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76	76	== ​1.2  Features ==
77	77
78	78	* LoRaWAN 1.0.3 Class A
79		-* Ultra low power consumption
	79	+* Ultra-low power consumption
80	80	* Distance Detection by Ultrasonic technology
81		-* Flat object range 280mm - 7500mm
	81	+* Flat object range 30mm - 4500mm
82	82	* Accuracy: ±(1cm+S*0.3%) (S: Distance)
	83	+* Measure Angle: 60°
83	83	* Cable Length : 25cm
84	84	* Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
85	85	* AT Commands to change parameters
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86	86	* Uplink on periodically
87	87	* Downlink to change configure
88	88	* IP66 Waterproof Enclosure
89		-* 4000mAh or 8500mAh Battery for long term use
	90	+* 8500mAh Battery for long term use
90	90
91	91
92	92
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96	96
97	97	[[image:image-20220610154839-1.png]]
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	100	+
99	99	(((
100		-**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);  b. When the ambient temperature is 40-50 ℃, the highest humidity is the highest humidity in the natural world at the current temperature (no condensation)**
	102	+**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);  **
	103	+
	104	+**~ b. When the ambient temperature is 40-50 ℃, the highest humidity is the highest humidity in the natural world at the current temperature (no condensation)**
101	101	)))
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103	103
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145		-= 2.  Configure LDDS75 to connect to LoRaWAN network =
	149	+= 2.  Configure LDDS45 to connect to LoRaWAN network =
146	146
147	147	== 2.1  How it works ==
148	148
149	149	(((
150		-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
	154	+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
151	151	)))
152	152
153	153	(((
154		-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.
	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 LDDS45.
155	155	)))
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160	160
161	161	(((
162	162	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.
	167	+
	168	+
163	163	)))
164	164
	171	+[[image:1654913911773-521.png]]
	172	+
	173	+
165	165	(((
166		-[[image:1654848616367-242.png]]
	175	+
167	167	)))
168	168
169	169	(((
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171	171	)))
172	172
173	173	(((
174		-(% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
	183	+(% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS45.
175	175	)))
176	176
177	177	(((
178		-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	+Each LDDS45 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
179	179	)))
180	180
181	181	[[image:image-20220607170145-1.jpeg]]
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202	202
203	203	[[image:image-20220610161353-7.png]]
204	204
	214	+Choose LDDS75 instead of LDDS45 is ok. They are of the same payload
205	205
	216	+
	217	+
206	206	You can also choose to create the device manually.
207	207
208	208	[[image:image-20220610161538-8.png]]

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