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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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76	76	)))
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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174	174	* Firmware upgradable via program port
175	175	* Counting
176	176
	170	+
	171	+
177	177	== 1.4  Applications ==
178	178
179	179	* Smart Buildings & Home Automation
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183	183	* Smart Cities
184	184	* Smart Factory
185	185
	181	+
	182	+
186	186	== 1.5 Hardware Variants ==
187	187
188	188	(% border="1" style="background-color:#f7faff; width:500px" %)
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196	196	* 1 x Counting Port
197	197	)))
198	198
	196	+
	197	+
199	199	= 2. Power ON Device =
200	200
201	201	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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273	273	* **MOD5**: Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
274	274	* **ADDMOD6**: Trigger Mode, Optional, used together with MOD1 ~~ MOD5
275	275
	275	+
	276	+
276	276	=== 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
277	277
278	278	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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323	323	** DO1 is high in case there is load between DO1 and V+.
324	324	** DO1 LED is off in both case
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	327	+
	328	+
326	326	=== 3.3.2 AT+MOD~=2, (Double DI Counting) ===
327	327
328	328	**For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
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1241	1241
1242	1242	[[image:image-20220524094641-12.png||height="402" width="718"]]
1243	1243
1244		-
1245	1245	**Step 3**: Create an account or log in Mydevices.
1246	1246
1247	1247	**Step 4**: Search LT-22222-L(for both LT-22222-L / LT-33222-L) and add DevEUI.(% style="display:none" %)
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1865	1865	(((
1866	1866	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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1868		-
1869		-== 5.5 Can i use point to point communication for LT-22222-L? ==
1870		-
1871		-Yes, please refer [[Point to Point Communication>>doc:Main. Point to Point Communication of LT-22222-L.WebHome]]
1872		-
1873	1873
1874	1874	)))
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