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10 10  
11 11  == 1.1 What is LT Series I/O Controller ==
12 12  
13 -(((
14 14  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 -)))
16 16  
17 -(((
18 18  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 -)))
20 20  
21 -(((
22 22  The LT I/O Controllers is aiming to provide a simple plug and play, low cost installation by using LoRaWAN wireless technology.
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24 24  
25 -(((
26 26  The use environment includes:
27 -)))
28 28  
29 -(((
30 30  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 -)))
32 32  
33 -(((
34 34  2) User can set up a LoRaWAN gateway locally and configure the controller to connect to the gateway via wireless.
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36 36  
37 -(((
38 -[[image:1653295757274-912.png]]
39 -)))
40 40  
41 -== 1.2  Specifications ==
26 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image001.png]]
42 42  
28 +
29 +
30 +
31 +1.
32 +11. Specifications
33 +
43 43  **Hardware System:**
44 44  
45 45  * STM32L072CZT6 MCU
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46 46  * SX1276/78 Wireless Chip
47 47  * Power Consumption:
48 48  ** Idle: 4mA@12v
40 +
41 +*
49 49  ** 20dB Transmit: 34mA@12v
50 50  
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 +
51 51  **Interface for Model: LT22222-L:**
52 52  
53 53  * 2 x Digital dual direction Input (Detect High/Low signal, Max: 50v, or 220v with optional external resistor)
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57 57  * 2 x 0~~30V Analog Input (res:0.01v)
58 58  * Power Input 7~~ 24V DC.
59 59  
64 +
60 60  **LoRa Spec:**
61 61  
62 62  * Frequency Range:
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78 78  * Automatic RF Sense and CAD with ultra-fast AFC.
79 79  * Packet engine up to 256 bytes with CRC.
80 80  
81 -== 1.3 Features ==
82 82  
87 +*
88 +*1. Features
83 83  * LoRaWAN Class A & Class C protocol
84 84  * Optional Customized LoRa Protocol
85 85  * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/RU864/IN865
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88 88  * Firmware upgradable via program port
89 89  * Counting
90 90  
91 -== 1.4  Applications ==
92 92  
98 +
99 +*
100 +*1. Applications
93 93  * Smart Buildings & Home Automation
94 94  * Logistics and Supply Chain Management
95 95  * Smart Metering
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97 97  * Smart Cities
98 98  * Smart Factory
99 99  
100 -== 1.5 Hardware Variants ==
101 101  
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" %)(((
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]]|(((
105 105  * 2 x Digital Input (Bi-direction)
106 106  * 2 x Digital Output
107 107  * 2 x Relay Output (5A@250VAC / 30VDC)
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110 110  * 1 x Counting Port
111 111  )))
112 112  
113 -= 2. Power ON Device =
114 114  
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 +
115 115  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.
116 116  
117 -(((
118 118  PWR will on when device is properly powered.
119 -)))
120 120  
121 -[[image:1653297104069-180.png]]
159 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image004.png]]
122 122  
123 -= 3. Operation Mode =
124 124  
125 -== 3.1 How it works? ==
126 126  
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. 
128 128  
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 +
129 129  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.
130 130  
131 -3.2 Example to join LoRaWAN network
132 132  
174 +1.
175 +11. Example to join LoRaWAN network
176 +
133 133  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.
134 134  
135 -[[image:image-20220523172350-1.png||height="266" width="864"]]
179 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image005.png]]
136 136  
137 137  
138 -(((
139 139  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:
140 -)))
141 141  
142 -(((
143 143  **Step 1**: Create a device in TTN with the OTAA keys from LT IO controller.
144 -)))
145 145  
146 -(((
147 147  Each LT is shipped with a sticker with the default device EUI as below:
148 -)))
149 149  
188 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image006.png]]
150 150  
151 151  
191 +
192 +
152 152  Input these keys in the LoRaWAN Server portal. Below is TTN screen shot:
153 153  
154 154  Add APP EUI in the application.
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