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87	87	* 4000mAh or 8500mAh Battery for long term use
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90	90	== 1.3  Specification ==
91	91
92	92	=== 1.3.1  Rated environmental conditions ===
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93	93
94	94	[[image:image-20220610154839-1.png]]
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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)**
98		-)))
	98	+**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);**
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	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)**
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102	102	=== 1.3.2  Effective measurement range Reference beam pattern ===
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104	104	**(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	**(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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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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133		-
134		-
135	135	== 1.6  Pin mapping and power on ==
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178	178	[[image:image-20220607170145-1.jpeg]]
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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.
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186	186	Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
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189		-(((
190	190	**Add APP EUI in the application**
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193	193	[[image:image-20220610161353-4.png]]
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278	278	* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
279	279	* 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.
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281	281	=== 2.3.3  Interrupt Pin ===
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283	283	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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847	847	* Solid ON for 5 seconds once device successful Join the network.
848	848	* Blink once when device transmit a packet.
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850	850	== 2.8  ​Firmware Change Log ==
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852	852
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1049	1049	* Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1050	1050	* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
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1052	1052	= 4.  FAQ =
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1054	1054	== 4.1  What is the frequency plan for LDDS75? ==
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1108	1108	* (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1109	1109	* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
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1111	1111	= 7. ​ Packing Info =
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1122	1122	* Package Size / pcs : cm
1123	1123	* Weight / pcs : g
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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.