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73	73	== 1.1 ​What is LoRaWAN Soil pH Sensor ==
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75	75	The Dragino LSPH01 is a (% style="color:#4f81bd" %)**LoRaWAN Soil pH Sensor**(%%) for IoT of Agriculture. It is designed to measure the soil PH and soil temperature, so to send to the platform to analyze the soil acid or alkali level. The probe is IP68 waterproof.
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77	77	LSPH01 probe is made by Solid AgCl reference electrode and Pure metal pH sensitive electrode. It can detect soil's** (% style="color:#4f81bd" %)pH (%%)**with high accuracy and stable value. The LSPH01 probe can be buried into soil for long time use.
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79	79	The LoRa wireless technology used in LSPH01 allows device to send data and reach extremely long ranges at low data-rates. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption.
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81	81	LSPH01 is powered by (% style="color:#4f81bd" %)**8500mAh Li-SOCI2 battery**(%%), it is designed for long term use up to 5 years.
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83	83	Each LSPH01 is pre-load with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server and it will auto connect after power on.
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86	86	[[image:1654592435432-887.png]]
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211	211	[[image:image-20220607170442-2.png]]
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214	214	(% style="color:blue" %)**Step 3**(%%)**:** The LSPH01 will auto join to the TTN network. After join success, it will start to upload messages to TTN and you can see the messages in the panel.
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216	216	[[image:1654592697690-910.png]]
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220	220	== 2.3 ​Uplink Payload ==
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222	222	LSPH01 will uplink payload via LoRaWAN with below payload format:
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224	224	Uplink payload includes in total 11 bytes.
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226	226	Normal uplink payload:
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228	228	(% border="1" cellspacing="10" style="background-color:#ffffcc; width:510px" %)
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308	308	=== 2.3.6 Message Type ===
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310	310	For a normal uplink payload, the message type is always 0x01.
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312	312	Valid Message Type:
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315	315	(% border="1" cellspacing="10" style="background-color:#ffffcc; width:510px" %)
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491	491	* Reply to the confirmation package: 14 01
492	492	* Reply to non-confirmed packet: 14 00
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494	494	== 2.8 Frequency Plans ==
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614	614	* 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)
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617	617	=== 2.8.5 AS920-923 & AS923-925 (AS923) ===
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619	619	(% style="color:blue" %)**Default Uplink channel:**
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729	729	* Blink once when device transmit a packet.
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732	732	== 2.10 ​Firmware Change Log ==
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785	785	* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
786	786	* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
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788	788	== 3.2 Set Interrupt Mode ==
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790	790	Feature, Set Interrupt mode for GPIO_EXIT.
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821	821	* Reply to the confirmation package: 26 01
822	822	* Reply to non-confirmed packet: 26 00
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824	824	Device will send an uplink after got this downlink command. With below payload:
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826	826	Configures info payload: