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...	...	@@ -262,8 +262,6 @@
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263	263	Feature: Change the sensor delay time.
264	264
265		-There are six models of GroPoint Air, and each model returns a different number of temperature and humidity. The more bytes of the returned value, the longer the delay. The AT+SDELAY command can adjust the time that the sensor returns data to the node, and can adjust different delays according to different types of sensors.
266		-
267	267	The default delay is 1000ms.
268	268
269	269	**AT Command: AT+SDELAY**
...	...	@@ -279,15 +279,8 @@
279	279	* Example 1: Downlink Payload: A10003E8 ~/~/ Set the sensor delay time = 1000ms
280	280	* Example 2: Downlink Payload: A10007D0 ~/~/ Set the sensor delay time = 2000ms
281	281
282		-== 3.4 Query sensor model function ==
	280	+== 3.4 Get Firmware Version Info ==
283	283
284		-Feature: Using this function will re-update the model.
285		-
286		-**Downlink Command: 0xFA00**
287		-
288		-
289		-== 3.5 Get Firmware Version Info ==
290		-
291	291	Feature: use downlink to get firmware version.
292	292
293	293	**Downlink Command: 0x26**
...	...	@@ -474,9 +474,7 @@
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475	475	In 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 pressing the send key, user need to add ENTER in their string.
476	476
477		-== Why i see the payload is 7FFF? ==
478	478
479		-The device will judge the length of the data received by the serial port. If the length of the received data is 0, it means that there is a problem with the sensor communication or the sensor is not connected properly, it is invalid data, and the uploaded data is 7FFF.
480	480
481	481	= Order Info =
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