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4	4	**Contents:**
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	6	+{{toc/}}
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148		-= 2.  Configure LDDS45 to connect to LoRaWAN network =
	149	+= 2.  Configure LDDS75 to connect to LoRaWAN network =
149	149
150	150	== 2.1  How it works ==
151	151
152	152	(((
153		-The LDDS45 is configured as LoRaWAN OTAA Class A mode by default. It has OTAA keys to join LoRaWAN network. To connect a LoRaWAN network, you need to input the OTAA keys in the LoRaWAN IoT server and power on the LDDS45. If there is coverage of the LoRaWAN network, it will automatically join the network via OTAA and start to send the sensor value
	154	+The LDDS75 is configured as LoRaWAN OTAA Class A mode by default. It has OTAA keys to join LoRaWAN network. To connect a LoRaWAN network, you need to input the OTAA keys in the LoRaWAN IoT server and power on the LDDS75. If there is coverage of the LoRaWAN network, it will automatically join the network via OTAA and start to send the sensor value
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157		-In case you can't set the OTAA keys in the LoRaWAN OTAA server, and you have to use the keys from the server, you can [[use AT Commands >>||anchor="H3.A0ConfigureLDDS75viaATCommandorLoRaWANDownlink"]]to set the keys in the LDDS45.
	158	+In case you can't set the OTAA keys in the LoRaWAN OTAA server, and you have to use the keys from the server, you can [[use AT Commands >>||anchor="H3.A0ConfigureLDDS75viaATCommandorLoRaWANDownlink"]]to set the keys in the LDDS75.
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165	165	Following is an example for how to join the [[TTN v3 LoRaWAN Network>>url:https://console.cloud.thethings.network/]]. Below is the network structure; we use the [[LG308>>url:http://www.dragino.com/products/lora/item/140-lg308.html]] as a LoRaWAN gateway in this example.
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170		-[[image:1654913911773-521.png]]
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174		-
	170	+[[image:1654848616367-242.png]]
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182		-(% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS45.
	178	+(% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
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185	185	(((
186		-Each LDDS45 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
	182	+Each LDDS75 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
187	187	)))
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189	189	[[image:image-20220607170145-1.jpeg]]
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211	211	[[image:image-20220610161353-7.png]]
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213		-**Choose LDDS75 instead of LDDS45 is ok. They are of the same payload**
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215		-
216		-
217	217	You can also choose to create the device manually.
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219	219	[[image:image-20220610161538-8.png]]
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229		-(% style="color:blue" %)**Step 2**(%%): Power on LDDS45
	222	+(% style="color:blue" %)**Step 2**(%%): Power on LDDS75
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232	232	Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
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234		-[[image:image-20220611102908-2.png]]
	227	+[[image:image-20220610161724-10.png]]
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238		-(% style="color:blue" %)**Step 3**(%%)**:** The LDDS45 will auto join to the TTN network. After join success, it will start to upload messages to TTN and you can see the messages in the panel.
	231	+(% style="color:blue" %)**Step 3**(%%)**:** The LDDS75 will auto join to the TTN network. After join success, it will start to upload messages to TTN and you can see the messages in the panel.
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241	241	[[image:1654849068701-275.png]]

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