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...	...	@@ -994,7 +994,7 @@
994	994
995	995	(% style="color:#037691" %)**Downlink Command: AT+INTMOD**
996	996
997		-[[image:image-20220610174917-9.png]]
	997	+[[image:image-20220610105907-1.png]]
998	998
999	999
1000	1000	(% style="color:#037691" %)**Downlink Command: 0x06**
...	...	@@ -1009,43 +1009,83 @@
1009	1009
1010	1010
1011	1011
1012		-= 4.  FAQ =
1013	1013
1014		-== 4.1  What is the frequency plan for LDDS75? ==
	1013	+= 6.  Use AT Command =
1015	1015
1016		-LDDS75 use the same frequency as other Dragino products. User can see the detail from this link:  [[Introduction>>doc:Main.End Device Frequency Band.WebHome||anchor="H1.Introduction"]]
	1015	+== 6.1  Access AT Commands ==
1017	1017
	1017	+LLDS12 supports AT Command set in the stock firmware. You can use a USB to TTL adapter to connect to LLDS12 for using AT command, as below.
1018	1018
	1019	+[[image:1654593668970-604.png]]
1019	1019
1020		-== 4.2  How to change the LoRa Frequency Bands/Region ==
	1021	+**Connection:**
1021	1021
1022		-You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1023		-When downloading the images, choose the required image file for download. ​
	1023	+(% style="background-color:yellow" %)** USB TTL GND <~-~-~-~-> GND**
1024	1024
	1025	+(% style="background-color:yellow" %)** USB TTL TXD  <~-~-~-~-> UART_RXD**
1025	1025
	1027	+(% style="background-color:yellow" %)** USB TTL RXD  <~-~-~-~-> UART_TXD**
1026	1026
1027		-== 4.3  Can I use LDDS75 in condensation environment? ==
1028	1028
1029		-LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
	1030	+(((
	1031	+(((
	1032	+In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LLDS12.
	1033	+)))
1030	1030
	1035	+(((
	1036	+LLDS12 will output system info once power on as below:
	1037	+)))
	1038	+)))
1031	1031
1032	1032
1033		-= 5.  Trouble Shooting =
	1041	+ [[image:1654593712276-618.png]]
1034	1034
1035		-== 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
	1043	+Valid AT Command please check [[Configure Device>>||anchor="H4.A0ConfigureLLDS12viaATCommandorLoRaWANDownlink"]].
1036	1036
1037		-It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1038	1038
	1046	+= 7.  FAQ =
1039	1039
1040		-== 5.2  AT Command input doesn't work ==
	1048	+== 7.1  How to change the LoRa Frequency Bands/Region ==
1041	1041
	1050	+You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
	1051	+When downloading the images, choose the required image file for download. ​
	1052	+
	1053	+
	1054	+= 8.  Trouble Shooting =
	1055	+
	1056	+== 8.1  AT Commands input doesn’t work ==
	1057	+
	1058	+
	1059	+(((
1042	1042	In the case if user can see the console output but can’t type input to the device. Please check if you already include the (% style="color:green" %)**ENTER**(%%) while sending out the command. Some serial tool doesn’t send (% style="color:green" %)**ENTER**(%%) while press the send key, user need to add ENTER in their string.
	1061	+)))
1043	1043
	1063	+
	1064	+== 8.2  Significant error between the output distant value of LiDAR and actual distance ==
	1065	+
	1066	+
1044	1044	(((
	1068	+(% style="color:blue" %)**Cause ①**(%%)**：**Due to the physical principles of The LiDAR probe, the above phenomenon is likely to occur if the detection object is the material with high reflectivity (such as mirror, smooth floor tile, etc.) or transparent substance (such as glass and water, etc.)
	1069	+)))
	1070	+
	1071	+(((
	1072	+Troubleshooting: Please avoid use of this product under such circumstance in practice.
	1073	+)))
	1074	+
	1075	+(((
1045	1045
1046	1046	)))
1047	1047
	1079	+(((
	1080	+(% style="color:blue" %)**Cause ②**(%%)**: **The IR-pass filters are blocked.
	1081	+)))
1048	1048
	1083	+(((
	1084	+Troubleshooting: please use dry dust-free cloth to gently remove the foreign matter.
	1085	+)))
	1086	+
	1087	+
	1088	+
1049	1049	= 6.  Order Info =
1050	1050
1051	1051
...	...	@@ -1065,9 +1065,11 @@
1065	1065
1066	1066	(% style="color:blue" %)**YY**(%%): Battery Option
1067	1067
1068		-* (% style="color:red" %)**4**(%%): 4000mAh battery
1069		-* (% style="color:red" %)**8**(%%): 8500mAh battery
	1108	+* **(% style="color:red" %)4**(%%): 4000mAh battery
	1109	+* **(% style="color:red" %)8**(%%): 8500mAh battery
1070	1070
	1111	+
	1112	+
1071	1071	= 7. ​ Packing Info =
1072	1072
1073	1073
...	...	@@ -1082,6 +1082,8 @@
1082	1082	* Package Size / pcs : cm
1083	1083	* Weight / pcs : g
1084	1084
	1127	+
	1128	+
1085	1085	= 8.  ​Support =
1086	1086
1087	1087	* 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.

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