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110	110	* 1 x Counting Port
111	111	)))
112	112
113		-= 2. Power ON Device =
	113	+2.
114	114
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]]
	119	+[[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
	124	+
	125	+1. Operation Mode
	126	+11. How it works?
	127	+
	128	+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.
	129	+
	130	+
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
	134	+1.
	135	+11. Example to join LoRaWAN network
	136	+
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"]]
	139	+[[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
	148	+[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image006.png]]
150	150
151	151
	151	+
	152	+
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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