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490	490	* Reply to the confirmation package: 14 01
491	491	* Reply to non-confirmed packet: 14 00
492	492
	493	+
	494	+
493	493	== 2.8 Frequency Plans ==
494	494
495	495	(((
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545	545	* Check what sub-band the LoRaWAN server ask from the OTAA Join Accept message and switch to that sub-band
546	546	* 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)
547	547
	550	+
	551	+
	552	+
548	548	=== 2.8.3 CN470-510 (CN470) ===
549	549
550	550	Used in China, Default use CHE=1
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611	611	* Check what sub-band the LoRaWAN server ask from the OTAA Join Accept message and switch to that sub-band
612	612	* 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)
613	613
	619	+
	620	+
	621	+
614	614	=== 2.8.5 AS920-923 & AS923-925 (AS923) ===
615	615
616	616	(% style="color:blue" %)**Default Uplink channel:**
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725	725	* The sensor is detected when the device is turned on, and it will flash 4 times quickly when it is detected.
726	726	* Blink once when device transmit a packet.
727	727
	736	+
	737	+
	738	+
728	728	== 2.10 ​Firmware Change Log ==
729	729
730	730
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768	768
769	769	(% style="color:#037691" %)**AT Command: AT+TDC**
770	770
	782	+[[image:image-20220607171554-8.png]]
771	771
772		-(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:710px" %)
773		-|(% style="width:154px" %)**Command Example**|(% style="width:223px" %)**Function**|(% style="width:330px" %)**Response**
774		-|(% style="width:154px" %)AT+TDC=?|(% style="width:223px" %)Show current transmit Interval|(% style="width:330px" %)(((
775		-30000
776	776
777		-OK
778	778
779		-the interval is 30000ms = 30s
780		-)))
781		-|(% style="width:154px" %)AT+TDC=60000|(% style="width:223px" %)Set Transmit Interval|(% style="width:330px" %)(((
782		-OK
783		-
784		-Set transmit interval to 60000ms = 60 seconds
785		-)))
786		-
787	787	(% style="color:#037691" %)**Downlink Command: 0x01**
788	788
789	789	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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