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14	14	= 1.Introduction =
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16	16	== 1.1 What is LT Series I/O Controller ==
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48	48	== 1.2  Specifications ==
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50	50	(((
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51	51	**Hardware System:**
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73	73	(((
74	74	**Interface for Model: LT22222-L:**
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93	93	Power Input 7~~ 24V DC.
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96	96	(((
97	97	**LoRa Spec:**
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	168	+
160	160	== 1.3 Features ==
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162	162	* LoRaWAN Class A & Class C protocol
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168	168	* Counting
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	180	+
171	171	== 1.4  Applications ==
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173	173	* Smart Buildings & Home Automation
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178	178	* Smart Factory
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	191	+
181	181	== 1.5 Hardware Variants ==
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183	183	(% border="1" style="background-color:#f7faff; width:500px" %)
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192	192	)))
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195	195	= 2. Power ON Device =
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197	197	The LT controller can be powered by 7 ~~ 24V DC power source. Connect VIN to Power Input V+ and GND to power input V- to power the LT controller.
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203	203	[[image:1653297104069-180.png]]
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206	206	= 3. Operation Mode =
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208	208	== 3.1 How it works? ==
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220	220	== 3.2 Example to join LoRaWAN network ==
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258	258	[[image:1653298044601-602.png||height="405" width="709"]]
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261	261	== 3.3 Uplink Payload ==
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263	263	There are five working modes + one interrupt mode on LT for different type application:
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270	270	* **ADDMOD6**: Trigger Mode, Optional, used together with MOD1 ~~ MOD5
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273	273	=== 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
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275	275	The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default.
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305	305	* [1] RO1 relay channel is close and the RO1 LED is ON.
306	306	* [0] RO2 relay channel is open and RO2 LED is OFF;
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308	308	**LT22222-L:**
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310	310	* [1] DI2 channel is high input and DI2 LED is ON;
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321	321	** DO1 LED is off in both case
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324	324	=== 3.3.2 AT+MOD~=2, (Double DI Counting) ===
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326	326	**For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
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414	414	)))
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417	417	=== 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
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419	419	**LT22222-L**: This mode the DI1 is used as a counting pin.
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461	461	=== 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
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463	463	**LT22222-L**: This mode the DI1 is used as a counting pin.
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542	542	=== 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
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544	544	**LT22222-L**: This mode the DI1 is used as a counting pin.
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1864	1864	User can run AT+DEBUG command to see the counting event in serial. If firmware too old and doesn’t support AT+DEBUG. User can update to latest firmware first.
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	1890	+== 5.5 Can i use point to point communication for LT-22222-L? ==
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	1892	+Yes, please refer [[Point to Point Communication>>doc:Main. Point to Point Communication of LT-22222-L.WebHome]]
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