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1	1	(% style="text-align:center" %)
2	2	[[image:)YK]Y_LZJIO]J2~~VA}OQJM2.png||height="442" width="410"]]
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4	4	**Table of Contents:**
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6	6	{{toc/}}
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173	173
174	174	Make sure the switch is in FLASH position, then power on device by connecting the jumper on NSPH01. NSPH01 will output system info once power on as below, we can enter the (% style="color:green" %)**password: 12345678**(%%) to access AT Command input.
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176		-
177	177	[[image:image-20220912144017-1.png]]
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179		-
180	180	(% style="color:red" %)**Note: the valid AT Commands can be found at:**(%%)**  **[[**https:~~/~~/www.dropbox.com/sh/351dwor6joz8nwh/AADn1BQaAAxLF_QMyU8NkW47a?dl=0**>>url:https://www.dropbox.com/sh/351dwor6joz8nwh/AADn1BQaAAxLF_QMyU8NkW47a?dl=0]]
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273	273	Each time the device uploads a data package, 8 sets of recorded data will be attached. Up to 32 sets of recorded data can be uploaded.
274	274
275		-(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:520px" %)
276		-|(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**Size(bytes)**|(% style="background-color:#d9e2f3; color:#0070c0; width:40px" %)**8**|(% style="background-color:#d9e2f3; color:#0070c0; width:20px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:25px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:60px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:20px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:40px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:40px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**4**|(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:35px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:40px" %)**4**
	283	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:515px" %)
	284	+|(% style="background-color:#4f81bd; color:white; width:50px" %)**Size(bytes)**|(% style="background-color:#4f81bd; color:white; width:40px" %)**8**|(% style="background-color:#4f81bd; color:white; width:20px" %)**2**|(% style="background-color:#4f81bd; color:white; width:23px" %)**2**|(% style="background-color:#4f81bd; color:white; width:60px" %)**1**|(% style="background-color:#4f81bd; color:white; width:20px" %)**1**|(% style="background-color:#4f81bd; color:white; width:40px" %)**1**|(% style="background-color:#4f81bd; color:white; width:40px" %)**2**|(% style="background-color:#4f81bd; color:white; width:51px" %)**2**|(% style="background-color:#4f81bd; color:white; width:49px" %)**4**|(% style="background-color:#4f81bd; color:white; width:49px" %)**2**|(% style="background-color:#4f81bd; color:white; width:34px" %)**2**|(% style="background-color:#4f81bd; color:white; width:39px" %)**4**
277	277	|(% style="width:96px" %)Value|(% style="width:83px" %)Device ID|(% style="width:44px" %)Ver|(% style="width:42px" %)BAT|(% style="width:124px" %)Signal Strength|(% style="width:57px" %)MOD|(% style="width:80px" %)Interrupt|(% style="width:69px" %)Soil PH|(% style="width:134px" %)Soil Temperature|(% style="width:98px" %)Time stamp|(% style="width:134px" %)Soil Temperature|(% style="width:68px" %)Soil PH|(% style="width:125px" %)Time stamp  .....
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279	279	If we use the MQTT client to subscribe to this MQTT topic, we can see the following information when the NSPH01 uplink data.
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442	442	By default, NSPH01 prints the downlink payload to console port.
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444		-(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:479.818px" %)
445		-|=(% style="width: 183px; background-color:#D9E2F3;color:#0070C0" %)**Downlink Control Type**|=(% style="width: 55px; background-color:#D9E2F3;color:#0070C0" %)FPort|=(% style="width: 93px; background-color:#D9E2F3;color:#0070C0" %)**Type Code**|=(% style="width: 146px; background-color: rgb(217, 226, 243); color: rgb(0, 112, 192);" %)**Downlink payload size(bytes)**
	452	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
	453	+|=(% style="width: 183px; background-color:#4F81BD;color:white" %)**Downlink Control Type**|=(% style="width: 55px; background-color:#4F81BD;color:white" %)FPort|=(% style="width: 93px; background-color:#4F81BD;color:white" %)**Type Code**|=(% style="width: 179px; background-color:#4F81BD;color:white" %)**Downlink payload size(bytes)**
446	446	|(% style="width:183px" %)TDC (Transmit Time Interval)|(% style="width:55px" %)Any|(% style="width:93px" %)01|(% style="width:146px" %)4
447	447	|(% style="width:183px" %)RESET|(% style="width:55px" %)Any|(% style="width:93px" %)04|(% style="width:146px" %)2
448	448	|(% style="width:183px" %)INTMOD|(% style="width:55px" %)Any|(% style="width:93px" %)06|(% style="width:146px" %)4
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582	582	After stable, user can use below command to calibrate.
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584		-(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:520px" %)
585		-|(% style="background-color:#d9e2f3; color:#0070c0; width:120px" %)**pH buffer solution**|(% style="background-color:#d9e2f3; color:#0070c0; width:150px" %)**AT Command to calibrate**|(% style="background-color:#d9e2f3; color:#0070c0; width:150px" %)**Downlink Command**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**Read Cal Value**
	592	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:515px" %)
	593	+|(% style="background-color:#4f81bd; color:white; width:118px" %)**pH buffer solution**|(% style="background-color:#4f81bd; color:white; width:149px" %)**AT Command to calibrate**|(% style="background-color:#4f81bd; color:white; width:149px" %)**Downlink Command**|(% style="background-color:#4f81bd; color:white; width:99px" %)**Read Cal Value**
586	586	|(% style="width:149px" %)4.00|(% style="width:197px" %)AT+PHCAL=4|(% style="width:206px" %)(((
587	587	0x13 04
588	588	Reply with Calibrate payload