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87	87	* 4000mAh or 8500mAh Battery for long term use
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90		-
91		-
92	92	== 1.3  Specification ==
93	93
94	94	=== 1.3.1  Rated environmental conditions ===
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95	95
96	96	[[image:image-20220610154839-1.png]]
97	97
98		-**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);**
	96	+(((
	97	+**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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99	99
100		-**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
102	102
103		-
104	104	=== 1.3.2  Effective measurement range Reference beam pattern ===
105	105
106	106	**(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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113	113
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114	114	**(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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116	116
117	117	[[image:1654852175653-550.png]](% style="display:none" %) ** **
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130	130	* Sewer
131	131	* Bottom water level monitoring
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	134	+
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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	181	+(((
179	179	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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180	180
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181	181	Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
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182	182
	189	+(((
183	183	**Add APP EUI in the application**
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184	184
185	185	[[image:image-20220610161353-4.png]]
186	186
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270	270	* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
271	271	* 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.
272	272
273		-
274	274	=== 2.3.3  Interrupt Pin ===
275	275
276	276	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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840	840	* Solid ON for 5 seconds once device successful Join the network.
841	841	* Blink once when device transmit a packet.
842	842
843		-
844	844	== 2.8  ​Firmware Change Log ==
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846	846
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1043	1043	* Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1044	1044	* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1045	1045
1046		-
1047		-
1048	1048	= 4.  FAQ =
1049	1049
1050	1050	== 4.1  What is the frequency plan for LDDS75? ==
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1104	1104	* (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1105	1105	* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
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1107		-
1108		-
1109	1109	= 7. ​ Packing Info =
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1111	1111
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1120	1120	* Package Size / pcs : cm
1121	1121	* Weight / pcs : g
1122	1122
1123		-
1124		-
1125	1125	= 8.  ​Support =
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1127	1127	* 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.