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87	87	* 4000mAh or 8500mAh Battery for long term use
88	88
89	89
	90	+
90	90	== 1.3  Specification ==
91	91
92	92	=== 1.3.1  Rated environmental conditions ===
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109	109
110	110
111	111
112		-(((
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.**
114		-)))
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116	116
117	117	[[image:1654852175653-550.png]](% style="display:none" %) ** **
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130	130	* Sewer
131	131	* Bottom water level monitoring
132	132
133		-
134		-
135	135	== 1.6  Pin mapping and power on ==
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137	137
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178	178	[[image:image-20220607170145-1.jpeg]]
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180	180
181		-(((
182	182	For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
183		-)))
184	184
185		-(((
186	186	Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
187		-)))
188	188
189		-(((
190	190	**Add APP EUI in the application**
191		-)))
192	192
193	193	[[image:image-20220610161353-4.png]]
194	194
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231	231	== 2.3  ​Uplink Payload ==
232	232
233	233	(((
234		-(((
235	235	LDDS75 will uplink payload via LoRaWAN with below payload format:
236		-)))
237	237
238		-(((
239	239	Uplink payload includes in total 4 bytes.
240	240	Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
241	241	)))
242		-)))
243	243
244	244	(((
245	245
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274	274
275	275	=== 2.3.2  Distance ===
276	276
277		-(((
278	278	Get the distance. Flat object range 280mm - 7500mm.
279		-)))
280	280
281		-(((
282	282	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.**
283		-)))
284	284
285	285
286	286	* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
287	287	* 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.
288	288
289		-
290		-
291		-
292	292	=== 2.3.3  Interrupt Pin ===
293	293
294	294	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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1060	1060	* Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1061	1061	* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1062	1062
	1043	+
1063	1063	= 4.  FAQ =
1064	1064
1065	1065	== 4.1  What is the frequency plan for LDDS75? ==
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1119	1119	* (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1120	1120	* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1121	1121
	1103	+
1122	1122	= 7. ​ Packing Info =
1123	1123
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1133	1133	* Package Size / pcs : cm
1134	1134	* Weight / pcs : g
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	1118	+
1136	1136	= 8.  ​Support =
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1138	1138	* 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.