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547	547	* Check what sub-band the LoRaWAN server ask from the OTAA Join Accept message and switch to that sub-band
548	548	* Use the Join successful sub-band if the server doesn’t include sub-band info in the OTAA Join Accept message ( TTN v2 doesn't include)
549	549
550		-
551		-
552		-
553	553	=== 2.8.3 CN470-510 (CN470) ===
554	554
555	555	Used in China, Default use CHE=1
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616	616	* Check what sub-band the LoRaWAN server ask from the OTAA Join Accept message and switch to that sub-band
617	617	* Use the Join successful sub-band if the server doesn’t include sub-band info in the OTAA Join Accept message ( TTN v2 doesn't include)
618	618
619		-
620		-
621		-
622	622	=== 2.8.5 AS920-923 & AS923-925 (AS923) ===
623	623
624	624	(% style="color:blue" %)**Default Uplink channel:**
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733	733	* The sensor is detected when the device is turned on, and it will flash 4 times quickly when it is detected.
734	734	* Blink once when device transmit a packet.
735	735
736		-
737		-
738		-
739	739	== 2.10 ​Firmware Change Log ==
740	740
741	741
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779	779
780	780	(% style="color:#037691" %)**AT Command: AT+TDC**
781	781
782		-[[image:image-20220607171554-8.png]]
783	783
	774	+(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:710px" %)
	775	+|(% style="width:154px" %)**Command Example**|(% style="width:223px" %)**Function**|(% style="width:330px" %)**Response**
	776	+|(% style="width:154px" %)AT+TDC=?|(% style="width:223px" %)Show current transmit Interval|(% style="width:330px" %)(((
	777	+30000
784	784
	779	+OK
785	785
	781	+the interval is 30000ms = 30s
	782	+)))
	783	+|(% style="width:154px" %)AT+TDC=60000|(% style="width:223px" %)Set Transmit Interval|(% style="width:330px" %)(((
	784	+OK
	785	+
	786	+Set transmit interval to 60000ms = 60 seconds
	787	+)))
	788	+
786	786	(% style="color:#037691" %)**Downlink Command: 0x01**
787	787
788	788	Format: Command Code (0x01) followed by 3 bytes time value.

image-20220607171554-8.png

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1		-XWiki.Xiaoling

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