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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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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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160	160	== 1.3 Features ==
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162	162	* LoRaWAN Class A & Class C protocol
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193	193	* 1 x Counting Port
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195	195
196		-
197		-
198	198	= 2. Power ON Device =
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200	200	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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272	272	* **MOD5**: Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
273	273	* **ADDMOD6**: Trigger Mode, Optional, used together with MOD1 ~~ MOD5
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275		-
276		-
277	277	=== 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
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279	279	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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324	324	** DO1 is high in case there is load between DO1 and V+.
325	325	** DO1 LED is off in both case
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327		-
328		-
329	329	=== 3.3.2 AT+MOD~=2, (Double DI Counting) ===
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331	331	**For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
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1245	1245	[[image:image-20220524094641-12.png||height="402" width="718"]]
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1247	1247	**Step 3**: Create an account or log in Mydevices.
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1249	1249	**Step 4**: Search LT-22222-L(for both LT-22222-L / LT-33222-L) and add DevEUI.(% style="display:none" %)
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1868	1868	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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	1875	+== 5.5 Can i use point to point communication for LT-22222-L? ==
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	1877	+Yes, please refer [[Point to Point Communication>>doc:Main. Point to Point Communication of LT-22222-L.WebHome]]
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