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54	54	* Downlink to change configure
55	55	* 8500mAh Battery for long term use
56	56
	57	+
57	57	== 1.3 Specification ==
58	58
59	59
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99	99	* Sleep Mode: 5uA @ 3.3v
100	100	* LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm
101	101
	103	+
102	102	== 1.4 Applications ==
103	103
104	104
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131	131	)))
132	132	|(% style="width:167px" %)Fast press ACT 5 times.|(% style="width:117px" %)Deactivate Device|(% style="width:225px" %)(% style="color:red" %)**Red led**(%%) will solid on for 5 seconds. Means device is in Deep Sleep Mode.
133	133
	136	+
134	134	== 1.7 BLE connection ==
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136	136
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331	331	|(% style="width:160px" %)0x02|(% style="width:163px" %)Reply configures info|(% style="width:173px" %)[[Configure Info Payload>>||anchor="H3.4GetFirmwareVersionInfo"]]
332	332	|(% style="width:160px" %)0x03|(% style="width:163px" %)Reply Calibration Info|(% style="width:173px" %)[[Calibration Payload>>||anchor="H2.7Calibration"]]
333	333
	337	+
334	334	=== 2.3.7 Decode payload in The Things Network ===
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336	336
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558	558
559	559	Step1 : Clean probe
560	560
561		-user can use high grade sandpaper to polish it or put in 5% hydrochloric acid for several minutes. After the metal probe looks new, users can clean it to remove hydrochloric acid or other liquids from the surface.
	565	+user can use high grade sandpaper to polish it or put in 5% hydrochloric acid for several minutes. After the metal probe looks like new, user can use pure water to wash it.
	566	+
562	562
563	563	Step2 : Immerse the sensor in ph buffer solution to make the sensor values stable
564	564
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565	565	(((
566	566	User can do calibration for the probe. It is limited to use below pH buffer solution to calibrate: 4.00, 6.86, 9.18. When calibration, user need to clean the electrode and put the probe in the pH buffer solution to wait the value stable ( a new clean electrode might need max 24 hours to be stable).
567	567
568		-Note：Only one ph buffer with one of the ph values needs to be calibrated during calibration. Wait for the sensor measurement value to be stable, it does not need to be the same as the ph marked by the ph buffer
569	569
570		-
571	571	Step3 : The numerically stable sensors were calibrated using commands
572	572	)))
573	573
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600	600	)))
601	601	)))
602	602
603		-To use the AT COMMAND, refer to this link:
604	604
605		-* AT Command via Bluetooth Connection (**Recommended**): [[BLE Configure Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]].
606		-
607		-* AT Command via UART Connection : See [[UART Connection>>url:http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H2.3UARTConnectionforSN50v3basemotherboard]].
608		-
609		-To use Downlink, take TTN as an example, please refer to this link:
610		-
611		-* LoRaWAN Downlink.  Instruction for different platforms: See [[IoT LoRaWAN Server>>url:http://wiki.dragino.com/xwiki/bin/view/Main/]] section.
612		-
613		-
614	614	When the command is successfully used, the node sends a uplink.
615	615	This is the payload for uplink
616	616
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639	639
640	640	* Reply to non-confirmed packet: 14 00
641	641
	635	+
642	642	Step4：
643	643
644	644	After the calibration is completed, its measurement results in this ph buffer solution should be consistent with the numerical value of the command used in the calibration
645	645
646		-Examples:
647		-After using the command AT+PH=9 in 9.18ph buffer
648		-The readout returned by the sensor in 9.18ph buffer should be pH=9
649	649
650		-
651	651	== 2.8 Frequency Plans ==
652	652
653	653
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669	669
670	670	* LoRaWAN Downlink.  Instruction for different platforms: See [[IoT LoRaWAN Server>>http://wiki.dragino.com/xwiki/bin/view/Main/]] section.
671	671
	662	+
672	672	== 3.2 General Commands ==
673	673
674	674
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769	769
770	770	* Example 2: Downlink Payload: 06000003  ~/~/  Set the interrupt mode to rising edge trigger
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	763	+
772	772	=== 3.3.3 Calibrate Sensor ===
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879	879
880	880	* Update through UART TTL interface. **[[Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H1.LoRaSTv4baseHardware]]**.
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	874	+
882	882	= 6. FAQ =
883	883
884	884	== 6.1  AT Commands input doesn't work ==
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910	910
911	911	* (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
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	906	+
913	913	= 8. ​Packing Info =
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927	927
928	928	* Weight / pcs : g
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	924	+
930	930	= 9. Support =
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