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59	59	* IP66 Waterproof Enclosure
60	60	* 4000mAh or 8500mAh Battery for long term use
61	61
62		-
63	63	== 1.3  Specification ==
64	64
65	65	=== 1.3.1  Rated environmental conditions ===
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101	101	* Sewer
102	102	* Bottom water level monitoring
103	103
104		-
105		-
106	106	== 1.6  Pin mapping and power on ==
107	107
108	108
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244	244	* 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.
245	245
246	246
247		-
248		-
249	249	=== 2.3.3  Interrupt Pin ===
250	250
251	251	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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816	816	* Blink once when device transmit a packet.
817	817
818	818
819		-
820		-
821	821	== 2.8  ​Firmware Change Log ==
822	822
823	823
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833	833
834	834	[[image:image-20220610172003-1.png]]
835	835
	829	+
836	836	[[image:image-20220610172003-2.png]]
837	837
838	838
	833	+
839	839	== 2.10  Battery Analysis ==
840	840
841	841	=== 2.10.1  Battery Type ===
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846	846	The battery related documents as below:
847	847
848	848	* (((
849		-[[ Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
	844	+[[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
850	850	)))
851	851	* (((
852	852	[[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
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862	862	=== 2.10.2  Replace the battery ===
863	863
864	864	(((
865		-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.
	860	+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.
866	866	)))
867	867
868	868	(((
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870	870	)))
871	871
872	872	(((
873		-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)
	868	+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)
874	874	)))
875	875
876	876
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885	885
886	886	* (((
887	887	(((
888		-AT Command Connection: See [[FAQ>>||anchor="H7.A0FAQ"]].
	883	+AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
889	889	)))
890	890	)))
891	891	* (((
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1018	1018	* Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1019	1019	* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1020	1020
	1016	+
	1017	+
1021	1021	= 4.  FAQ =
1022	1022
1023	1023	== 4.1  What is the frequency plan for LDDS75? ==
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1077	1077	* (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1078	1078	* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1079	1079
	1077	+
	1078	+
1080	1080	= 7. ​ Packing Info =
1081	1081
1082	1082
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1091	1091	* Package Size / pcs : cm
1092	1092	* Weight / pcs : g
1093	1093
	1093	+
	1094	+
1094	1094	= 8.  ​Support =
1095	1095
1096	1096	* 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.