Last modified by Saxer Lin on 2025/04/15 17:24
<
From version < 112.3 >
edited by Xiaoling
on 2023/03/31 09:39
To version < 118.12 >
edited by Xiaoling
on 2023/05/17 11:36
>
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -26,7 +26,7 @@
26 26  )))
27 27  
28 28  (((
29 -The LT I/O Controllers allows the user to send data and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, smartphone detection, building automation, and so on.
29 +The LT I/O Controllers allows the user to send data and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, building automation, and so on.
30 30  )))
31 31  
32 32  (((
... ... @@ -176,29 +176,47 @@
176 176  
177 177  
178 178  * LoRaWAN Class A & Class C protocol
179 +
179 179  * Optional Customized LoRa Protocol
181 +
180 180  * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/RU864/IN865/MA869
183 +
181 181  * AT Commands to change parameters
185 +
182 182  * Remote configure parameters via LoRa Downlink
187 +
183 183  * Firmware upgradable via program port
189 +
184 184  * Counting
185 185  
192 +
193 +
186 186  == 1.4  Applications ==
187 187  
188 188  
189 189  * Smart Buildings & Home Automation
198 +
190 190  * Logistics and Supply Chain Management
200 +
191 191  * Smart Metering
202 +
192 192  * Smart Agriculture
204 +
193 193  * Smart Cities
206 +
194 194  * Smart Factory
195 195  
209 +
210 +
196 196  == 1.5 Hardware Variants ==
197 197  
198 198  
199 -(% border="1" style="background-color:#f7faff; width:500px" %)
200 -|(% style="width:103px" %)**Model**|(% style="width:131px" %)**Photo**|(% style="width:334px" %)**Description**
201 -|(% style="width:103px" %)**LT22222-L**|(% style="width:131px" %)[[image:1653296302983-697.png]]|(% style="width:334px" %)(((
214 +(% border="1" style="background-color:#f2f2f2; width:500px" %)
215 +|(% style="background-color:#d9e2f3; color:#0070c0; width:103px" %)**Model**|(% style="background-color:#d9e2f3; color:#0070c0; width:131px" %)**Photo**|(% style="background-color:#d9e2f3; color:#0070c0; width:334px" %)**Description**
216 +|(% style="width:103px" %)**LT22222-L**|(% style="width:131px" %)(((
217 +(% style="text-align:center" %)
218 +[[image:image-20230424115112-1.png||height="106" width="58"]]
219 +)))|(% style="width:334px" %)(((
202 202  * 2 x Digital Input (Bi-direction)
203 203  * 2 x Digital Output
204 204  * 2 x Relay Output (5A@250VAC / 30VDC)
... ... @@ -207,6 +207,8 @@
207 207  * 1 x Counting Port
208 208  )))
209 209  
228 +
229 +
210 210  = 2. Power ON Device =
211 211  
212 212  
... ... @@ -263,7 +263,7 @@
263 263  Each LT is shipped with a sticker with the default device EUI as below:
264 264  )))
265 265  
266 -[[image:1653297924498-393.png]]
286 +[[image:image-20230425173427-2.png||height="246" width="530"]]
267 267  
268 268  
269 269  Input these keys in the LoRaWAN Server portal. Below is TTN screen shot:
... ... @@ -300,22 +300,43 @@
300 300  * (% style="color:blue" %)**MOD5**(%%): Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
301 301  * (% style="color:blue" %)**ADDMOD6**(%%): Trigger Mode, Optional, used together with MOD1 ~~ MOD5
302 302  
323 +
324 +
303 303  === 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
304 304  
305 305  
306 306  (((
307 -The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default.
329 +The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default. (% style="display:none" %)
330 +
331 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
332 +|**Size(bytes)(% style="display:none" %) (%%)**|**2**|**2**|**2**|**2**|**1**|**1**|**1**
333 +|Value|(((
334 +AVI1
335 +voltage
336 +)))|(((
337 +AVI2
338 +voltage
339 +)))|(((
340 +ACI1
341 +Current
342 +)))|(((
343 +ACI2
344 +Current
345 +)))|DIDORO*|(((
346 +Reserve
347 +)))|MOD
308 308  )))
309 309  
310 -[[image:image-20220523174024-3.png]]
311 -
312 312  (((
313 313  
314 314  
315 315  (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
354 +
355 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
356 +|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
357 +|RO1|RO2|DI3|DI2|DI1|DO3|DO2|DO1
316 316  )))
317 317  
318 -[[image:image-20220523174254-4.png]]
319 319  
320 320  * RO is for relay. ROx=1 : close，ROx=0 always open.
321 321  * DI is for digital input. DIx=1: high or float, DIx=0: low.
... ... @@ -356,6 +356,8 @@
356 356  ** DO1 is high in case there is load between DO1 and V+.
357 357  ** DO1 LED is off in both case
358 358  
400 +
401 +
359 359  === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
360 360  
361 361  
... ... @@ -365,18 +365,28 @@
365 365  
366 366  (((
367 367  Total : 11 bytes payload
368 -)))
369 369  
370 -[[image:image-20220523180452-3.png]]
412 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
413 +|**Size(bytes)**|**4**|**4**|**1**|**1**|**1**
414 +|Value|COUNT1|COUNT2 |DIDORO*|(((
415 +Reserve
371 371  
417 +
418 +)))|MOD
419 +)))
372 372  
373 373  (((
422 +
423 +
374 374  (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DO3, DO2 and DO1. Totally 1bytes as below
375 -)))
376 376  
377 -[[image:image-20220523180506-4.png]]
426 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
427 +|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
428 +|RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
378 378  
379 -* RO is for relay. ROx=1 : close，ROx=0 always open.
430 +RO is for relay. ROx=1 : close，ROx=0 always open.
431 +)))
432 +
380 380  * FIRST: Indicate this is the first packet after join network.
381 381  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
382 382  
... ... @@ -434,15 +434,24 @@
434 434  
435 435  **LT22222-L**: This mode the DI1 is used as a counting pin.
436 436  
437 -[[image:image-20220523181246-5.png]]
490 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
491 +|**Size(bytes)**|**4**|**2**|**2**|**1**|**1**|**1**
492 +|Value|COUNT1|(((
493 +ACI1 Current
494 +)))|(((
495 +ACI2 Current
496 +)))|DIDORO*|Reserve|MOD
438 438  
439 439  (((
440 440  
441 441  
442 442  (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
502 +
503 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
504 +|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
505 +|RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
443 443  )))
444 444  
445 -[[image:image-20220523181301-6.png]]
446 446  
447 447  * RO is for relay. ROx=1 : close，ROx=0 always open.
448 448  * FIRST: Indicate this is the first packet after join network.
... ... @@ -484,16 +484,25 @@
484 484  
485 485  (((
486 486  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.
487 -)))
488 488  
489 -[[image:image-20220523181903-8.png]]
550 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
551 +|**Size(bytes)**|**4**|**4**|**1**|**1**|**1**
552 +|Value|COUNT1|AVI1 Counting|DIDORO*|(((
553 +Reserve
490 490  
555 +
556 +)))|MOD
557 +)))
491 491  
559 +
492 492  (((
493 493  (% style="color:#4f81bd" %)**DIDORO **(%%)is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
562 +
563 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
564 +|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
565 +|RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
494 494  )))
495 495  
496 -[[image:image-20220523181727-7.png]]
497 497  
498 498  * RO is for relay. ROx=1 : close，ROx=0 always open.
499 499  * FIRST: Indicate this is the first packet after join network.
... ... @@ -548,12 +548,29 @@
548 548  
549 549  **LT22222-L**: This mode the DI1 is used as a counting pin.
550 550  
551 -[[image:image-20220523182334-9.png]]
622 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
623 +|**Size(bytes)**|**2**|**2**|**2**|**2**|**1**|**1**|**1**
624 +|Value|(((
625 +AVI1
626 +voltage
627 +)))|(((
628 +AVI2
629 +voltage
630 +)))|(((
631 +ACI1
632 +Current
633 +)))|COUNT1|DIDORO*|(((
634 +Reserve
635 +)))|MOD
552 552  
553 553  (((
554 554  
555 555  
556 556  (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
641 +
642 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
643 +|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
644 +|RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
557 557  )))
558 558  
559 559  * RO is for relay. ROx=1 : close，ROx=0 always open.
... ... @@ -678,12 +678,52 @@
678 678  
679 679  MOD6 Payload : total 11 bytes payload
680 680  
681 -[[image:image-20220524085923-1.png]]
769 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
770 +|**Size(bytes)**|**1**|**1**|**1**|**6**|**1**|**1**
771 +|Value|(((
772 +TRI_A
773 +FLAG
774 +)))|(((
775 +TRI_A
776 +Status
777 +)))|(((
778 +TRI_DI
779 +FLAG+STA
780 +)))|Reserve|Enable/Disable MOD6|(((
781 +MOD
782 +(6)
783 +)))
682 682  
683 683  
684 684  (% style="color:#4f81bd" %)**TRI FLAG1**(%%) is a combination to show if trigger is set for this part. Totally 1byte as below
685 685  
686 -[[image:image-20220524090106-2.png]]
788 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
789 +|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
790 +|(((
791 +AV1_
792 +LOW
793 +)))|(((
794 +AV1_
795 +HIGH
796 +)))|(((
797 +AV2_
798 +LOW
799 +)))|(((
800 +AV2_
801 +HIGH
802 +)))|(((
803 +AC1_
804 +LOW
805 +)))|(((
806 +AC1_
807 +HIGH
808 +)))|(((
809 +AC2_
810 +LOW
811 +)))|(((
812 +AC2_
813 +HIGH
814 +)))
687 687  
688 688  * Each bits shows if the corresponding trigger has been configured.
689 689  
... ... @@ -692,10 +692,35 @@
692 692  10100000: Means the system has configure to use the trigger: AC1_LOW and AV2_LOW
693 693  
694 694  
695 -
696 696  (% style="color:#4f81bd" %)**TRI Status1**(%%) is a combination to show which condition is trigger. Totally 1byte as below
697 697  
698 -[[image:image-20220524090249-3.png]]
825 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
826 +|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
827 +|(((
828 +AV1_
829 +LOW
830 +)))|(((
831 +AV1_
832 +HIGH
833 +)))|(((
834 +AV2_
835 +LOW
836 +)))|(((
837 +AV2_
838 +HIGH
839 +)))|(((
840 +AC1_
841 +LOW
842 +)))|(((
843 +AC1_
844 +HIGH
845 +)))|(((
846 +AC2_
847 +LOW
848 +)))|(((
849 +AC2_
850 +HIGH
851 +)))
699 699  
700 700  * Each bits shows which status has been trigger on this uplink.
701 701  
... ... @@ -706,7 +706,9 @@
706 706  
707 707  (% style="color:#4f81bd" %)**TRI_DI FLAG+STA **(%%)is a combination to show which condition is trigger. Totally 1byte as below
708 708  
709 -[[image:image-20220524090456-4.png]]
862 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
863 +|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
864 +|N/A|N/A|N/A|N/A|DI2_STATUS|DI2_FLAG|DI1_STATUS|DI1_FLAG
710 710  
711 711  * Each bits shows which status has been trigger on this uplink.
712 712  
... ... @@ -752,6 +752,8 @@
752 752  
753 753  * (% style="color:blue" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
754 754  
910 +
911 +
755 755  === 3.4.1 Common Commands ===
756 756  
757 757  
... ... @@ -994,9 +994,14 @@
994 994  
995 995  (((
996 996  01: Low,  00: High ,  11: No action
1154 +
1155 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
1156 +|(% style="background-color:#d9e2f3; color:#0070c0" %)**Downlink Code**|(% style="background-color:#d9e2f3; color:#0070c0" %)**DO1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**DO2**|(% style="background-color:#d9e2f3; color:#0070c0" %)**DO3**
1157 +|02  01  00  11|Low|High|No Action
1158 +|02  00  11  01|High|No Action|Low
1159 +|02  11  01  00|No Action|Low|High
997 997  )))
998 998  
999 -[[image:image-20220524092754-5.png]]
1000 1000  
1001 1001  (((
1002 1002  (% style="color:red" %)**Note: For LT-22222-L, there is no DO3, the last byte can use any value.**
... ... @@ -1034,17 +1034,29 @@
1034 1034  
1035 1035  (% style="color:#4f81bd" %)**Third Byte**(%%): Control Method and Ports status:
1036 1036  
1037 -[[image:image-20220524093238-6.png]]
1199 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1200 +|(% style="background-color:#d9e2f3; color:#0070c0" %)**Second Byte**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Status**
1201 +|0x01|DO1 set to low
1202 +|0x00|DO1 set to high
1203 +|0x11|DO1 NO Action
1038 1038  
1039 1039  
1040 1040  (% style="color:#4f81bd" %)**Fourth Byte**(%%): Control Method and Ports status:
1041 1041  
1042 -[[image:image-20220524093328-7.png]]
1208 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1209 +|(% style="background-color:#d9e2f3; color:#0070c0" %)**Second Byte**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Status**
1210 +|0x01|DO2 set to low
1211 +|0x00|DO2 set to high
1212 +|0x11|DO2 NO Action
1043 1043  
1044 1044  
1045 1045  (% style="color:#4f81bd" %)**Fifth Byte**(%%): Control Method and Ports status:
1046 1046  
1047 -[[image:image-20220524093351-8.png]]
1217 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1218 +|(% style="background-color:#d9e2f3; color:#0070c0" %)**Second Byte**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Status**
1219 +|0x01|DO3 set to low
1220 +|0x00|DO3 set to high
1221 +|0x11|DO3 NO Action
1048 1048  
1049 1049  
1050 1050  (% style="color:#4f81bd" %)**Sixth and Seventh and Eighth and Ninth Byte**:
... ... @@ -1101,10 +1101,21 @@
1101 1101  
1102 1102  (((
1103 1103  01: Close ,  00: Open , 11: No action
1278 +
1279 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:320px" %)
1280 +|(% style="background-color:#d9e2f3; color:#0070c0" %)**Downlink Code**|(% style="background-color:#d9e2f3; color:#0070c0" %)**RO1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**RO2**
1281 +|03  00  11|Open|No Action
1282 +|03  01  11|Close|No Action
1283 +|03  11  00|No Action|Open
1284 +|03  11  01|No Action|Close
1285 +|03  00  00|Open|Open
1286 +|03  01  01|Close|Close
1287 +|03  01  00|Close|Open
1288 +|03  00  01|Open|Close
1104 1104  )))
1105 1105  
1106 1106  (((
1107 -[[image:image-20220524093724-9.png]]
1292 +
1108 1108  )))
1109 1109  
1110 1110  (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
... ... @@ -1523,9 +1523,9 @@
1523 1523  === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1524 1524  
1525 1525  
1526 -**(% style="color:blue" %)NPN output**: GND or Float. Max voltage can apply to output pin is 36v.
1711 +(% style="color:blue" %)**NPN output**(%%): GND or Float. Max voltage can apply to output pin is 36v.
1527 1527  
1528 -**(% style="color:red" %)Note: DO pins go to float when device is power off.**
1713 +(% style="color:red" %)**Note: DO pins go to float when device is power off.**
1529 1529  
1530 1530  [[image:1653357531600-905.png]]
1531 1531  
... ... @@ -1547,9 +1547,9 @@
1547 1547  
1548 1548  (% style="color:blue" %)**Specifications of the wind speed sensor:**
1549 1549  
1550 -**Red:  12~~24v**
1735 +(% style="color:red" %)**Red:  12~~24v**
1551 1551  
1552 -**Yellow:  4~~20mA**
1737 +(% style="color:#ffc000" %)**Yellow:  4~~20mA**
1553 1553  
1554 1554  **Black:  GND**
1555 1555  
... ... @@ -1579,9 +1579,36 @@
1579 1579  == 3.7 LEDs Indicators ==
1580 1580  
1581 1581  
1582 -[[image:image-20220524100748-11.png]]
1767 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
1768 +|(% style="background-color:#d9e2f3; color:#0070c0" %)**LEDs**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Feature**
1769 +|**PWR**|Always on if there is power
1770 +|**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.
1771 +|**TX**|(((
1772 +Device boot: TX blinks 5 times.
1583 1583  
1774 +Successful join network: TX ON for 5 seconds.
1584 1584  
1776 +Transmit a LoRa packet: TX blinks once
1777 +)))
1778 +|**RX**|RX blinks once when receive a packet.
1779 +|**DO1**|
1780 +|**DO2**|
1781 +|**DO3**|
1782 +|**DI2**|(((
1783 +For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1784 +)))
1785 +|**DI2**|(((
1786 +For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1787 +)))
1788 +|**DI2**|(((
1789 +For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1790 +)))
1791 +|**RO1**|
1792 +|**RO2**|
1793 +
1794 +
1795 +
1796 +
1585 1585  = 4. Use AT Command =
1586 1586  
1587 1587  == 4.1 Access AT Command ==
... ... @@ -2067,14 +2067,20 @@
2067 2067  [[image:1653360498588-932.png||height="485" width="726"]]
2068 2068  
2069 2069  
2070 -== 6.4 Can I see counting event in Serial? ==
2282 +== 6.4 How to change the uplink interval？ ==
2071 2071  
2072 2072  
2285 +Please see this link: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/]]
2286 +
2287 +
2288 +== 6.5 Can I see counting event in Serial? ==
2289 +
2290 +
2073 2073  (((
2074 2074  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.
2075 2075  
2076 2076  
2077 -== 6.5 Can i use point to point communication for LT-22222-L? ==
2295 +== 6.6 Can i use point to point communication for LT-22222-L? ==
2078 2078  
2079 2079  
2080 2080  Yes, please refer [[Point to Point Communication>>doc:Main. Point to Point Communication of LT-22222-L.WebHome]]  ，this is [[firmware>>https://github.com/dragino/LT-22222-L/releases]].
... ... @@ -2083,7 +2083,7 @@
2083 2083  )))
2084 2084  
2085 2085  (((
2086 -== 6.6 Why does the relay output become the default and open relay after the lt22222 is powered off? ==
2304 +== 6.7 Why does the relay output become the default and open relay after the lt22222 is powered off? ==
2087 2087  
2088 2088  
2089 2089  If the device is not shut down, but directly powered off.
... ... @@ -2095,7 +2095,7 @@
2095 2095  After restart, the status before power failure will be read from flash.
2096 2096  
2097 2097  
2098 -== 6.7 Can i set up LT-22222-L as a NC(Normal Close) Relay? ==
2316 +== 6.8 Can i set up LT-22222-L as a NC(Normal Close) Relay? ==
2099 2099  
2100 2100  
2101 2101  LT-22222-L built-in relay is NO (Normal Open). User can use an external relay to achieve Normal Close purpose. Diagram as below:
... ... @@ -2104,7 +2104,7 @@
2104 2104  [[image:image-20221006170630-1.png||height="610" width="945"]]
2105 2105  
2106 2106  
2107 -== 6.8 Can LT22222-L save RO state? ==
2325 +== 6.9 Can LT22222-L save RO state? ==
2108 2108  
2109 2109  
2110 2110  Firmware version needs to be no less than 1.6.0.
... ... @@ -2167,8 +2167,6 @@
2167 2167  * (% style="color:red" %)**IN865**(%%):  LT with frequency bands IN865
2168 2168  * (% style="color:red" %)**CN779**(%%):  LT with frequency bands CN779
2169 2169  
2170 -
2171 -
2172 2172  = 9. Packing Info =
2173 2173  
2174 2174  
... ... @@ -2179,7 +2179,6 @@
2179 2179  * Bracket for controller x1
2180 2180  * Program cable x 1
2181 2181  
2182 -
2183 2183  **Dimension and weight**:
2184 2184  
2185 2185  * Device Size: 13.5 x 7 x 3 cm
... ... @@ -2187,8 +2187,6 @@
2187 2187  * Package Size / pcs : 14.5 x 8 x 5 cm
2188 2188  * Weight / pcs : 170g
2189 2189  
2190 -
2191 -
2192 2192  = 10. Support =
2193 2193  
2194 2194  
... ... @@ -2208,5 +2208,3 @@
2208 2208  * LT-22222-L: [[http:~~/~~/www.dragino.com/products/lora-lorawan-end-node/item/156-lt-22222-l.html>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/156-lt-22222-l.html]]
2209 2209  * [[Datasheet, Document Base>>https://www.dropbox.com/sh/gxxmgks42tqfr3a/AACEdsj_mqzeoTOXARRlwYZ2a?dl=0]]
2210 2210  * [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]]
2211 -
2212 -
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