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51	51	== 1.2  Specifications ==
52	52
53	53	(((
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54	54	**Hardware System:**
55	55	)))
56	56
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73	73	)))
74	74	)))
75	75
	78	+
76	76	(((
77	77	**Interface for Model: LT22222-L:**
78	78	)))
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96	96	Power Input 7~~ 24V DC.
97	97	)))
98	98
	102	+
99	99	(((
100	100	**LoRa Spec:**
101	101	)))
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160	160
161	161	)))
162	162
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	168	+
163	163	== 1.3 Features ==
164	164
165	165	* LoRaWAN Class A & Class C protocol
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170	170	* Firmware upgradable via program port
171	171	* Counting
172	172
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	180	+
173	173	== 1.4  Applications ==
174	174
175	175	* Smart Buildings & Home Automation
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179	179	* Smart Cities
180	180	* Smart Factory
181	181
	190	+
	191	+
182	182	== 1.5 Hardware Variants ==
183	183
184	184	(% border="1" style="background-color:#f7faff; width:500px" %)
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192	192	* 1 x Counting Port
193	193	)))
194	194
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	206	+
195	195	= 2. Power ON Device =
196	196
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]]
204	204
205	205
	218	+
206	206	= 3. Operation Mode =
207	207
208	208	== 3.1 How it works? ==
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217	217
218	218	)))
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	233	+
	234	+
220	220	== 3.2 Example to join LoRaWAN network ==
221	221
222	222	(((
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258	258	[[image:1653298044601-602.png||height="405" width="709"]]
259	259
260	260
	276	+
261	261	== 3.3 Uplink Payload ==
262	262
263	263	There are five working modes + one interrupt mode on LT for different type application:
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269	269	* **MOD5**: Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
270	270	* **ADDMOD6**: Trigger Mode, Optional, used together with MOD1 ~~ MOD5
271	271
	288	+
	289	+
272	272	=== 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
273	273
274	274	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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304	304	* [1] RO1 relay channel is close and the RO1 LED is ON.
305	305	* [0] RO2 relay channel is open and RO2 LED is OFF;
306	306
	325	+
307	307	**LT22222-L:**
308	308
309	309	* [1] DI2 channel is high input and DI2 LED is ON;
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319	319	** DO1 is high in case there is load between DO1 and V+.
320	320	** DO1 LED is off in both case
321	321
	341	+
	342	+
322	322	=== 3.3.2 AT+MOD~=2, (Double DI Counting) ===
323	323
324	324	**For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
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412	412	)))
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	436	+
415	415	=== 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
416	416
417	417	**LT22222-L**: This mode the DI1 is used as a counting pin.
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456	456
457	457	)))
458	458
	481	+
	482	+
459	459	=== 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
460	460
461	461	**LT22222-L**: This mode the DI1 is used as a counting pin.
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537	537	)))
538	538
539	539
	564	+
540	540	=== 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
541	541
542	542	**LT22222-L**: This mode the DI1 is used as a counting pin.
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581	581
582	582	)))
583	583
	609	+
	610	+
584	584	=== 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
585	585
586	586	(% style="color:#4f81bd" %)**This mode is an optional mode for trigger purpose. It can run together with other mode.**
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704	704	When device got this command, it will send the MOD6 payload.
705	705
706	706
	734	+
707	707	=== 3.3.7 Payload Decoder ===
708	708
709	709	(((
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712	712
713	713	)))
714	714
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	744	+
715	715	== 3.4 ​Configure LT via AT or Downlink ==
716	716
717	717	User can configure LT I/O Controller via AT Commands or LoRaWAN Downlink Commands
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724	724
725	725	* (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
726	726
	757	+
	758	+
727	727	=== 3.4.1 Common Commands ===
728	728
729	729	They should be available for each of Dragino Sensors, such as: change uplink interval, reset device. For firmware v1.5.4, user can find what common commands it supports: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
730	730
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732	732	=== 3.4.2 Sensor related commands ===
733	733
734	734	==== 3.4.2.1 Set Transmit Interval ====