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86	86	* IP66 Waterproof Enclosure
87	87	* 4000mAh or 8500mAh Battery for long term use
88	88
	89	+
	90	+
89	89	== 1.3  Specification ==
90	90
91	91	=== 1.3.1  Rated environmental conditions ===
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108	108
109	109
110	110
111		-(((
112	112	**(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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129	129	* Sewer
130	130	* Bottom water level monitoring
131	131
132		-
133	133	== 1.6  Pin mapping and power on ==
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135	135
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176	176	[[image:image-20220607170145-1.jpeg]]
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178	178
179		-(((
180	180	For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
181		-)))
182	182
183		-(((
184	184	Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
185		-)))
186	186
187		-(((
188	188	**Add APP EUI in the application**
189		-)))
190	190
191	191	[[image:image-20220610161353-4.png]]
192	192
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229	229	== 2.3  ​Uplink Payload ==
230	230
231	231	(((
232		-(((
233	233	LDDS75 will uplink payload via LoRaWAN with below payload format:
234		-)))
235	235
236		-(((
237	237	Uplink payload includes in total 4 bytes.
238	238	Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
239	239	)))
240		-)))
241	241
242	242	(((
243	243
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272	272
273	273	=== 2.3.2  Distance ===
274	274
275		-(((
276	276	Get the distance. Flat object range 280mm - 7500mm.
277		-)))
278	278
279		-(((
280	280	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.**
281		-)))
282	282
283	283
284	284	* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
285	285	* If the sensor value lower than 0x0118 (280mm), the sensor value will be invalid. Since v1.1.4, all value lower than 280mm will be set to 0x0014(20mm) which means the value is invalid.
286	286
287		-
288		-
289	289	=== 2.3.3  Interrupt Pin ===
290	290
291	291	This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H3.3A0SetInterruptMode"]] for the hardware and software set up.
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314	314
315	315	=== 2.3.5  Sensor Flag ===
316	316
317		-(((
318	318	0x01: Detect Ultrasonic Sensor
319		-)))
320	320
321		-(((
322	322	0x00: No Ultrasonic Sensor
323		-)))
324	324
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333	333
334	334	The payload decoder function for TTN V3 is here:
335	335
336		-(((
337	337	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/]]
338		-)))
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1063	1063	* Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1064	1064	* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1065	1065
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1066	1066	= 4.  FAQ =
1067	1067
1068	1068	== 4.1  What is the frequency plan for LDDS75? ==
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1122	1122	* (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1123	1123	* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1124	1124
	1103	+
1125	1125	= 7. ​ Packing Info =
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1127	1127
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1136	1136	* Package Size / pcs : cm
1137	1137	* Weight / pcs : g
1138	1138
	1118	+
1139	1139	= 8.  ​Support =
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1141	1141	* 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.