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10 10  
11 11  == 1.1 What is LT Series I/O Controller ==
12 12  
13 +(((
13 13  The Dragino LT series I/O Modules are Long Range LoRaWAN I/O Controller. It contains different I/O Interfaces such as: analog current Input, analog voltage input, relay output, digital input and digital output etc. The LT I/O Modules are designed to simplify the installation of I/O monitoring.
15 +)))
14 14  
17 +(((
15 15  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.
19 +)))
16 16  
21 +(((
17 17  The LT I/O Controllers is aiming to provide a simple plug and play, low cost installation by using LoRaWAN wireless technology.
23 +)))
18 18  
25 +(((
19 19  The use environment includes:
27 +)))
20 20  
29 +(((
21 21  1) If user’s area has LoRaWAN service coverage, they can just install the I/O controller and configure it to connect the LoRaWAN provider via wireless.
31 +)))
22 22  
33 +(((
23 23  2) User can set up a LoRaWAN gateway locally and configure the controller to connect to the gateway via wireless.
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24 24  
37 +(((
38 +[[image:1653295757274-912.png]]
39 +)))
25 25  
26 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image001.png]]
41 +== 1.2  Specifications ==
27 27  
28 -
29 -
30 -
31 -1.
32 -11. Specifications
33 -
34 34  **Hardware System:**
35 35  
36 36  * STM32L072CZT6 MCU
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37 37  * SX1276/78 Wireless Chip
38 38  * Power Consumption:
39 39  ** Idle: 4mA@12v
40 -
41 -*
42 42  ** 20dB Transmit: 34mA@12v
43 43  
44 -
45 -**Interface for Model: LT33222-L:**
46 -
47 -* 3 x Digital Input ( Detect Low signal , Max, 6V)
48 -* 3 x Digital Output (NPN output. Max pull up voltage 36V,450mA)
49 -* 2 x Relay Output (5A@250VAC / 30VDC)
50 -* 2 x 0~~20mA Analog Input (res:0.01mA)
51 -* 2 x 0~~30V Analog Input (res:0.01v)
52 -* Power Input 7~~ 24V DC.
53 -*
54 -
55 55  **Interface for Model: LT22222-L:**
56 56  
57 57  * 2 x Digital dual direction Input (Detect High/Low signal, Max: 50v, or 220v with optional external resistor)
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61 61  * 2 x 0~~30V Analog Input (res:0.01v)
62 62  * Power Input 7~~ 24V DC.
63 63  
64 -
65 65  **LoRa Spec:**
66 66  
67 67  * Frequency Range:
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83 83  * Automatic RF Sense and CAD with ultra-fast AFC.
84 84  * Packet engine up to 256 bytes with CRC.
85 85  
81 +== 1.3 Features ==
86 86  
87 -*
88 -*1. Features
89 89  * LoRaWAN Class A & Class C protocol
90 90  * Optional Customized LoRa Protocol
91 91  * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/RU864/IN865
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94 94  * Firmware upgradable via program port
95 95  * Counting
96 96  
91 +== 1.4  Applications ==
97 97  
98 -
99 -*
100 -*1. Applications
101 101  * Smart Buildings & Home Automation
102 102  * Logistics and Supply Chain Management
103 103  * Smart Metering
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105 105  * Smart Cities
106 106  * Smart Factory
107 107  
100 +== 1.5 Hardware Variants ==
108 108  
109 -
110 -
111 -1.
112 -11. Hardware Variants
113 -
114 -
115 -|**Model**|**Photo**|**Description**
116 -|**LT33222-L**|[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image002.jpg]]|(((
117 -* 3 x Digital Input
118 -* 3 x Digital Output
119 -* 2 x Relay Output (5A@250VAC / 30VDC)
120 -* 2 x 0~~20mA Analog Input (res:0.01mA)
121 -* 2 x 0~~30V Analog Input (res:0.01v)
122 -* 1 x Counting Port
123 -)))
124 -
125 -
126 -|**Model**|**Photo**|**Description**
127 -|**LT22222-L**|[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image003.jpg]]|(((
102 +(% border="1" style="background-color:#f7faff; width:540px" %)
103 +|(% style="width:103px" %)**Model**|(% style="width:131px" %)**Photo**|(% style="width:334px" %)**Description**
104 +|(% style="width:103px" %)**LT22222-L**|(% style="width:131px" %)[[image:1653296302983-697.png]]|(% style="width:334px" %)(((
128 128  * 2 x Digital Input (Bi-direction)
129 129  * 2 x Digital Output
130 130  * 2 x Relay Output (5A@250VAC / 30VDC)
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133 133  * 1 x Counting Port
134 134  )))
135 135  
113 += 2. Power ON Device =
136 136  
137 -
138 -1.
139 -11. Firmware Change log
140 -
141 -[[**LT Image files**>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]]**:**
142 -
143 -http:~/~/www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/
144 -
145 -
146 -**Change log:**
147 -
148 -[[http:~~/~~/www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/&file=changelog>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/&file=changelog]]
149 -
150 -
151 -
152 -1. Power ON Device
153 -
154 -
155 155  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.
156 156  
117 +(((
157 157  PWR will on when device is properly powered.
119 +)))
158 158  
159 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image004.png]]
121 +[[image:1653297104069-180.png]]
160 160  
123 += 3. Operation Mode =
161 161  
125 +== 3.1 How it works? ==
162 162  
127 +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. 
163 163  
164 -
165 -1. Operation Mode
166 -11. How it works?
167 -
168 -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. 
169 -
170 -
171 171  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.
172 172  
131 +3.2 Example to join LoRaWAN network
173 173  
174 -1.
175 -11. Example to join LoRaWAN network
176 -
177 177  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.
178 178  
179 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image005.png]]
135 +[[image:image-20220523172350-1.png||height="266" width="864"]]
180 180  
181 181  
138 +(((
182 182  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:
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183 183  
142 +(((
184 184  **Step 1**: Create a device in TTN with the OTAA keys from LT IO controller.
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185 185  
146 +(((
186 186  Each LT is shipped with a sticker with the default device EUI as below:
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187 187  
188 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image006.png]]
150 +[[image:1653297924498-393.png]]
189 189  
190 -
191 -
192 -
193 193  Input these keys in the LoRaWAN Server portal. Below is TTN screen shot:
194 194  
195 195  Add APP EUI in the application.
196 196  
197 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image007.png]]
156 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image007.png]][[image:1653297955910-247.png||height="321" width="716"]]
198 198  
199 199  Add APP KEY and DEV EUI
200 200  
160 +[[image:1653298023685-319.png]]
161 +
201 201  [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image008.png]]
202 202  
203 203  **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.
204 204  
166 +[[image:1653298044601-602.png]]
167 +
205 205  [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image009.png]]
206 206  
207 207  
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