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1	1	(% style="text-align:center" %)
2	2	[[image:1654846127817-788.png]]
3	3
	4	+**Contents:**
4	4
5		-
6		-
7		-
8		-**Table of Contents:**
9		-
10	10	{{toc/}}
11	11
12	12
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29	29	)))
30	30
31	31	(((
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32	32	It detects the distance** (% style="color:#4472c4" %) between the measured object and the sensor(%%)**, and uploads the value via wireless to LoRaWAN IoT Server.
33	33	)))
34	34
35	35	(((
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36	36	The LoRa wireless technology used in LDDS75 allows device to send data and reach extremely long ranges at low data-rates. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption.
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38	38
39	39	(((
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40	40	LDDS75 is powered by (% style="color:#4472c4" %)** 4000mA or 8500mAh Li-SOCI2 battery**(%%); It is designed for long term use up to 10 years*.
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43	43	(((
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44	44	Each LDDS75 pre-loads with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server and it will auto connect if there is network coverage, after power on.
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46	46
47	47	(((
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48	48	(% style="color:#4472c4" %) * (%%)Actually lifetime depends on network coverage and uplink interval and other factors.
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50	50	)))
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70	70	* IP66 Waterproof Enclosure
71	71	* 4000mAh or 8500mAh Battery for long term use
72	72
73		-
74		-
75	75	== 1.3  Specification ==
76	76
77	77	=== 1.3.1  Rated environmental conditions ===
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116	116	* Bottom water level monitoring
117	117
118	118
119		-
120	120	== 1.6  Pin mapping and power on ==
121	121
122	122
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320	320
321	321	The payload decoder function for TTN V3 is here:
322	322
323		-(((
324	324	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/]]
325		-)))
326	326
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328	328
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848	848	* Solid ON for 5 seconds once device successful Join the network.
849	849	* Blink once when device transmit a packet.
850	850
851		-
852		-
853	853	== 2.8  ​Firmware Change Log ==
854	854
855	855
856		-(((
857	857	**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/]]
858		-)))
859	859
860		-(((
861		-
862		-)))
863	863
864		-(((
865	865	**Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
866		-)))
867	867
868	868
869	869
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1007	1007	[[image:image-20220610172924-5.png]]
1008	1008
1009	1009
1010		-(((
1011	1011	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:
1012		-)))
1013	1013
1014	1014
1015	1015	[[image:image-20220610172924-6.png||height="601" width="860"]]
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1033	1033	(((
1034	1034	Format: Command Code (0x01) followed by 3 bytes time value.
1035	1035
1036		-(((
1037	1037	If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1038		-)))
1039	1039
1040	1040	* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1041	1041	* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1042	1042	)))
1043		-)))
1044	1044
1045	1045
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1046	1046
1047		-
1048		-
1049	1049	== 3.3  Set Interrupt Mode ==
1050	1050
1051	1051	Feature, Set Interrupt mode for GPIO_EXIT.
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1059	1059
1060	1060	Format: Command Code (0x06) followed by 3 bytes.
1061	1061
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1063	1063	This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1064		-)))
1065	1065
1066	1066	* Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1067	1067	* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1068	1068
1069		-
1070		-
1071	1071	= 4.  FAQ =
1072	1072
1073	1073	== 4.1  What is the frequency plan for LDDS75? ==
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1127	1127	* (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1128	1128	* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1129	1129
1130		-
1131		-
1132	1132	= 7. ​ Packing Info =
1133	1133
1134	1134
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1143	1143	* Package Size / pcs : cm
1144	1144	* Weight / pcs : g
1145	1145
1146		-
1147		-
1148	1148	= 8.  ​Support =
1149	1149
1150	1150	* 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.