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853	853	|=**Button**|=(% style="width: 1420px;" %)**Feature**
854	854	|**ACT**|(% style="width:1420px" %)If RS485 joined in network, press this button for more than 1 second, RS485 will upload a packet, and the SYS LED will give a (% style="color:blue" %)**Blue blink**
855	855	|**RST**|(% style="width:1420px" %)Reboot RS485
856		-|**PRO**|(% style="width:1420px" %)Use for upload image, see [[How to Update Image>>path:#upgrade_image]]
	856	+|**PRO**|(% style="width:1420px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
857	857
858	858
859		-
860	860	== 3.8 LEDs ==
861	861
862	862	(% border="1" style="background-color:#f7faff; width:500px" %)
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864	864	|**PWR**|Always on if there is power
865	865	|**SYS**|After device is powered on, the SYS will (% style="color:green" %)**fast blink in GREEN** (%%)for 5 times, means RS485-LN start to join LoRaWAN network. If join success, SYS will be (% style="color:green" %)**on GREEN for 5 seconds**(%%)**. **SYS will (% style="color:green" %)**blink Blue**(%%) on every upload and (% style="color:green" %)**blink Green**(%%) once receive a downlink message.
866	866
	866	+
867	867	= 4. Case Study =
868	868
869	869	User can check this URL for some case studies: [[APP RS485 COMMUNICATE WITH SENSORS>>doc:Main.Application Note \: Communicate with Different Sensors ----- RS485-LN RS485-BL.WebHome]]
...	...	@@ -883,7 +883,7 @@
883	883	[[image:1654162368066-342.png]]
884	884
885	885
886		-More detail AT Command manual can be found at [[AT Command Manual>>||anchor="3.5ConfigureRS485-BLviaATorDownlink"]]
	886	+More detail AT Command manual can be found at [[AT Command Manual>>https://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]]
887	887
888	888
889	889	== 5.2 Common AT Command Sequence ==
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975	975
976	976	**Step3: **Open flashloader; choose the correct COM port to update.
977	977
	978	+(((
978	978	(% style="color:blue" %) Hold down the PRO button and then momentarily press the RST reset button and the SYS led will change from OFF to ON, While SYS LED is RED ON, it means the RS485-LN is ready to be program.
	980	+)))
979	979
980	980
981	981	[[image:image-20220602175818-12.png]]
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1038	1038	* (% style="color:blue" %)**RU864**(%%): frequency bands RU864
1039	1039	* (% style="color:blue" %)**KZ865**(%%): frequency bands KZ865
1040	1040
	1043	+
	1044	+
1041	1041	= 9.Packing Info =
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1043	1043
...	...	@@ -1054,6 +1054,8 @@
1054	1054	* Package Size / pcs : 14.5 x 8 x 5 cm
1055	1055	* Weight / pcs : 170g
1056	1056
	1061	+
	1062	+
1057	1057	= 10. FCC Caution for RS485LN-US915 =
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1059	1059	Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.