class="box infomessage" %)
  (((
++(((
  **AT+SETCNT=1,60   (Set COUNT1 value to 60)**
  )))
++)))
  (% class="box infomessage" %)
  (((
++(((
  **AT+SETCNT=2,60   (Set COUNT2 value to 60)**
  )))
++)))
  === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
@@ -313,21 +313,31 @@
  * FIRST: Indicate this is the first packet after join network.
  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
++(((
  (% style="color:red" %)Note: DO3 is not valid for LT-22222-L.
++)))
++(((
  **To use counting mode, please run:**
++)))
  (% class="box infomessage" %)
  (((
++(((
  **AT+MOD=3**
  )))
++)))
  (% class="box infomessage" %)
  (((
++(((
  **ATZ**
  )))
++)))
--Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:#COUNT_COMMAND]].
++(((
++Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
++)))
  === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
@@ -347,44 +347,67 @@
  * FIRST: Indicate this is the first packet after join network.
  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
++(((
  (% style="color:red" %)Note: DO3 is not valid for LT-22222-L.
++)))
++(((
  **To use this mode, please run:**
++)))
  (% class="box infomessage" %)
  (((
++(((
  **AT+MOD=4**
  )))
++)))
  (% class="box infomessage" %)
  (((
++(((
  **ATZ**
  )))
++)))
++(((
++
++)))
--Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:#COUNT_COMMAND]].
++(((
++Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
++)))
++(((
  **Plus below command for AVI1 Counting:**
++)))
  (% class="box infomessage" %)
  (((
++(((
  **AT+SETCNT=3,60   (set AVI Count to 60)**
  )))
++)))
  (% class="box infomessage" %)
  (((
++(((
  **AT+VOLMAX=20000   (If AVI1 voltage higher than VOLMAX (20000mV =20v), counter increase 1)**
  )))
++)))
  (% class="box infomessage" %)
  (((
++(((
  **AT+VOLMAX=20000,0   (If AVI1 voltage lower than VOLMAX (20000mV =20v), counter increase 1)**
  )))
++)))
  (% class="box infomessage" %)
  (((
++(((
  **AT+VOLMAX=20000,1   (If AVI1 voltage higer than VOLMAX (20000mV =20v), counter increase 1)**
  )))
++)))
  === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
@@ -398,23 +398,35 @@
  * RO is for relay. ROx=1 : close，ROx=0 always open.
  * FIRST: Indicate this is the first packet after join network.
--* DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
++* (((
++DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
++)))
++(((
  (% style="color:red" %)Note: DO3 is not valid for LT-22222-L.
++)))
++(((
  **To use this mode, please run:**
++)))
  (% class="box infomessage" %)
  (((
++(((
  **AT+MOD=5**
  )))
++)))
  (% class="box infomessage" %)
  (((
++(((
  **ATZ**
  )))
++)))
--Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:#COUNT_COMMAND]].
++(((
++Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
++)))
  === 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
@@ -463,7 +463,7 @@
  **Downlink Command to set Trigger Condition**
--Type Code: 0xAA. Downlink command same as AT Command [[AT+AVLIM, AT+ACLIM>>path:#AT_Trigger]]
++Type Code: 0xAA. Downlink command same as AT Command **AT+AVLIM, AT+ACLIM**
  Format: AA xx yy1 yy1 yy2 yy2 yy3 yy3 yy4 yy4
@@ -483,7 +483,7 @@
  Same as AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
--Example2: AA 02 01 00
++**Example2**: AA 02 01 00
  Same as AT+ DTRI =1,0  (Enable DI1 trigger / disable DI2 trigger)
@@ -556,7 +556,7 @@
  === 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>>http://8.211.40.43:8080/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/]]
++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>>End%20Device%20AT%20Commands%20and%20Downlink%20Command]]
  === 3.4.2 Sensor related commands ===
@@ -822,8 +822,10 @@
  (% class="box infomessage" %)
  (((
++(((
  **0xA9 aa bb cc     ~/~/ Set DO1/DO2/DO3 output with time control**
  )))
++)))
  This is to control the digital output time of DO pin. Include four bytes:
@@ -1026,24 +1026,29 @@
  **0x A7 aa bb cc     ~/~/ same as AT+COUTIME =aa bb cc,**
  )))
++(((
  range: aa bb cc:0 to 16777215,  (unit:second)
++)))
  == 3.5 Integrate with Mydevice ==
  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:
++(((
  **Step 1**: Be sure that your device is programmed and properly connected to the network at this time.
++)))
++(((
  **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:
++)))
  [[image:1653356737703-362.png||height="232" width="732"]]
  [[image:image-20220524094641-11.png||height="390" width="723"]]
--
  [[image:image-20220524094641-12.png||height="402" width="718"]]
--**Step **3: Create an account or log in Mydevices.
++**Step 3**: Create an account or log in Mydevices.
  **Step 4**: Search LT-22222-L(for both LT-22222-L / LT-33222-L) and add DevEUI.(% style="display:none" %)
@@ -1053,7 +1053,6 @@
  After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.
--
  [[image:image-20220524094909-1.png||height="335" width="729"]]
  [[image:image-20220524094909-2.png||height="337" width="729"]]
@@ -1064,10 +1064,6 @@
  [[image:image-20220524094909-5.png||height="341" width="734"]]
--
--
--
--
  == 3.6 Interface Detail ==
  === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
@@ -1083,8 +1083,10 @@
  )))
  (((
++(((
  Internal circuit as below, the NEC2501 is a photocoupler, the Active current (from NEC2501 pin 1 to pin 2 is 1ma and the max current is 50mA. When there is active current pass NEC2501 pin1 to pin2. The DI will be active high
  )))
++)))
  [[image:1653357170703-587.png]]
@@ -1102,7 +1102,7 @@
  So when sensor active, the current between NEC2501 pin1 and pin2 is：
--  //IF//  = DI1+ / 1K.
++[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]**  [[image:image-20220524095628-8.png]]  = DI1+ / 1K.**
  If DI1+ = 12v, the //IF//  = 12mA , So the LT-22222-L will be able to detect this active signal.
@@ -1116,9 +1116,9 @@
  So when sensor active, the current between NEC2501 pin1 and pin2 is:
--[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png]]**    [[image:image-20220524095628-8.png]]= DI1+ / 1K.**
++[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]**    [[image:image-20220524095628-8.png]]= DI1+ / 1K.**
--If **DI1+ = 24v**, the [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png]]**[[image:image-20220524095628-8.png]]** = 24mA , So the LT-22222-L will be able to detect this high active signal.
++If **DI1+ = 24v**, the [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]**[[image:image-20220524095628-8.png]]** = 24mA , So the LT-22222-L will be able to detect this high active signal.
  **Example3**: Connect to a 220v high active sensor.
@@ -1130,9 +1130,9 @@
  So when sensor active, the current between NEC2501 pin1 and pin2 is:
--   [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png]]**[[image:image-20220524095628-8.png]] = DI1+ / 51K.**
++   [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]**[[image:image-20220524095628-8.png]] = DI1+ / 51K.**
--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.
++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.
  === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
@@ -1140,21 +1140,14 @@
  [[image:1653357531600-905.png]]
++=== 3.6.4 Analog Input Interface ===
--
--
--1.
--11.
--111. Analog Input Interface
--
  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:
--AC2 = (IN2 voltage )/12
++**AC2 = (IN2 voltage )/12**
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image024.png]]
++[[image:1653357592296-182.png]]
--
--
  Example to connect a 4~~20mA sensor
  We take the wind speed sensor as an example for reference only.
@@ -1170,423 +1170,620 @@
  Connection diagram:
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image025.jpg]]
++[[image:1653357640609-758.png]]
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image026.png]]
++[[image:1653357648330-671.png||height="155" width="733"]]
++=== 3.6.5 Relay Output ===
--
--1.
--11.
--111. Relay Output
--
++(((
  The LT serial controller has two relay interfaces; each interface uses two pins of the screw terminal. User can connect other device’s Power Line to in serial of RO1_1 and RO_2. Such as below:
++)))
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image027.png]]
++[[image:image-20220524100215-9.png]]
++[[image:image-20220524100215-10.png||height="382" width="723"]]
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image028.png]]
++== 3.7 LEDs Indicators ==
++[[image:image-20220524100748-11.png]]
++= 4. Use AT Command =
++== 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.
--1.
--11. LEDs Indicators
++[[image:1653358238933-385.png]]
--(% border="1" style="background-color:#f7faff" %)
--|**LEDs**|**Feature**
--|**PWR**|Always on if there is power
--|**SYS**|After device is powered on, the SYS will **fast blink in GREEN** for 5 times, means RS485-LN start to join LoRaWAN network. If join success, SYS will be **on GREEN for 5 seconds. **SYS will **blink Blue** on every upload and **blink Green** once receive a downlink message.
--|**TX**|(((
--Device boot: TX blinks 5 times.
--
--Successful join network: TX ON for 5 seconds.
--
--Transmit a LoRa packet: TX blinks once
++(((
++In PC, User needs to set (% style="color:#4f81bd" %)**serial tool**(%%)(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600**(%%) to access to access serial console for LT. The AT commands are disable by default and need to enter password (default:(% style="color:green" %)**123456**)(%%) to active it. As shown below:
  )))
--|**RX**|RX blinks once when receive a packet.
--|**DO1**|
--|**DO2**|
--|**DO3**|
--|**DI2**|(((
--For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
--For LT-33222-L: ON when DI2 is low, LOW when DI2 is high
--)))
--|**DI2**|(((
--For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
++[[image:1653358355238-883.png]]
--For LT-33222-L: ON when DI2 is low, LOW when DI2 is high
++(((
++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/]]
  )))
--|**DI3**|For LT-33222-L ONLY: ON when DI3 is low, LOW when DI3 is high
--|**DI2**|(((
--For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
--For LT-33222-L: ON when DI2 is low, LOW when DI2 is high
++(((
++AT+<CMD>?        : Help on <CMD>
  )))
--|**RO1**|
--|**RO2**|
--1. Use AT Command
--11. 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:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image029.png]]
--
--
--In PC, User needs to set **serial tool**(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to **9600** to access to access serial console for LT. The AT commands are disable by default and need to enter password (default:**123456**) to active it. As shown below:
--
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image030.png]]
--
--
--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/]]
--
--AT+<CMD>?        : Help on <CMD>
--
++(((
  AT+<CMD>         : Run <CMD>
++)))
++(((
  AT+<CMD>=<value> : Set the value
++)))
++(((
  AT+<CMD>=?       : Get the value
++)))
++(((
  ATZ: Trig a reset of the MCU
++)))
++(((
  AT+FDR: Reset Parameters to Factory Default, Keys Reserve
++)))
++(((
  AT+DEUI: Get or Set the Device EUI
++)))
++(((
  AT+DADDR: Get or Set the Device Address
++)))
++(((
  AT+APPKEY: Get or Set the Application Key
++)))
++(((
  AT+NWKSKEY: Get or Set the Network Session Key
++)))
++(((
  AT+APPSKEY: Get or Set the Application Session Key
++)))
++(((
  AT+APPEUI: Get or Set the Application EUI
++)))
++(((
  AT+ADR: Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
++)))
++(((
  AT+TXP: Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
++)))
++(((
  AT+DR: Get or Set the Data Rate. (0-7 corresponding to DR_X)
++)))
++(((
  AT+DCS: Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
++)))
++(((
  AT+PNM: Get or Set the public network mode. (0: off, 1: on)
++)))
++(((
  AT+RX2FQ: Get or Set the Rx2 window frequency
++)))
++(((
  AT+RX2DR: Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
++)))
++(((
  AT+RX1DL: Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
++)))
++(((
  AT+RX2DL: Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
++)))
++(((
  AT+JN1DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
++)))
++(((
  AT+JN2DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
++)))
++(((
  AT+NJM: Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
++)))
++(((
  AT+NWKID: Get or Set the Network ID
++)))
++(((
  AT+FCU: Get or Set the Frame Counter Uplink
++)))
++(((
  AT+FCD: Get or Set the Frame Counter Downlink
++)))
++(((
  AT+CLASS: Get or Set the Device Class
++)))
++(((
  AT+JOIN: Join network
++)))
++(((
  AT+NJS: Get OTAA Join Status
++)))
++(((
  AT+SENDB: Send hexadecimal data along with the application port
++)))
++(((
  AT+SEND: Send text data along with the application port
++)))
++(((
  AT+RECVB: Print last received data in binary format (with hexadecimal values)
++)))
++(((
  AT+RECV: Print last received data in raw format
++)))
++(((
  AT+VER: Get current image version and Frequency Band
++)))
++(((
  AT+CFM: Get or Set the confirmation mode (0-1)
++)))
++(((
  AT+CFS: Get confirmation status of the last AT+SEND (0-1)
++)))
++(((
  AT+SNR: Get the SNR of the last received packet
++)))
++(((
  AT+RSSI: Get the RSSI of the last received packet
++)))
++(((
  AT+TDC: Get or set the application data transmission interval in ms
++)))
++(((
  AT+PORT: Get or set the application port
++)))
++(((
  AT+DISAT: Disable AT commands
++)))
++(((
  AT+PWORD: Set password, max 9 digits
++)))
++(((
  AT+CHS: Get or Set Frequency (Unit: Hz) for Single Channel Mode
++)))
++(((
  AT+CHE: Get or Set eight channels mode, Only for US915, AU915, CN470
++)))
++(((
  AT+CFG: Print all settings
++)))
++== 4.2 Common AT Command Sequence ==
++=== 4.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
--1.
--11. Common AT Command Sequence
--111. Multi-channel ABP mode (Use with SX1301/LG308)
--
++(((
  If device has not joined network yet:
++)))
--123456
++(((
++(% style="background-color:#dcdcdc" %)123456
++)))
--AT+FDR
++(((
++(% style="background-color:#dcdcdc" %)AT+FDR
++)))
--123456
++(((
++(% style="background-color:#dcdcdc" %)123456
++)))
--AT+NJM=0
++(((
++(% style="background-color:#dcdcdc" %)AT+NJM=0
++)))
--ATZ
++(((
++(% style="background-color:#dcdcdc" %)ATZ
++)))
++(((
  If device already joined network:
++)))
--AT+NJM=0
++(((
++(% style="background-color:#dcdcdc" %)AT+NJM=0
++)))
--ATZ
++(((
++(% style="background-color:#dcdcdc" %)ATZ
++)))
--1.
--11.
--111. Single-channel ABP mode (Use with LG01/LG02)
++=== 4.2.2 Single-channel ABP mode (Use with LG01/LG02) ===
--123456   Enter Password to have AT access.
++(((
++(% style="background-color:#dcdcdc" %) 123456(%%)   Enter Password to have AT access.
++)))
--AT+FDR   Reset Parameters to Factory Default, Keys Reserve
++(((
++(% style="background-color:#dcdcdc" %) AT+FDR(%%)   Reset Parameters to Factory Default, Keys Reserve
++)))
--123456   Enter Password to have AT access.
++(((
++(% style="background-color:#dcdcdc" %) 123456(%%)   Enter Password to have AT access.
++)))
--AT+CLASS=C Set to work in CLASS C
++(((
++(% style="background-color:#dcdcdc" %) AT+CLASS=C(%%) Set to work in CLASS C
++)))
--AT+NJM=0 Set to ABP mode
++(((
++(% style="background-color:#dcdcdc" %) AT+NJM=0(%%) Set to ABP mode
++)))
--AT+ADR=0 Set the Adaptive Data Rate Off
++(((
++(% style="background-color:#dcdcdc" %) AT+ADR=0(%%) Set the Adaptive Data Rate Off
++)))
--AT+DR=5  Set Data Rate
++(((
++(% style="background-color:#dcdcdc" %) AT+DR=5(%%)  Set Data Rate
++)))
--AT+TDC=60000  Set transmit interval to 60 seconds
++(((
++(% style="background-color:#dcdcdc" %) AT+TDC=60000(%%)  Set transmit interval to 60 seconds
++)))
--AT+CHS=868400000 Set transmit frequency to 868.4Mhz
++(((
++(% style="background-color:#dcdcdc" %) AT+CHS=868400000(%%) Set transmit frequency to 868.4Mhz
++)))
--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)
++)))
--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
++)))
--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.
++)))
--ATZ          Reset MCU
++(((
++(% style="background-color:#dcdcdc" %) ATZ         (%%) Reset MCU
++)))
--**Note:**
++(((
++(% style="color:red" %)**Note:**
++)))
--1. Make sure the device is set to ABP mode in the IoT Server.
--1. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
--1. 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.
--1. 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
++(((
++(% 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
++)))
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image031.png]]
++(((
++[[image:1653359097980-169.png||height="188" width="729"]]
++)))
++(((
++
++)))
--1.
--11.
--111. Change to Class A
++=== 4.2.3 Change to Class A ===
  If sensor JOINED
--
--AT+CLASS=A
--
++(% style="background-color:#dcdcdc" %)AT+CLASS=A
  ATZ
++= 5. FAQ =
++== 5.1 How to upgrade the image? ==
--
--
--1. FAQ
--
--1.
--11. How to upgrade the image?
--
  The LT LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to LT to:
  * Support new features
  * For bug fix
  * Change LoRaWAN bands.
--
  Below shows the hardware connection for how to upload an image to the LT:
++* [[image:1653359603330-121.png]]
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image029.png]]
--
--
++(((
  **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]].
--
  **Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
--
  **Step3: **Open flashloader; choose the correct COM port to update.
--
--**For LT-33222-L**:
--
--Hold down the PRO button and then momentarily press the RST reset button and the **DO2 led** will change from OFF to ON. When **DO2 LED** is on, it means the device is in download mode.
--
  **For LT-22222-L**:
--
  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.
--
--
--
--|(((
--Board detected
  )))
--|(((
--
--)))
++  [[image:image-20220524103407-12.png]]
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image032.png]]            [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image033.png]]
++[[image:image-20220524103429-13.png]]
++[[image:image-20220524104033-15.png]]
++(% style="color:red" %)**Notice**(%%): In case user has lost the program cable. User can hand made one from a 3.5mm cable. The pin mapping is:
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image034.png]]           [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image035.png]]
++[[image:1653360054704-518.png||height="186" width="745"]]
++(((
++(((
++== 5.2 How to change the LoRa Frequency Bands/Region? ==
++)))
++)))
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image036.png]]   [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image037.png]]
++(((
++User can follow the introduction for [[how to upgrade image>>||anchor="H5.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
++)))
++(((
++== 5.3 How to set up LT to work with Single Channel Gateway such as LG01/LG02? ==
++)))
--**Notice**: In case user has lost the program cable. User can hand made one from a 3.5mm cable. The pin mapping is:
--
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image038.png]]
--
--
--1.
--11. How to change the LoRa Frequency Bands/Region?
--
--User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
--
--
--1.
--11. How to set up LT to work with Single Channel Gateway such as LG01/LG02?
--
++(((
++(((
  In this case, users need to set LT-33222-L to work in ABP mode & transmit in only one frequency.
++)))
++)))
++(((
++(((
  Assume we have a LG02 working in the frequency 868400000 now , below is the step.
++)))
++)))
++(((
++(% style="color:#4f81bd" %)**Step1**(%%): Log in TTN, Create an ABP device in the application and input the network session key (NETSKEY), app session key (APPSKEY) from the device.
++)))
--**Step1**: Log in TTN, Create an ABP device in the application and input the network session key (NETSKEY), app session key (APPSKEY) from the device.
++(((
++[[image:1653360231087-571.png||height="401" width="727"]]
++)))
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image039.png]]
++(((
++(% 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.
++)))
--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.
++(((
++(% style="color:#4f81bd" %)**Step2**(%%)**: **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands:
++)))
++(((
++(% 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
++)))
--**Step2: **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands:
++(((
++As shown in below:
++)))
--123456   Enter Password to have AT access.
++[[image:1653360498588-932.png||height="485" width="726"]]
--AT+FDR   Reset Parameters to Factory Default, Keys Reserve
++== 5.4 Can I see counting event in Serial? ==
--123456   Enter Password to have AT access.
++(((
++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.
++)))
--AT+NJM=0 Set to ABP mode
++(((
++= 6. Trouble Shooting =
++)))
--AT+ADR=0 Set the Adaptive Data Rate Off
++(((
++(((
++== 6.1 Downlink doesn’t work, how to solve it? ==
++)))
++)))
--AT+DR=5  Set Data Rate (Set AT+DR=3 for 915 band)
++(((
++Please see this link for how to debug: [[see how it work>>LoRaWAN_Communication_Debug||anchor="H5.1Howitwork:NO"]]
--AT+TDC=60000  Set transmit interval to 60 seconds
++[[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]]
--AT+CHS=868400000 Set transmit frequency to 868.4Mhz
++
++)))
--AT+DADDR=26 01 1A F1 Set Device Address to 26 01 1A F1
++(((
++== 6.2 Have trouble to upload image. ==
++)))
--ATZ                Reset MCU
++(((
++See this link for trouble shooting:
--As shown in below:
++[[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/]]
++)))
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image040.png]]
++(((
++
++)))
++(((
++== 6.3 Why I can’t join TTN in US915 /AU915 bands? ==
++)))
++(((
++It might be about the channels mapping. Please see this link for detail:
--1.
--11. Can I see counting event in Serial?
++[[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]]
++)))
--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.
++(((
++
++)))
++(((
++= 7. Order Info =
++)))
++(((
++(((
++(% style="color:#4f81bd" %)**LT-22222-L-XXX:**
++)))
++)))
++(((
++(((
++(% style="color:#4f81bd" %)**XXX:**
++)))
++)))
--1. Trouble Shooting
--11. Downlink doesn’t work, how to solve it?
++(((
++* (((
++(% style="color:#4f81bd" %)**EU433**(%%): LT with frequency bands EU433
++)))
++)))
--Please see this link for how to debug:
++(((
++* (((
++(% style="color:#4f81bd" %)**EU868**(%%): LT with frequency bands EU868
++)))
++)))
--[[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]]
++(((
++* (((
++(% style="color:#4f81bd" %)**KR920**(%%): LT with frequency bands KR920
++)))
++)))
++(((
++* (((
++(% style="color:#4f81bd" %)**CN470**(%%): LT with frequency bands CN470
++)))
++)))
--1.
--11. Have trouble to upload image.
++(((
++* (((
++(% style="color:#4f81bd" %)**AS923**(%%): LT with frequency bands AS923
++)))
++)))
--See this link for trouble shooting:
++(((
++* (((
++(% style="color:#4f81bd" %)**AU915**(%%): LT with frequency bands AU915
++)))
++)))
--[[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]]
++(((
++* (((
++(% style="color:#4f81bd" %)**US915**(%%): LT with frequency bands US915
++)))
++)))
++(((
++* (((
++(% style="color:#4f81bd" %)**IN865**(%%): LT with frequency bands IN865
++)))
++)))
--1.
--11. Why I can’t join TTN in US915 /AU915 bands?
++(((
++* (((
++(% style="color:#4f81bd" %)**CN779**(%%): LT with frequency bands CN779
++)))
--It might be about the channels mapping. Please see this link for detail:
++= 8. Packing Info =
++)))
--[[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]]
--
--
--
--
--1. Order Info
--
--**For LT-33222-L-XXX or LT-22222-L-XXX:**
--
--**XXX:**
--
--* **EU433**: LT with frequency bands EU433
--* **EU868**: LT with frequency bands EU868
--* **KR920**: LT with frequency bands KR920
--* **CN470**: LT with frequency bands CN470
--* **AS923**: LT with frequency bands AS923
--* **AU915**: LT with frequency bands AU915
--* **US915**: LT with frequency bands US915
--* **IN865**: LT with frequency bands IN865
--* **CN779**: LT with frequency bands CN779
--
--1. Packing Info
--
++(((
++(((
  **Package Includes**:
++)))
++)))
--* LT I/O Controller x 1
++(((
++(((
++* LT-22222-L I/O Controller x 1
  * Stick Antenna for LoRa RF part x 1
  * Bracket for controller x1
  * Program cable x 1
++)))
++)))
++(((
++(((
  **Dimension and weight**:
++)))
++)))
++(((
++(((
  * Device Size: 13.5 x 7 x 3 cm
  * Device Weight: 105g
  * Package Size / pcs : 14.5 x 8 x 5 cm
  * Weight / pcs : 170g
++)))
++)))
--1. Support
++(((
++= 9. Support =
++)))
--* 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.
--* 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 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.
++)))
++)))
++* (((
++(((
++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]]
++(((
++(((
++         [[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]]
++)))
++
++(((
++= 10. Reference =
++
++* Product Page:
++
++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]]
++
++* [[Image Download>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]]
++* [[AT Command Manual>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]]
++* [[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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