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...	...	@@ -1008,12 +1008,11 @@
1008	1008
1009	1009
1010	1010
1011		-
1012	1012	= 4.  FAQ =
1013	1013
1014	1014	== 4.1  What is the frequency plan for LDDS75? ==
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	+LDDS75 use the same frequency as other Dragino products. User can see the detail from this link:
1017	1017
1018	1018
1019	1019
...	...	@@ -1032,45 +1032,62 @@
1032	1032
1033	1033	= 5.  Trouble Shooting =
1034	1034
1035		-== 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
	1034	+== 5.1  AT Commands input doesn’t work ==
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
	1037	+(((
	1038	+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.
	1039	+)))
1039	1039
1040		-== 5.2  AT Command input doesn't work ==
1041	1041
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.
	1042	+== 5.2  Significant error between the output distant value of LiDAR and actual distance ==
1043	1043
	1044	+
1044	1044	(((
	1046	+(% 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.)
	1047	+)))
	1048	+
	1049	+(((
	1050	+Troubleshooting: Please avoid use of this product under such circumstance in practice.
	1051	+)))
	1052	+
	1053	+(((
1045	1045
1046	1046	)))
1047	1047
	1057	+(((
	1058	+(% style="color:blue" %)**Cause ②**(%%)**: **The IR-pass filters are blocked.
	1059	+)))
1048	1048
1049		-= 6.  Order Info =
	1061	+(((
	1062	+Troubleshooting: please use dry dust-free cloth to gently remove the foreign matter.
	1063	+)))
1050	1050
1051	1051
1052		-Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
1053	1053
	1067	+= 6.  Order Info =
1054	1054
1055		-(% style="color:blue" %)**XX**(%%)**: **The default frequency band
1056	1056
1057		-* (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1058		-* (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1059		-* (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1060		-* (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1061		-* (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1062		-* (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1063		-* (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1064		-* (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
	1070	+Part Number: (% style="color:blue" %)**LDDS75-XX-YY**
1065	1065
1066		-(% style="color:blue" %)**YY**(%%): Battery Option
1067	1067
1068		-* (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1069		-* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
	1073	+(% style="color:blue" %)**XX**(%%): The default frequency band
1070	1070
	1075	+* (% style="color:red" %)**AS923**(%%):  LoRaWAN AS923 band
	1076	+* (% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
	1077	+* (% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
	1078	+* (% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
	1079	+* (% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
	1080	+* (% style="color:red" %)**US915**(%%): LoRaWAN US915 band
	1081	+* (% style="color:red" %)**IN865**(%%):  LoRaWAN IN865 band
	1082	+* (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1071	1071
	1084	+(% style="color:blue" %)**YY**(%%): Battery Option
1072	1072
	1086	+* (% style="color:red" %)**4**(%%): 4000mAh battery
	1087	+* (% style="color:red" %)**8**(%%): 8500mAh battery
1073	1073
	1089	+
1074	1074	= 7. ​ Packing Info =
1075	1075
1076	1076
...	...	@@ -1086,8 +1086,6 @@
1086	1086	* Weight / pcs : g
1087	1087
1088	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.