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93	93	[[image:image-20220610154839-1.png]]
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95		-**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);**
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	96	+**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)**
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96	96
97		-**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)**
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99	99
100		-
101	101	=== 1.3.2  Effective measurement range Reference beam pattern ===
102	102
103	103	**(1) The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**
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111	111	**(2)** **The object to be tested is a "corrugated cardboard box" perpendicular to the central axis of 0 °, and the length * width is 60cm * 50cm.**
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113	113
114	114	[[image:1654852175653-550.png]](% style="display:none" %) ** **
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173	173	[[image:image-20220607170145-1.jpeg]]
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	178	+(((
176	176	For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
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177	177
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178	178	Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
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179	179
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180	180	**Add APP EUI in the application**
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181	181
182	182	[[image:image-20220610161353-4.png]]
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220	220	== 2.3  ​Uplink Payload ==
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222	222	(((
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223	223	LDDS75 will uplink payload via LoRaWAN with below payload format:
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224	224
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225	225	Uplink payload includes in total 4 bytes.
226	226	Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
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259	259
260	260	=== 2.3.2  Distance ===
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262	262	Get the distance. Flat object range 280mm - 7500mm.
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263	263
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264	264	For example, if the data you get from the register is 0x0B 0x05, the distance between the sensor and the measured object is(% style="color:#4472c4" %)** 0B05(H) = 2821 (D) = 2821 mm.**
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265	265
266	266
267	267	* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
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296	296
297	297	=== 2.3.5  Sensor Flag ===
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299	299	0x01: Detect Ultrasonic Sensor
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301	301	0x00: No Ultrasonic Sensor
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311	311
312	312	The payload decoder function for TTN V3 is here:
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314	314	LDDS75 TTN V3 Payload Decoder: [[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDDS75/Payload_Decoder/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Payload_Decoder/]]
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838	838	* Blink once when device transmit a packet.
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	863	+
841	841	== 2.8  ​Firmware Change Log ==
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844	844	**Firmware download link: **[[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Firmware/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Firmware/]]
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847	847	**Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
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1040	1040	* Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1041	1041	* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1042	1042
1043		-
1044		-
1045	1045	= 4.  FAQ =
1046	1046
1047	1047	== 4.1  What is the frequency plan for LDDS75? ==
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1101	1101	* (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1102	1102	* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1103	1103
1104		-
1105		-
1106	1106	= 7. ​ Packing Info =
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1108	1108
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1117	1117	* Package Size / pcs : cm
1118	1118	* Weight / pcs : g
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1120		-
1121		-
1122	1122	= 8.  ​Support =
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1124	1124	* Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.