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1	1	(% style="text-align:center" %)
2	2	[[image:1654846127817-788.png]]
3	3
4		-**Contents:**
5	5
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	6	+
	7	+
	8	+**Table of Contents:**
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6	6	{{toc/}}
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8	8
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25	25	)))
26	26
27	27	(((
28		-
29		-)))
30		-
31		-(((
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	(((
36		-
37		-)))
38		-
39		-(((
40	40	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.
41	41	)))
42	42
43	43	(((
44		-
45		-)))
46		-
47		-(((
48	48	LDDS75 is powered by (% style="color:#4472c4" %)** 4000mA or 8500mAh Li-SOCI2 battery**(%%); It is designed for long term use up to 10 years*.
49	49	)))
50	50
51	51	(((
52		-
53		-)))
54		-
55		-(((
56	56	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.
57	57	)))
58	58
59	59	(((
60		-
61		-)))
62		-
63		-(((
64	64	(% style="color:#4472c4" %) * (%%)Actually lifetime depends on network coverage and uplink interval and other factors.
65	65	)))
66	66	)))
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88	88
89	89
90	90
91		-
92		-
93	93	== 1.3  Specification ==
94	94
95	95	=== 1.3.1  Rated environmental conditions ===
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135	135
136	136
137	137
138		-
139		-
140	140	== 1.6  Pin mapping and power on ==
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142	142
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293	293
294	294
295	295
296		-
297		-
298	298	=== 2.3.3  Interrupt Pin ===
299	299
300	300	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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872	872
873	873
874	874
875		-
876		-
877	877	== 2.8  ​Firmware Change Log ==
878	878
879	879
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1064	1064	* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1065	1065	* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1066	1066	)))
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1067	1067
1068	1068
1069		-
1070		-)))
1071	1071
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1072	1072	== 3.3  Set Interrupt Mode ==
1073	1073
1074	1074	Feature, Set Interrupt mode for GPIO_EXIT.
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1090	1090	* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1091	1091
1092	1092
	1070	+
1093	1093	= 4.  FAQ =
1094	1094
1095	1095	== 4.1  What is the frequency plan for LDDS75? ==
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1150	1150	* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1151	1151
1152	1152
	1131	+
1153	1153	= 7. ​ Packing Info =
1154	1154
1155	1155
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1165	1165	* Weight / pcs : g
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1168	1168	= 8.  ​Support =
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1170	1170	* 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.