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179	179	* Firmware upgradable via program port
180	180	* Counting
181	181
	182	+
	183	+
182	182	== 1.4  Applications ==
183	183
184	184	* Smart Buildings & Home Automation
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188	188	* Smart Cities
189	189	* Smart Factory
190	190
	193	+
	194	+
191	191	== 1.5 Hardware Variants ==
192	192
193	193	(% border="1" style="background-color:#f7faff; width:500px" %)
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201	201	* 1 x Counting Port
202	202	)))
203	203
	208	+
	209	+
204	204	= 2. Power ON Device =
205	205
206	206	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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218	218	== 3.1 How it works? ==
219	219
220	220	(((
221		-The LT is configured as LoRaWAN OTAA Class C mode by default. It has OTAA keys to join network. To connect a local LoRaWAN network, user just need to input the OTAA keys in the network server and power on the LT. It will auto join the network via OTAA. For LT-22222-L, the LED will show the Join status: After power on (% style="color:green" %)**TX LED**(%%) will fast blink 5 times, LT-22222-L will enter working mode and start to JOIN LoRaWAN network. (% style="color:green" %)**TX LED**(%%) will be on for 5 seconds after joined in network. When there is message from server, the RX LED will be on for 1 second.
	227	+The LT is configured as LoRaWAN OTAA Class C mode by default. It has OTAA keys to join network. To connect a local LoRaWAN network, user just need to input the OTAA keys in the network server and power on the LT. It will auto join the network via OTAA. For LT-22222-L, the LED will show the Join status: After power on **TX LED** will fast blink 5 times, LT-22222-L will enter working mode and start to JOIN LoRaWAN network. **TX LED** will be on for 5 seconds after joined in network. When there is message from server, the **RX LED** will be on for 1 second.
222	222	)))
223	223
224	224	(((
225		-In case user can't set the OTAA keys in the network server and has to use the existing keys from server. User can [[use AT Command>>||anchor="H4.UseATCommand"]] to set the keys in the devices.
	231	+In case user can’t set the OTAA keys in the network server and has to use the existing keys from server. User can [[use AT Command>>||anchor="H4.UseATCommand"]] to set the keys in the devices.
226	226	)))
227	227
228	228
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274	274
275	275	There are five working modes + one interrupt mode on LT for different type application:
276	276
277		-* (% style="color:blue" %)**MOD1**(%%): (default setting): 2 x ACI + 2AVI + DI + DO + RO
278		-* (% style="color:blue" %)**MOD2**(%%): Double DI Counting + DO + RO
279		-* (% style="color:blue" %)**MOD3**(%%): Single DI Counting + 2 x ACI + DO + RO
280		-* (% style="color:blue" %)**MOD4**(%%): Single DI Counting + 1 x Voltage Counting + DO + RO
281		-* (% style="color:blue" %)**MOD5**(%%): Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
282		-* (% style="color:blue" %)**ADDMOD6**(%%): Trigger Mode, Optional, used together with MOD1 ~~ MOD5
	283	+* **MOD1**: (default setting): 2 x ACI + 2AVI + DI + DO + RO
	284	+* **MOD2**: Double DI Counting + DO + RO
	285	+* **MOD3**: Single DI Counting + 2 x ACI + DO + RO
	286	+* **MOD4**: Single DI Counting + 1 x Voltage Counting + DO + RO
	287	+* **MOD5**: Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
	288	+* **ADDMOD6**: Trigger Mode, Optional, used together with MOD1 ~~ MOD5
283	283
284	284
285		-
286	286	=== 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
287	287
288	288	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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321	321	* [1] RO1 relay channel is close and the RO1 LED is ON.
322	322	* [0] RO2 relay channel is open and RO2 LED is OFF;
323	323
324		-
325		-
326	326	**LT22222-L:**
327	327
328	328	* [1] DI2 channel is high input and DI2 LED is ON;
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339	339	** DO1 LED is off in both case
340	340
341	341
342		-
343	343	=== 3.3.2 AT+MOD~=2, (Double DI Counting) ===
344	344
345	345
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413	413	[[image:image-20220523181246-5.png]]
414	414
415	415	(((
416		-
417		-
418	418	(% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
419	419	)))
420	420
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428	428	(% style="color:red" %)Note: DO3 is not valid for LT-22222-L.
429	429	)))
430	430
431		-
432	432	(((
433	433	**To use counting mode, please run:**
434	434	)))
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561	561
562	562	For example, if user has configured below commands:
563	563
564		-* **AT+MOD=1 ** **~-~->**  The normal working mode
565		-* **AT+ADDMOD6=1**   **~-~->**  Enable trigger
	563	+* **AT+MOD=1 ** **~-~->** The normal working mode
	564	+* **AT+ADDMOD6=1**   **~-~->** Enable trigger
566	566
567	567	LT will keep monitoring AV1/AV2/AC1/AC2 every 5 seconds; LT will send uplink packets in two cases:
568	568
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710	710
711	711	* (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
712	712
	712	+
713	713	=== 3.4.1 Common Commands ===
714	714
715	715	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]]