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17	17	= 1.Introduction =
18	18
19	19	== 1.1 What is LT Series I/O Controller ==
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51	51	== 1.2  Specifications ==
52	52
53	53	(((
54		-
55		-
56	56	**Hardware System:**
57	57	)))
58	58
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77	77
78		-
79	79	(((
80	80	**Interface for Model: LT22222-L:**
81	81	)))
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99	99	Power Input 7~~ 24V DC.
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101	101
102		-
103	103	(((
104	104	**LoRa Spec:**
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164	164
165	165	)))
166	166
167		-
168		-
169	169	== 1.3 Features ==
170	170
171	171	* LoRaWAN Class A & Class C protocol
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177	177	* Counting
178	178
179	179
180		-
181	181	== 1.4  Applications ==
182	182
183	183	* Smart Buildings & Home Automation
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188	188	* Smart Factory
189	189
190	190
191		-
192	192	== 1.5 Hardware Variants ==
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194	194	(% border="1" style="background-color:#f7faff; width:500px" %)
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203	203	)))
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205	205
206		-
207	207	= 2. Power ON Device =
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209	209	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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215	215	[[image:1653297104069-180.png]]
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217	217
218		-
219	219	= 3. Operation Mode =
220	220
221	221	== 3.1 How it works? ==
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282	282	* **MOD5**: Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
283	283	* **ADDMOD6**: Trigger Mode, Optional, used together with MOD1 ~~ MOD5
284	284
	272	+
285	285	=== 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
286	286
287	287	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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332	332	** DO1 is high in case there is load between DO1 and V+.
333	333	** DO1 LED is off in both case
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	323	+
335	335	=== 3.3.2 AT+MOD~=2, (Double DI Counting) ===
336	336
337	337	**For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
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1874	1874	(((
1875	1875	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.
1876	1876
1877		-
1878		-== 5.5 Can i use point to point communication for LT-22222-L? ==
1879		-
1880		-Yes, please refer [[Point to Point Communication>>doc:Main. Point to Point Communication of LT-22222-L.WebHome]]
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1883	1883	)))
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