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804	804
805	805	== 2.7  LED Indicator ==
806	806
807		-The LDDS75 has an internal LED which is to show the status of different state.
	807	+The LLDS12 has an internal LED which is to show the status of different state.
808	808
809		-
810		-* Blink once when device power on.
811		-* The device detects the sensor and flashes 5 times.
812		-* Solid ON for 5 seconds once device successful Join the network.
	809	+* The sensor is detected when the device is turned on, and it will flash 4 times quickly when it is detected.
813	813	* Blink once when device transmit a packet.
814	814
815		-
816		-
817	817	== 2.8  ​Firmware Change Log ==
818	818
819	819
820		-**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/]]
	815	+**Firmware download link: **[[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LLDS12/Firmware/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LLDS12/Firmware/]]
821	821
822	822
823	823	**Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
...	...	@@ -824,46 +824,6 @@
824	824
825	825
826	826
827		-== 2.9  Mechanical ==
828		-
829		-
830		-[[image:image-20220610172003-1.png]]
831		-
832		-[[image:image-20220610172003-2.png]]
833		-
834		-
835		-== 2.10  Battery Analysis  ==
836		-
837		-=== 2.10.1  Battery Type ===
838		-
839		-The LDDS75 battery is a combination of a 4000mAh or 8500mAh Li/SOCI2 Battery and a Super Capacitor. The battery is non-rechargeable battery type with a low discharge rate (<2% per year). This type of battery is commonly used in IoT devices such as water meter.
840		-
841		-
842		-The battery related documents as below:
843		-
844		-* (((
845		-[[ Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
846		-)))
847		-* (((
848		-[[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
849		-)))
850		-* (((
851		-[[Lithium-ion Battery-Capacitor datasheet>>url:http://www.dragino.com/downloads/downloads/datasheet/Battery/SPC_1520_datasheet.jpg]], [[Tech Spec>>url:http://www.dragino.com/downloads/downloads/datasheet/Battery/SPC1520%20Technical%20Specification20171123.pdf]]
852		-)))
853		-
854		- [[image:image-20220610172400-3.png]]
855		-
856		-
857		-
858		-=== 2.10.2  Replace the battery ===
859		-
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.
861		-
862		-
863		-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)
864		-
865		-
866		-
867	867	= 3.  LiDAR ToF Measurement =
868	868
869	869	== 3.1 Principle of Distance Measurement ==