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...	...	@@ -43,11 +43,9 @@
43	43	**Hardware System:**
44	44
45	45	* STM32L072CZT6 MCU
46		-* SX1276/78 Wireless Chip
	46	+* SX1276/78 Wireless Chip
47	47	* Power Consumption:
48	48	** Idle: 4mA@12v
49		-
50		-*
51	51	** 20dB Transmit: 34mA@12v
52	52
53	53	**Interface for Model: LT22222-L:**
...	...	@@ -57,7 +57,7 @@
57	57	* 2 x Relay Output (5A@250VAC / 30VDC)
58	58	* 2 x 0~~20mA Analog Input (res:0.01mA)
59	59	* 2 x 0~~30V Analog Input (res:0.01v)
60		-* Power Input 7~~ 24V DC.
	58	+* Power Input 7~~ 24V DC.
61	61
62	62	**LoRa Spec:**
63	63
...	...	@@ -102,8 +102,8 @@
102	102	== 1.5 Hardware Variants ==
103	103
104	104	(% border="1" style="background-color:#f7faff; width:500px" %)
105		-|(% style="width:103px" %)**Model**|(% style="width:131px" %)**Photo**|(% style="width:329px" %)**Description**
106		-|(% style="width:103px" %)**LT22222-L**|(% style="width:131px" %)[[image:1653296302983-697.png]]|(% style="width:329px" %)(((
	103	+|(% style="width:103px" %)**Model**|(% style="width:131px" %)**Photo**|(% style="width:334px" %)**Description**
	104	+|(% style="width:103px" %)**LT22222-L**|(% style="width:131px" %)[[image:1653296302983-697.png]]|(% style="width:334px" %)(((
107	107	* 2 x Digital Input (Bi-direction)
108	108	* 2 x Digital Output
109	109	* 2 x Relay Output (5A@250VAC / 30VDC)
...	...	@@ -112,127 +112,82 @@
112	112	* 1 x Counting Port
113	113	)))
114	114
	113	+= 2. Power ON Device =
115	115
116		-
117		-1.
118		-11. Firmware Change log
119		-
120		-[[**LT Image files**>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]]**:**
121		-
122		-http:~/~/www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/
123		-
124		-
125		-**Change log:**
126		-
127		-[[http:~~/~~/www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/&file=changelog>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/&file=changelog]]
128		-
129		-
130		-
131		-1. Power ON Device
132		-
133		-
134	134	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.
135	135
	117	+(((
136	136	PWR will on when device is properly powered.
	119	+)))
137	137
138		-[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image004.png]]
	121	+[[image:1653297104069-180.png]]
139	139
	123	+= 3. Operation Mode =
140	140
	125	+== 3.1 How it works? ==
141	141
	127	+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.
142	142
143		-
144		-1. Operation Mode
145		-11. How it works?
146		-
147		-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.
148		-
149		-
150	150	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>>path:#AT_Command]] to set the keys in the devices.
151	151
	131	+3.2 Example to join LoRaWAN network
152	152
153		-1.
154		-11. Example to join LoRaWAN network
	133	+This chapter shows an example for how to join the TTN LoRaWAN Network. Below is the network structure, we use our LG308 as LoRaWAN gateway here.
155	155
156		-This chapter shows an example for how to join the TTN LoRaWAN Network. Below is the network structure, we use our LG308 as LoRaWAN gateway here.
	135	+[[image:image-20220523172350-1.png||height="266" width="864"]]
157	157
158		-[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image005.png]]
159	159
160		-
	138	+(((
161	161	The LG308 is already set to connect to [[TTN network >>url:https://www.thethingsnetwork.org/]]. So what we need to do now is only configure register this device to TTN:
	140	+)))
162	162
	142	+(((
163	163	**Step 1**: Create a device in TTN with the OTAA keys from LT IO controller.
	144	+)))
164	164
	146	+(((
165	165	Each LT is shipped with a sticker with the default device EUI as below:
	148	+)))
166	166
167		-[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image006.png]]
	150	+[[image:1653297924498-393.png]]
168	168
169		-
170		-
171		-
172	172	Input these keys in the LoRaWAN Server portal. Below is TTN screen shot:
173	173
174	174	Add APP EUI in the application.
175	175
176		-[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image007.png]]
	156	+[[image:1653297955910-247.png||height="321" width="716"]]
177	177
178	178	Add APP KEY and DEV EUI
179	179
180		-[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image008.png]]
	160	+[[image:1653298023685-319.png]]
181	181
	162	+(((
182	182	**Step 2**: Power on LT and it will auto join to the TTN network. After join success, it will start to upload message to TTN and user can see in the panel.
	164	+)))
183	183
184		-[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image009.png]]
	166	+[[image:1653298044601-602.png||height="405" width="709"]]
185	185
	168	+== 3.3 Uplink Payload ==
186	186
187		-1.
188		-11. Uplink Payload
189		-
190	190	There are five working modes + one interrupt mode on LT for different type application:
191	191
192		-* [[MOD1>>path:#MOD1]]: (default setting): 2 x ACI + 2AVI + DI + DO + RO
193		-* [[MOD2>>path:#MOD2]]: Double DI Counting + DO + RO
194		-* [[MOD3>>path:#MOD3]]: Single DI Counting + 2 x ACI + DO + RO
195		-* [[MOD4>>path:#MOD4]]: Single DI Counting + 1 x Voltage Counting + DO + RO
196		-* [[MOD5>>path:#MOD5]]: Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
197		-* [[ADDMOD6>>path:#MOD6]]: Trigger Mode, Optional, used together with MOD1 ~~ MOD5
	172	+* **MOD1**: (default setting): 2 x ACI + 2AVI + DI + DO + RO
	173	+* **MOD2**: Double DI Counting + DO + RO
	174	+* **MOD3**: Single DI Counting + 2 x ACI + DO + RO
	175	+* **MOD4**: Single DI Counting + 1 x Voltage Counting + DO + RO
	176	+* **MOD5**: Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
	177	+* **ADDMOD6**: Trigger Mode, Optional, used together with MOD1 ~~ MOD5
198	198
	179	+=== 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
199	199
200		-1.
201		-11.
202		-111. AT+MOD=1, 2ACI+2AVI
203		-
204	204	The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default.
205	205
	183	+[[image:image-20220523174024-3.png]]
206	206
207		-|Size(bytes)|2|2|2|2|1|1|1
208		-|Value|(((
209		-AVI1
	185	+(% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
210	210
211		-voltage
212		-)))|(((
213		-AVI2
	187	+[[image:image-20220523174254-4.png]]
214	214
215		-voltage
216		-)))|(((
217		-ACI1
218		-
219		-Current
220		-)))|(((
221		-ACI2
222		-
223		-Current
224		-)))|DIDORO*|(((
225		-Reserve
226		-
227		-
228		-)))|MOD
229		-
230		-
231		-**DIDORO** is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
232		-
233		-|bit7|bit6|bit5|bit4|bit3|bit2|bit1|bit0
234		-|RO1|RO2|DI3|DI2|DI1|DO3|DO2|DO1
235		-
236	236	* RO is for relay. ROx=1 : close，ROx=0 always open.
237	237	* DI is for digital input. DIx=1: high or float, DIx=0: low.
238	238	* DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
...	...	@@ -242,7 +242,7 @@
242	242
243	243	For example if payload is: 04 AB 04 AC 13 10 13 00 AA FF 01
244	244
245		-The value for the interface is:
	198	+The value for the interface is:
246	246
247	247	AVI1 channel voltage is 0x04AB/1000=1195（DEC）/1000=1.195V
248	248
...	...	@@ -268,7 +268,6 @@
268	268	* [1] DI2 channel is high input and DI2 LED is ON;
269	269	* [0] DI1 channel is low input;
270	270
271		-
272	272	* [0] DO3 channel output state
273	273	** DO3 is float in case no load between DO3 and V+.;
274	274	** DO3 is high in case there is load between DO3 and V+.
...	...	@@ -280,9 +280,8 @@
280	280	** DO1 LED is off in both case
281	281
282	282
283		-
284		-1.
285		-11.
	235	+1.
	236	+11.
286	286	111. AT+MOD=2, (Double DI Counting)
287	287
288	288	**For LT-33222-L**: this mode the **DI3** is used as a counting pin. Counting on DI3 reflect in COUNT1.
...	...	@@ -292,6 +292,7 @@
292	292
293	293	Total : 11 bytes payload
294	294
	246	+(% border="1" style="background-color:#f7faff; height:10px; width:500px" %)
295	295	|Size(bytes)|4|4|1|1|1
296	296	|Value|COUNT1|COUNT2 |DIDORO*|(((
297	297	Reserve
...	...	@@ -299,9 +299,9 @@
299	299
300	300	)))|MOD
301	301
302		-
303	303	**DIDORO** is a combination for RO1, RO2, DO3, DO2 and DO1. Totally 1bytes as below
304	304
	256	+(% border="1" style="background-color:#f7faff" %)
305	305	|bit7|bit6|bit5|bit4|bit3|bit2|bit1|bit0
306	306	|RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
307	307
...	...	@@ -354,8 +354,8 @@
354	354
355	355
356	356
357		-1.
358		-11.
	309	+1.
	310	+11.
359	359	111. AT+MOD=3, Single DI Counting + 2 x ACI
360	360
361	361	**LT33222-L**: This mode the DI3 is used as a counting pin.
...	...	@@ -363,6 +363,7 @@
363	363	**LT22222-L**: This mode the DI1 is used as a counting pin.
364	364
365	365
	318	+(% border="1" style="background-color:#f7faff" %)
366	366	|Size(bytes)|4|2|2|1|1|1
367	367	|Value|COUNT1|(((
368	368	ACI1
...	...	@@ -374,9 +374,9 @@
374	374	Current
375	375	)))|DIDORO*|Reserve|MOD
376	376
377		-
378	378	**DIDORO** is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
379	379
	332	+(% border="1" style="background-color:#f7faff" %)
380	380	|bit7|bit6|bit5|bit4|bit3|bit2|bit1|bit0
381	381	|RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
382	382
...	...	@@ -399,8 +399,8 @@
399	399
400	400
401	401
402		-1.
403		-11.
	355	+1.
	356	+11.
404	404	111. AT+MOD=4, Single DI Counting + 1 x Voltage Counting
405	405
406	406	**LT33222-L**: This mode the DI3 is used as a counting pin.
...	...	@@ -411,6 +411,7 @@
411	411	The AVI1 is also used for counting. AVI1 is used to monitor the voltage. It will check the voltage **every 60s**, if voltage is higher or lower than VOLMAX mV, the AVI1 Counting increase 1, so AVI1 counting can be used to measure a machine working hour.
412	412
413	413
	367	+(% border="1" style="background-color:#f7faff" %)
414	414	|Size(bytes)|4|4|1|1|1
415	415	|Value|COUNT1|AVI1 Counting|DIDORO*|(((
416	416	Reserve
...	...	@@ -418,9 +418,9 @@
418	418
419	419	)))|MOD
420	420
421		-
422	422	**DIDORO** is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
423	423
	377	+(% border="1" style="background-color:#f7faff" %)
424	424	|bit7|bit6|bit5|bit4|bit3|bit2|bit1|bit0
425	425	|RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
426	426
...	...	@@ -453,16 +453,16 @@
453	453
454	454
455	455
456		-1.
457		-11.
	410	+1.
	411	+11.
458	458	111. AT+MOD=5, Single DI Counting + 2 x AVI + 1 x ACI
459	459
460		-
461	461	**LT33222-L**: This mode the DI3 is used as a counting pin.
462	462
463	463	**LT22222-L**: This mode the DI1 is used as a counting pin.
464	464
465	465
	419	+(% border="1" style="background-color:#f7faff" %)
466	466	|Size(bytes)|2|2|2|2|1|1|1
467	467	|Value|(((
468	468	AVI1
...	...	@@ -483,9 +483,9 @@
483	483	)))|MOD
484	484
485	485
486		-
487	487	**DIDORO** is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
488	488
	442	+(% border="1" style="background-color:#f7faff" %)
489	489	|bit7|bit6|bit5|bit4|bit3|bit2|bit1|bit0
490	490	|RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
491	491
...	...	@@ -509,11 +509,10 @@
509	509
510	510
511	511
512		-1.
513		-11.
	466	+1.
	467	+11.
514	514	111. AT+ADDMOD=6. (Trigger Mode, Optional)
515	515
516		-
517	517	**This mode is an optional mode for trigger purpose. It can run together with other mode.**
518	518
519	519	For example, if user has configured below commands:
...	...	@@ -521,13 +521,11 @@
521	521	* AT+MOD=1   à The normal working mode
522	522	* AT+ADDMOD6=1    à Enable trigger
523	523
524		-
525	525	LT will keep monitoring AV1/AV2/AC1/AC2 every 5 seconds; LT will send uplink packets in two cases:
526	526
527	527	1. Periodically uplink (Base on TDC time). Payload is same as the normal MOD (MOD 1 for above command). This uplink uses LoRaWAN **unconfirmed** data type
528	528	1. Trigger uplink when meet the trigger condition. LT will sent two packets in this case, the first uplink use payload specify in this mod (mod=6), the second packets use the normal mod payload(MOD=1 for above settings). Both Uplinks use LoRaWAN **CONFIRMED data type.**
529	529
530		-
531	531	**AT Command to set Trigger Condition**:
532	532
533	533	**Trigger base on voltage**:
...	...	@@ -598,6 +598,7 @@
598	598
599	599	MOD6 Payload : total 11 bytes payload
600	600
	552	+(% border="1" style="background-color:#f7faff" %)
601	601	|Size(bytes)|1|1|1|6|1|1
602	602	|Value|(((
603	603	TRI_A
...	...	@@ -618,9 +618,9 @@
618	618	)))
619	619
620	620
621		-
622	622	**TRI FLAG1** is a combination to show if trigger is set for this part. Totally 1byte as below
623	623
	575	+(% border="1" style="background-color:#f7faff" %)
624	624	|bit7|bit6|bit5|bit4|bit3|bit2|bit1|bit0
625	625	|(((
626	626	AV1_
...	...	@@ -665,6 +665,7 @@
665	665
666	666	**TRI Status1** is a combination to show which condition is trigger. Totally 1byte as below
667	667
	620	+(% border="1" style="background-color:#f7faff" %)
668	668	|bit7|bit6|bit5|bit4|bit3|bit2|bit1|bit0
669	669	|(((
670	670	AV1_
...	...	@@ -711,6 +711,7 @@
711	711
712	712	**TRI_DI FLAG+STA **is a combination to show which condition is trigger. Totally 1byte as below
713	713
	667	+(% border="1" style="background-color:#f7faff" %)
714	714	|bit7|bit6|bit5|bit4|bit3|bit2|bit1|bit0
715	715	|N/A|N/A|N/A|N/A|DI2_STATUS|DI2_FLAG|DI1_STATUS|DI1_FLAG
716	716
...	...	@@ -733,11 +733,10 @@
733	733	When device got this command, it will send the MOD6 payload.
734	734
735	735
736		-1.
737		-11.
	690	+1.
	691	+11.
738	738	111. Payload Decoder
739	739
740		-
741	741	**Decoder for TTN/loraserver/ChirpStack**: [[http:~~/~~/www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/Payload_decoder/>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/Payload_decoder/]]
742	742
743	743
...	...	@@ -746,7 +746,7 @@
746	746
747	747
748	748
749		-1.
	702	+1.
750	750	11. ​Configure LT via AT or Downlink
751	751
752	752	User can configure LT I/O Controller via [[AT Commands >>path:#_​Using_the_AT]]or LoRaWAN Downlink Commands
...	...	@@ -757,20 +757,17 @@
757	757
758	758	* **Sensor Related Commands**: These commands are special designed for LT-22222-L.  User can see these commands below:
759	759
760		-
761		-1.
762		-11.
	713	+1.
	714	+11.
763	763	111. Common Commands:
764	764
765		-
766	766	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: http:~/~/wiki.dragino.com/index.php?title=End_Device_AT_Commands_and_Downlink_Commands
767	767
768	768
769		-1.
770		-11.
	720	+1.
	721	+11.
771	771	111. Sensor related commands:
772	772
773		-
774	774	==== Set Transmit Interval ====
775	775
776	776	Set device uplink interval.
...	...	@@ -970,6 +970,7 @@
970	970
971	971	01: Low,  00: High ,  11: No action
972	972
	923	+(% border="1" style="background-color:#f7faff" %)
973	973	|Downlink Code|DO1|DO2|DO3
974	974	|02  01  00  11|Low|High|No Action
975	975	|02  00  11  01|High|No Action|Low
...	...	@@ -1007,22 +1007,23 @@
1007	1007
1008	1008	**Third Byte**: Control Method and Ports status:
1009	1009
	961	+(% border="1" style="background-color:#f7faff" %)
1010	1010	|Second Byte|Status
1011	1011	|0x01|DO1 set to low
1012	1012	|0x00|DO1 set to high
1013	1013	|0x11|DO1 NO Action
1014	1014
1015		-
1016	1016	**Fourth Byte**: Control Method and Ports status:
1017	1017
	969	+(% border="1" style="background-color:#f7faff" %)
1018	1018	|Second Byte|Status
1019	1019	|0x01|DO2 set to low
1020	1020	|0x00|DO2 set to high
1021	1021	|0x11|DO2 NO Action
1022	1022
1023		-
1024	1024	**Fifth Byte**: Control Method and Ports status:
1025	1025
	977	+(% border="1" style="background-color:#f7faff" %)
1026	1026	|Second Byte|Status
1027	1027	|0x01|DO3 set to low
1028	1028	|0x00|DO3 set to high
...	...	@@ -1075,6 +1075,7 @@
1075	1075
1076	1076	01: Close ,  00: Open , 11: No action
1077	1077
	1030	+(% border="1" style="background-color:#f7faff" %)
1078	1078	|Downlink Code|RO1|RO2
1079	1079	|03  00  11|Open|No Action
1080	1080	|03  01  11|Close|No Action
...	...	@@ -1112,6 +1112,7 @@
1112	1112
1113	1113	**Third Byte(bb)**: Control Method and Ports status:
1114	1114
	1068	+(% border="1" style="background-color:#f7faff" %)
1115	1115	|Value|Status
1116	1116	|0x11|RO1 and RO2 to NO
1117	1117	|0x10|RO2 to NO, RO1 to NC
...	...	@@ -1122,7 +1122,6 @@
1122	1122	|0x02|RO1 to NC, RO2 No Action
1123	1123	|0x12|RO1 to NO, RO2 No Action
1124	1124
1125		-
1126	1126	**Fourth / Fifth Bytes (cc)**: Latching time. Unit: ms
1127	1127
1128	1128	Device will upload a packet if downlink code executes successfully.
...	...	@@ -1224,10 +1224,9 @@
1224	1224
1225	1225
1226	1226
1227		-1.
	1180	+1.
1228	1228	11. Integrate with Mydevice
1229	1229
1230		-
1231	1231	Mydevices provides a human friendly interface to show the sensor data, once we have data in TTN, we can use Mydevices to connect to TTN and see the data in Mydevices. Below are the steps:
1232	1232
1233	1233
...	...	@@ -1272,7 +1272,7 @@
1272	1272	[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image018.png]]
1273	1273
1274	1274
1275		-1.
	1227	+1.
1276	1276	11. Interface Detail
1277	1277	111. Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active )
1278	1278
...	...	@@ -1282,8 +1282,8 @@
1282	1282
1283	1283
1284	1284
1285		-1.
1286		-11.
	1237	+1.
	1238	+11.
1287	1287	111. Digital Input Port: DI1/DI2 ( For LT-22222-L)
1288	1288
1289	1289	The DI port of LT-22222-L can support NPN or PNP output sensor.
...	...	@@ -1325,7 +1325,7 @@
1325	1325
1326	1326	**Example3**: Connect to a 220v high active sensor.公司测试一下
1327	1327
1328		-Assume user want to monitor an active signal higher than 220v, to make sure not burn the photocoupler
	1280	+Assume user want to monitor an active signal higher than 220v, to make sure not burn the photocoupler
1329	1329
1330	1330	* Connect sensor’s output to DI1+ with a serial 50K resistor
1331	1331	* Connect sensor’s GND DI1-.
...	...	@@ -1337,8 +1337,8 @@
1337	1337	If sensor output is 220v, the //IF//[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image022.png]] = 4.3mA , So the LT-22222-L will be able to detect this high active signal safely.
1338	1338
1339	1339
1340		-1.
1341		-11.
	1292	+1.
	1293	+11.
1342	1342	111. Digital Output Port: DO1/DO2 /DO3
1343	1343
1344	1344	NPN output: GND or Float. Max voltage can apply to output pin is 36v.
...	...	@@ -1348,8 +1348,8 @@
1348	1348
1349	1349
1350	1350
1351		-1.
1352		-11.
	1303	+1.
	1304	+11.
1353	1353	111. Analog Input Interface
1354	1354
1355	1355	The analog input interface is as below. The LT will measure the IN2 voltage so to calculate the current pass the Load. The formula is:
...	...	@@ -1381,8 +1381,8 @@
1381	1381
1382	1382
1383	1383
1384		-1.
1385		-11.
	1336	+1.
	1337	+11.
1386	1386	111. Relay Output
1387	1387
1388	1388	The LT serial controller has two relay interfaces; each interface uses two pins of the screw terminal. User can connect other device’s Power Line to in serial of RO1_1 and RO_2. Such as below:
...	...	@@ -1396,10 +1396,10 @@
1396	1396
1397	1397
1398	1398
1399		-1.
	1351	+1.
1400	1400	11. LEDs Indicators
1401	1401
1402		-
	1354	+(% border="1" style="background-color:#f7faff" %)
1403	1403	|**LEDs**|**Feature**
1404	1404	|**PWR**|Always on if there is power
1405	1405	|**SYS**|After device is powered on, the SYS will **fast blink in GREEN** for 5 times, means RS485-LN start to join LoRaWAN network. If join success, SYS will be **on GREEN for 5 seconds. **SYS will **blink Blue** on every upload and **blink Green** once receive a downlink message.
...	...	@@ -1435,7 +1435,6 @@
1435	1435
1436	1436
1437	1437
1438		-
1439	1439	1. Use AT Command
1440	1440	11. Access AT Command
1441	1441
...	...	@@ -1545,7 +1545,7 @@
1545	1545
1546	1546
1547	1547
1548		-1.
	1499	+1.
1549	1549	11. Common AT Command Sequence
1550	1550	111. Multi-channel ABP mode (Use with SX1301/LG308)
1551	1551
...	...	@@ -1568,8 +1568,8 @@
1568	1568
1569	1569	ATZ
1570	1570
1571		-1.
1572		-11.
	1522	+1.
	1523	+11.
1573	1573	111. Single-channel ABP mode (Use with LG01/LG02)
1574	1574
1575	1575	123456   Enter Password to have AT access.
...	...	@@ -1608,11 +1608,10 @@
1608	1608	[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image031.png]]
1609	1609
1610	1610
1611		-1.
1612		-11.
	1562	+1.
	1563	+11.
1613	1613	111. Change to Class A
1614	1614
1615		-
1616	1616	If sensor JOINED
1617	1617
1618	1618	AT+CLASS=A
...	...	@@ -1625,8 +1625,7 @@
1625	1625
1626	1626	1. FAQ
1627	1627
1628		-
1629		-1.
	1578	+1.
1630	1630	11. How to upgrade the image?
1631	1631
1632	1632	The LT LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to LT to:
...	...	@@ -1635,7 +1635,6 @@
1635	1635	* For bug fix
1636	1636	* Change LoRaWAN bands.
1637	1637
1638		-
1639	1639	Below shows the hardware connection for how to upload an image to the LT:
1640	1640
1641	1641	[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image029.png]]
...	...	@@ -1680,13 +1680,13 @@
1680	1680	[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image038.png]]
1681	1681
1682	1682
1683		-1.
	1631	+1.
1684	1684	11. How to change the LoRa Frequency Bands/Region?
1685	1685
1686	1686	User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
1687	1687
1688	1688
1689		-1.
	1637	+1.
1690	1690	11. How to set up LT to work with Single Channel Gateway such as LG01/LG02?
1691	1691
1692	1692	In this case, users need to set LT-33222-L to work in ABP mode & transmit in only one frequency.
...	...	@@ -1729,7 +1729,7 @@
1729	1729
1730	1730
1731	1731
1732		-1.
	1680	+1.
1733	1733	11. Can I see counting event in Serial?
1734	1734
1735	1735	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.
...	...	@@ -1745,7 +1745,7 @@
1745	1745	[[http:~~/~~/wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#How_it_work>>url:http://wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#How_it_work]]
1746	1746
1747	1747
1748		-1.
	1696	+1.
1749	1749	11. Have trouble to upload image.
1750	1750
1751	1751	See this link for trouble shooting:
...	...	@@ -1753,7 +1753,7 @@
1753	1753	[[http:~~/~~/wiki.dragino.com/index.php?title=Firmware_Upgrade_Trouble_Shooting#UART_upgrade_trouble_shooting>>url:http://wiki.dragino.com/index.php?title=Firmware_Upgrade_Trouble_Shooting#UART_upgrade_trouble_shooting]]
1754	1754
1755	1755
1756		-1.
	1704	+1.
1757	1757	11. Why I can’t join TTN in US915 /AU915 bands?
1758	1758
1759	1759	It might be about the channels mapping. Please see this link for detail:
...	...	@@ -1765,7 +1765,6 @@
1765	1765
1766	1766	1. Order Info
1767	1767
1768		-
1769	1769	**For LT-33222-L-XXX or LT-22222-L-XXX:**
1770	1770
1771	1771	**XXX:**
...	...	@@ -1780,7 +1780,6 @@
1780	1780	* **IN865**: LT with frequency bands IN865
1781	1781	* **CN779**: LT with frequency bands CN779
1782	1782
1783		-
1784	1784	1. Packing Info
1785	1785
1786	1786	**Package Includes**:
...	...	@@ -1790,7 +1790,6 @@
1790	1790	* Bracket for controller x1
1791	1791	* Program cable x 1
1792	1792
1793		-
1794	1794	**Dimension and weight**:
1795	1795
1796	1796	* Device Size: 13.5 x 7 x 3 cm
...	...	@@ -1798,7 +1798,6 @@
1798	1798	* Package Size / pcs : 14.5 x 8 x 5 cm
1799	1799	* Weight / pcs : 170g
1800	1800
1801		-
1802	1802	1. Support
1803	1803
1804	1804	* Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.

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