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3	3
4	4	**Contents:**
5	5
	6	+{{toc/}}
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7	7
8	8
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10	10
11	11
12	12
	14	+
13	13	= 1.  Introduction =
14	14
15	15	== 1.1 ​ What is LoRaWAN Distance Detection Sensor ==
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33	33	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.
34	34
35	35
36		-(% style="color:#4472c4" %) * (%%)Actually lifetime depends on network coverage and uplink interval and other factors
	38	+(% style="color:#4472c4" %) * (%%)Actually lifetime depends on network coverage and uplink interval and other factors.
37	37	)))
38	38	)))
39	39
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78	78	[[image:1654852253176-749.png]]
79	79
80	80
	83	+
81	81	**(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.**
82	82
83	83
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97	97	* Sewer
98	98	* Bottom water level monitoring
99	99
	103	+
100	100	== 1.6  Pin mapping and power on ==
101	101
102	102
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205	205	**Size (bytes)**
206	206	)))|=(% style="width: 62.5px;" %)**2**|=**2**|=1|=2|=**1**
207	207	|(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
208		-[[Distance>>||anchor="H2.3.3A0Distance"]]
	212	+[[Distance>>||anchor="H2.3.2A0Distance"]]
209	209
210	210	(unit: mm)
211		-)))|[[Digital Interrupt (Optional)>>||anchor="H2.3.4A0Distancesignalstrength"]]|(((
212		-[[Temperature (Optional )>>||anchor="H2.3.5A0InterruptPin"]]
213		-)))|[[Sensor Flag>>path:#Sensor_Flag]]
	215	+)))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
	216	+[[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
	217	+)))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
214	214
215	215	[[image:1654850511545-399.png]]
216	216
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237	237	* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
238	238	* 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.
239	239
	244	+
	245	+
240	240	=== 2.3.3  Interrupt Pin ===
241	241
242		-This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H4.2A0SetInterruptMode"]] for the hardware and software set up.
	248	+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.
243	243
244	244	**Example:**
245	245
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270	270	0x00: No Ultrasonic Sensor
271	271
272	272
273		-===
274		-(% style="color:inherit; font-family:inherit" %)2.3.6  Decode payload in The Things Network(%%) ===
275	275
	280	+=== 2.3.6  Decode payload in The Things Network ===
	281	+
276	276	While using TTN network, you can add the payload format to decode the payload.
277	277
278	278
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806	806	* Solid ON for 5 seconds once device successful Join the network.
807	807	* Blink once when device transmit a packet.
808	808
	815	+
	816	+
809	809	== 2.8  ​Firmware Change Log ==
810	810
811	811
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821	821
822	822	[[image:image-20220610172003-1.png]]
823	823
	832	+
824	824	[[image:image-20220610172003-2.png]]
825	825
826	826
	836	+
827	827	== 2.10  Battery Analysis ==
828	828
829	829	=== 2.10.1  Battery Type ===
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834	834	The battery related documents as below:
835	835
836	836	* (((
837		-[[ Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
	847	+[[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
838	838	)))
839	839	* (((
840	840	[[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
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850	850	=== 2.10.2  Replace the battery ===
851	851
852	852	(((
853		-You can change the battery in the LDDS75.The type of battery is not limited as long as the output is between 3v to 3.6v. On the main board, there is a diode (D1) between the battery and the main circuit. If you need to use a battery with less than 3.3v, please remove the D1 and shortcut the two pads of it so there won’t be voltage drop between battery and main board.
	863	+You can change the battery in the LDDS75.The type of battery is not limited as long as the output is between 3v to 3.6v. On the main board, there is a diode (D1) between the battery and the main circuit. If you need to use a battery with less than 3.3v, please remove the D1 and shortcut the two pads of it so there won't be voltage drop between battery and main board.
854	854	)))
855	855
856	856	(((
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858	858	)))
859	859
860	860	(((
861		-The default battery pack of LDDS75 includes a ER18505 plus super capacitor. If user can’t find this pack locally, they can find ER18505 or equivalence, which will also work in most case. The SPC can enlarge the battery life for high frequency use (update period below 5 minutes)
	871	+The default battery pack of LDDS75 includes a ER18505 plus super capacitor. If user can't find this pack locally, they can find ER18505 or equivalence, which will also work in most case. The SPC can enlarge the battery life for high frequency use (update period below 5 minutes)
862	862	)))
863	863
864	864
865	865
866		-= 3.  Configure LLDS12 via AT Command or LoRaWAN Downlink =
	876	+= 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
867	867
868	868	(((
869	869	(((
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1006	1006	* Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1007	1007	* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1008	1008
1009		-
1010		-
1011		-
1012	1012	= 4.  FAQ =
1013	1013
1014	1014	== 4.1  What is the frequency plan for LDDS75? ==
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1068	1068	* (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1069	1069	* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1070	1070
1071		-
1072		-
1073		-
1074	1074	= 7. ​ Packing Info =
1075	1075
1076	1076
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1085	1085	* Package Size / pcs : cm
1086	1086	* Weight / pcs : g
1087	1087
1088		-
1089		-
1090		-
1091	1091	= 8.  ​Support =
1092	1092
1093	1093	* 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.