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86	86	* IP66 Waterproof Enclosure
87	87	* 4000mAh or 8500mAh Battery for long term use
88	88
89		-
90		-
91	91	== 1.3  Specification ==
92	92
93	93	=== 1.3.1  Rated environmental conditions ===
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95	95	[[image:image-20220610154839-1.png]]
96	96
97	97	(((
98		-**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)**
	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)**
99	99	)))
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110	110
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	111	+(((
113	113	**(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.**
	113	+)))
114	114
115	115
116	116	[[image:1654852175653-550.png]](% style="display:none" %) ** **
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175	175	[[image:image-20220607170145-1.jpeg]]
176	176
177	177
	178	+(((
178	178	For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
	180	+)))
179	179
	182	+(((
180	180	Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
	184	+)))
181	181
	186	+(((
182	182	**Add APP EUI in the application**
	188	+)))
183	183
184	184	[[image:image-20220610161353-4.png]]
185	185
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222	222	== 2.3  ​Uplink Payload ==
223	223
224	224	(((
	231	+(((
225	225	LDDS75 will uplink payload via LoRaWAN with below payload format:
	233	+)))
226	226
	235	+(((
227	227	Uplink payload includes in total 4 bytes.
228	228	Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
229	229	)))
	239	+)))
230	230
231	231	(((
232	232
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261	261
262	262	=== 2.3.2  Distance ===
263	263
	274	+(((
264	264	Get the distance. Flat object range 280mm - 7500mm.
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265	265
	278	+(((
266	266	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.**
	280	+)))
267	267
268	268
269	269	* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
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297	297
298	298	=== 2.3.5  Sensor Flag ===
299	299
	314	+(((
300	300	0x01: Detect Ultrasonic Sensor
	316	+)))
301	301
	318	+(((
302	302	0x00: No Ultrasonic Sensor
	320	+)))
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312	312
313	313	The payload decoder function for TTN V3 is here:
314	314
	333	+(((
315	315	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	* Solid ON for 5 seconds once device successful Join the network.
839	839	* Blink once when device transmit a packet.
840	840
	861	+
841	841	== 2.8  ​Firmware Change Log ==
842	842
843	843
	865	+(((
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/]]
	867	+)))
845	845
	869	+(((
	870	+
	871	+)))
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	873	+(((
847	847	**Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
	875	+)))
848	848
849	849
850	850
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988	988	[[image:image-20220610172924-5.png]]
989	989
990	990
	1019	+(((
991	991	In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LDDS75. LDDS75 will output system info once power on as below:
	1021	+)))
992	992
993	993
994	994	[[image:image-20220610172924-6.png||height="601" width="860"]]
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1012	1012	(((
1013	1013	Format: Command Code (0x01) followed by 3 bytes time value.
1014	1014
	1045	+(((
1015	1015	If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
	1047	+)))
1016	1016
1017	1017	* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1018	1018	* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
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1035	1035
1036	1036	Format: Command Code (0x06) followed by 3 bytes.
1037	1037
	1070	+(((
1038	1038	This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
	1072	+)))
1039	1039
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	1043
	1078	+
1044	1044	= 4.  FAQ =
1045	1045
1046	1046	== 4.1  What is the frequency plan for LDDS75? ==
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1101	1101	* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1102	1102
1103	1103
	1139	+
1104	1104	= 7. ​ Packing Info =
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1116	1116	* Weight / pcs : g
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	1155	+
1119	1119	= 8.  ​Support =
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1121	1121	* 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.