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11	11
12	12
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14		-
15		-
16		-
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.
100	100	)))
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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215	215	[[image:1653297104069-180.png]]
216	216
217	217
218		-
219	219	= 3. Operation Mode =
220	220
221	221	== 3.1 How it works? ==
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230	230
231	231	)))
232	232
233		-
234		-
235	235	== 3.2 Example to join LoRaWAN network ==
236	236
237	237	(((
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273	273	[[image:1653298044601-602.png||height="405" width="709"]]
274	274
275	275
276		-
277	277	== 3.3 Uplink Payload ==
278	278
279	279	There are five working modes + one interrupt mode on LT for different type application:
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285	285	* **MOD5**: Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
286	286	* **ADDMOD6**: Trigger Mode, Optional, used together with MOD1 ~~ MOD5
287	287
	275	+
	276	+
288	288	=== 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
289	289
290	290	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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335	335	** DO1 is high in case there is load between DO1 and V+.
336	336	** DO1 LED is off in both case
337	337
	327	+
	328	+
338	338	=== 3.3.2 AT+MOD~=2, (Double DI Counting) ===
339	339
340	340	**For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
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1253	1253
1254	1254	[[image:image-20220524094641-12.png||height="402" width="718"]]
1255	1255
1256		-
1257	1257	**Step 3**: Create an account or log in Mydevices.
1258	1258
1259	1259	**Step 4**: Search LT-22222-L(for both LT-22222-L / LT-33222-L) and add DevEUI.(% style="display:none" %)
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1877	1877	(((
1878	1878	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.
1879	1879
1880		-
1881		-== 5.5 Can i use point to point communication for LT-22222-L? ==
1882		-
1883		-Yes, please refer [[Point to Point Communication>>doc:Main. Point to Point Communication of LT-22222-L.WebHome]]
1884		-
1885	1885
1886	1886	)))
1887	1887