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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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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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314	314
315	315	=== 2.3.5  Sensor Flag ===
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	318	+(((
317	317	0x01: Detect Ultrasonic Sensor
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318	318
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319	319	0x00: No Ultrasonic Sensor
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329	329
330	330	The payload decoder function for TTN V3 is here:
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	337	+(((
332	332	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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858	858	== 2.8  ​Firmware Change Log ==
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861	861	**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/]]
	870	+)))
862	862
	872	+(((
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863	863
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864	864	**Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
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1005	1005	[[image:image-20220610172924-5.png]]
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1007	1007
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1008	1008	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:
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1011	1011	[[image:image-20220610172924-6.png||height="601" width="860"]]
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1029	1029	(((
1030	1030	Format: Command Code (0x01) followed by 3 bytes time value.
1031	1031
	1048	+(((
1032	1032	If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
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1034	1034	* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1035	1035	* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
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1053	1053	Format: Command Code (0x06) followed by 3 bytes.
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1055	1055	This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
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1057	1057	* Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1058	1058	* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
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	1080	+
1060	1060	= 4.  FAQ =
1061	1061
1062	1062	== 4.1  What is the frequency plan for LDDS75? ==
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1116	1116	* (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1117	1117	* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
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1119	1119	= 7. ​ Packing Info =
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1130	1130	* Package Size / pcs : cm
1131	1131	* Weight / pcs : g
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1133	1133	= 8.  ​Support =
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1135	1135	* 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.