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241	241	* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
242	242	* 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.
243	243
	244	+
	245	+
244	244	=== 2.3.3  Interrupt Pin ===
245	245
246	246	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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810	810	* Solid ON for 5 seconds once device successful Join the network.
811	811	* Blink once when device transmit a packet.
812	812
	815	+
	816	+
813	813	== 2.8  ​Firmware Change Log ==
814	814
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825	825
826	826	[[image:image-20220610172003-1.png]]
827	827
	832	+
828	828	[[image:image-20220610172003-2.png]]
829	829
830	830
	836	+
831	831	== 2.10  Battery Analysis ==
832	832
833	833	=== 2.10.1  Battery Type ===
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838	838	The battery related documents as below:
839	839
840	840	* (((
841		-[[ 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]],
842	842	)))
843	843	* (((
844	844	[[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
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854	854	=== 2.10.2  Replace the battery ===
855	855
856	856	(((
857		-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.
858	858	)))
859	859
860	860	(((
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862	862	)))
863	863
864	864	(((
865		-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)
866	866	)))
867	867
868	868
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877	877
878	878	* (((
879	879	(((
880		-AT Command Connection: See [[FAQ>>||anchor="H7.A0FAQ"]].
	886	+AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
881	881	)))
882	882	)))
883	883	* (((
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1010	1010	* Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1011	1011	* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
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	1020	+
	1021	+
1013	1013	= 4.  FAQ =
1014	1014
1015	1015	== 4.1  What is the frequency plan for LDDS75? ==
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1069	1069	* (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1070	1070	* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1071	1071
	1081	+
	1082	+
	1083	+
1072	1072	= 7. ​ Packing Info =
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