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Last modified by Mengting Qiu on 2025/08/06 17:02
From version 169.8
edited by Xiaoling
on 2022/06/15 09:35
Change comment: There is no comment for this version
To version 173.6
edited by Xiaoling
on 2022/06/15 10:15
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -100,7 +100,6 @@
100 100  * IP66 Waterproof Enclosure
101 101  * 8500mAh Battery for long term use
102 102  
103 -
104 104  == 1.3  Suitable Container & Liquid ==
105 105  
106 106  * Solid Wall container such as: steel, iron, glass, ceramics, non-foaming plastics etc.
... ... @@ -110,7 +110,6 @@
110 110  ** Pure non metal material: <10 mm
111 111  * Pure liquid without irregular deposition.
112 112  
113 -
114 114  == 1.4  Mechanical ==
115 115  
116 116  [[image:image-20220615090910-1.png]]
... ... @@ -143,6 +143,7 @@
143 143  [[image:image-20220615092044-12.png]]
144 144  
145 145  
144 +
146 146  (% style="color:blue" %)**Step3:   **(%%)Test the installation point.
147 147  
148 148  Power on LDDS75, check if the blue LED is on, If the blue LED is on, means the sensor works. Then put ultrasonic coupling paste on the sensor and put it tightly on the installation point.
... ... @@ -171,9 +171,9 @@
171 171  (% style="color:red" %)Ultrasonic coupling paste (%%) is subjected in most shipping way. So the default package doesn’t include it and user needs to purchase locally.
172 172  
173 173  
173 +
174 174  (% style="color:blue" %)**Step4:   **(%%)Install use Epoxy ab glue.
175 175  
176 -
177 177  Prepare Eproxy AB glue.
178 178  
179 179  Put Eproxy AB glue in the sensor and press it hard on the container installation point.
... ... @@ -196,30 +196,33 @@
196 196  
197 197  == 1.6 ​ Applications ==
198 198  
199 -
200 -
201 201  * Smart liquid control solution.
202 202  * Smart liquefied gas solution.
203 203  
201 +== 1.7  Precautions ==
204 204  
203 +* At room temperature, containers of different materials, such as steel, glass, iron, ceramics, non-foamed plastics and other dense materials, have different detection blind areas and detection limit heights.
204 +* For containers of the same material at room temperature, the detection blind zone and detection limit height are also different for the thickness of the container.
205 +* When the detected liquid level exceeds the effective detection value of the sensor, and the liquid level of the liquid to be measured shakes or tilts, the detected liquid height is unstable.
205 205  
206 -== 1.6  Pin mapping and power on ==
207 +== 1.8  Pin mapping and power on ==
207 207  
208 208  
209 -[[image:1654847583902-256.png]]
210 +[[image:1655257026882-201.png]]
210 210  
211 211  
212 212  
213 -= 2.  Configure LDDS75 to connect to LoRaWAN network =
214 += 2.  Configure LDDS20 to connect to LoRaWAN network =
214 214  
216 +
215 215  == 2.1  How it works ==
216 216  
217 217  (((
218 -The LDDS75 is configured as LoRaWAN OTAA Class A mode by default. It has OTAA keys to join LoRaWAN network. To connect a LoRaWAN network, you need to input the OTAA keys in the LoRaWAN IoT server and power on the LDDS75. If there is coverage of the LoRaWAN network, it will automatically join the network via OTAA and start to send the sensor value
220 +The LDDS20 is configured as LoRaWAN OTAA Class A mode by default. It has OTAA keys to join LoRaWAN network. To connect a LoRaWAN network, you need to input the OTAA keys in the LoRaWAN IoT server and power on the LDDS20. If there is coverage of the LoRaWAN network, it will automatically join the network via OTAA and start to send the sensor value.
219 219  )))
220 220  
221 221  (((
222 -In case you can't set the OTAA keys in the LoRaWAN OTAA server, and you have to use the keys from the server, you can [[use AT Commands >>||anchor="H3.A0ConfigureLDDS75viaATCommandorLoRaWANDownlink"]]to set the keys in the LDDS75.
224 +In case you can't set the OTAA keys in the LoRaWAN OTAA server, and you have to use the keys from the server, you can [[use AT Commands >>||anchor="H3.A0UsingtheATCommands"]]to set the keys in the LDDS20.
223 223  )))
224 224  
225 225  
... ... @@ -231,7 +231,7 @@
231 231  )))
232 232  
233 233  (((
234 -[[image:1654848616367-242.png]]
236 +[[image:1655257698953-697.png]]
235 235  )))
236 236  
237 237  (((
... ... @@ -241,11 +241,11 @@
241 241  (((
242 242  
243 243  
244 -(% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
246 +(% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS20.
245 245  )))
246 246  
247 247  (((
248 -Each LDDS75 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
250 +Each LDDS20 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
249 249  )))
250 250  
251 251  [[image:image-20220607170145-1.jpeg]]
... ... @@ -275,6 +275,7 @@
275 275  [[image:image-20220610161353-7.png]]
276 276  
277 277  
280 +
278 278  You can also choose to create the device manually.
279 279  
280 280   [[image:image-20220610161538-8.png]]
... ... @@ -287,16 +287,17 @@
287 287  
288 288  
289 289  
290 -(% style="color:blue" %)**Step 2**(%%): Power on LDDS75
293 +(% style="color:blue" %)**Step 2**(%%):  Power on LDDS20
291 291  
292 292  
293 293  Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
294 294  
295 -[[image:image-20220610161724-10.png]]
298 +[[image:image-20220615095102-14.png]]
296 296  
297 297  
301 +
298 298  (((
299 -(% style="color:blue" %)**Step 3**(%%)**:** The LDDS75 will auto join to the TTN network. After join success, it will start to upload messages to TTN and you can see the messages in the panel.
303 +(% style="color:blue" %)**Step 3**(%%)**:**  The LDDS20 will auto join to the TTN network. After join success, it will start to upload messages to TTN and you can see the messages in the panel.
300 300  )))
301 301  
302 302  [[image:1654849068701-275.png]]
... ... @@ -307,12 +307,10 @@
307 307  
308 308  (((
309 309  (((
310 -LDDS75 will uplink payload via LoRaWAN with below payload format: 
311 -)))
314 +LDDS20 will uplink payload via LoRaWAN with below payload format: 
312 312  
313 -(((
314 -Uplink payload includes in total 4 bytes.
315 -Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
316 +Uplink payload includes in total 8 bytes.
317 +Payload for firmware version v1.1.4. . Before v1.1.3, there is only 5 bytes: BAT and Distance(Please check manual v1.2.0 if you have 5 bytes payload).
316 316  )))
317 317  )))
318 318  
... ... @@ -339,7 +339,7 @@
339 339  === 2.3.1  Battery Info ===
340 340  
341 341  
342 -Check the battery voltage for LDDS75.
344 +Check the battery voltage for LDDS20.
343 343  
344 344  Ex1: 0x0B45 = 2885mV
345 345  
... ... @@ -350,20 +350,19 @@
350 350  === 2.3.2  Distance ===
351 351  
352 352  (((
353 -Get the distance. Flat object range 280mm - 7500mm.
355 +Get the distance. Flat object range 20mm - 2000mm.
354 354  )))
355 355  
356 356  (((
357 -For example, if the data you get from the register is 0x0B 0x05, the distance between the sensor and the measured object is(% style="color:#4472c4" %)** 0B05(H) = 2821 (D) = 2821 mm.**
359 +For example, if the data you get from the register is __0x06 0x05__, the distance between the sensor and the measured object is(% style="color:#4472c4" %)** 0605(H) = 1541 (D) = 1541 mm.**
358 358  )))
359 359  
362 +* If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor.
363 +* If the sensor value lower than 0x0014 (20mm), the sensor value will be invalid.
360 360  
361 -* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
362 -* If the sensor value lower than 0x0118 (280mm), the sensor value will be invalid. Since v1.1.4, all value lower than 280mm will be set to 0x0014(20mm) which means the value is invalid.
363 -
364 364  === 2.3.3  Interrupt Pin ===
365 365  
366 -This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H3.3A0SetInterruptMode"]] for the hardware and software set up.
367 +This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H3.2A0SetInterruptMode"]] for the hardware and software set up.
367 367  
368 368  **Example:**
369 369  
... ... @@ -409,533 +409,91 @@
409 409  The payload decoder function for TTN V3 is here:
410 410  
411 411  (((
412 -LDDS75 TTN V3 Payload Decoder: [[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDDS75/Payload_Decoder/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Payload_Decoder/]]
413 +LDDS20 TTN V3 Payload Decoder: [[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDDS20/Payload_Decoder/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Payload_Decoder/]]
413 413  )))
414 414  
415 415  
416 416  
417 -== 2.4  Uplink Interval ==
418 +== 2.4  Downlink Payload ==
418 418  
419 -The LDDS75 by default uplink the sensor data every 20 minutes. User can change this interval by AT Command or LoRaWAN Downlink Command. See this link: [[Change Uplink Interval>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H4.1ChangeUplinkInterval"]]
420 +By default, LDDS20 prints the downlink payload to console port.
420 420  
422 +[[image:image-20220615100930-15.png]]
421 421  
422 422  
423 -== 2.5  ​Show Data in DataCake IoT Server ==
425 +**Examples:**
424 424  
425 -(((
426 -[[DATACAKE>>url:https://datacake.co/]] provides a human friendly interface to show the sensor data, once we have data in TTN, we can use [[DATACAKE>>url:https://datacake.co/]] to connect to TTN and see the data in DATACAKE. Below are the steps:
427 -)))
428 428  
429 -(((
430 -
431 -)))
428 +* (% style="color:blue" %)**Set TDC**
432 432  
433 -(((
434 -(% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
435 -)))
430 +If the payload=0100003C, it means set the END Node's TDC to 0x00003C=60(S), while type code is 01.
436 436  
437 -(((
438 -(% style="color:blue" %)**Step 2**(%%)**: To configure the Application to forward data to DATACAKE you will need to add integration. To add the DATACAKE integration, perform the following steps:**
439 -)))
432 +Payload:    01 00 00 1E    TDC=30S
440 440  
434 +Payload:    01 00 00 3C    TDC=60S
441 441  
442 -[[image:1654592790040-760.png]]
443 443  
437 +* (% style="color:blue" %)**Reset**
444 444  
445 -[[image:1654592800389-571.png]]
439 +If payload = 0x04FF, it will reset the LDDS20
446 446  
447 447  
448 -(% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
442 +* (% style="color:blue" %)**CFM**
449 449  
450 -(% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.**
444 +Downlink Payload: 05000001, Set AT+CFM=1 or 05000000 , set AT+CFM=0
451 451  
452 -[[image:1654851029373-510.png]]
453 453  
454 454  
455 -After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
448 +== 2.5  ​Show Data in DataCake IoT Server ==
456 456  
457 -[[image:image-20220610165129-11.png||height="595" width="1088"]]
458 -
459 -
460 -
461 -== 2.6  Frequency Plans ==
462 -
463 463  (((
464 -The LDDS75 uses OTAA mode and below frequency plans by default. If user want to use it with different frequency plan, please refer the AT command sets.
451 +[[DATACAKE>>url:https://datacake.co/]] provides a human friendly interface to show the sensor data, once we have data in TTN, we can use [[DATACAKE>>url:https://datacake.co/]] to connect to TTN and see the data in DATACAKE. Below are the steps:
465 465  )))
466 466  
467 -
468 -
469 -=== 2.6.1  EU863-870 (EU868) ===
470 -
471 471  (((
472 -(% style="color:blue" %)**Uplink:**
473 -)))
474 -
475 -(((
476 -868.1 - SF7BW125 to SF12BW125
477 -)))
478 -
479 -(((
480 -868.3 - SF7BW125 to SF12BW125 and SF7BW250
481 -)))
482 -
483 -(((
484 -868.5 - SF7BW125 to SF12BW125
485 -)))
486 -
487 -(((
488 -867.1 - SF7BW125 to SF12BW125
489 -)))
490 -
491 -(((
492 -867.3 - SF7BW125 to SF12BW125
493 -)))
494 -
495 -(((
496 -867.5 - SF7BW125 to SF12BW125
497 -)))
498 -
499 -(((
500 -867.7 - SF7BW125 to SF12BW125
501 -)))
502 -
503 -(((
504 -867.9 - SF7BW125 to SF12BW125
505 -)))
506 -
507 -(((
508 -868.8 - FSK
509 -)))
510 -
511 -(((
512 512  
513 513  )))
514 514  
515 515  (((
516 -(% style="color:blue" %)**Downlink:**
459 +(% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
517 517  )))
518 518  
519 519  (((
520 -Uplink channels 1-9 (RX1)
463 +(% style="color:blue" %)**Step 2**(%%)**: To configure the Application to forward data to DATACAKE you will need to add integration. To add the DATACAKE integration, perform the following steps:**
521 521  )))
522 522  
523 -(((
524 -869.525 - SF9BW125 (RX2 downlink only)
525 -)))
526 526  
467 +[[image:1654592790040-760.png]]
527 527  
528 528  
529 -=== 2.6.2  US902-928(US915) ===
470 +[[image:1654592800389-571.png]]
530 530  
531 -(((
532 -Used in USA, Canada and South America. Default use CHE=2
533 533  
534 -(% style="color:blue" %)**Uplink:**
473 +(% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
535 535  
536 -903.9 - SF7BW125 to SF10BW125
475 +(% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.(% style="color:red" %)(Note: LDDS20 use same payload as LDDS75)(%%)**
537 537  
538 -904.1 - SF7BW125 to SF10BW125
477 +[[image:1654851029373-510.png]]
539 539  
540 -904.3 - SF7BW125 to SF10BW125
541 541  
542 -904.5 - SF7BW125 to SF10BW125
480 +After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
543 543  
544 -904.7 - SF7BW125 to SF10BW125
482 +[[image:image-20220610165129-11.png||height="595" width="1088"]]
545 545  
546 -904.9 - SF7BW125 to SF10BW125
547 547  
548 -905.1 - SF7BW125 to SF10BW125
549 549  
550 -905.3 - SF7BW125 to SF10BW125
486 +== 2.6  LED Indicator ==
551 551  
488 +The LDDS20 has an internal LED which is to show the status of different state.
552 552  
553 -(% style="color:blue" %)**Downlink:**
554 554  
555 -923.3 - SF7BW500 to SF12BW500
556 -
557 -923.9 - SF7BW500 to SF12BW500
558 -
559 -924.5 - SF7BW500 to SF12BW500
560 -
561 -925.1 - SF7BW500 to SF12BW500
562 -
563 -925.7 - SF7BW500 to SF12BW500
564 -
565 -926.3 - SF7BW500 to SF12BW500
566 -
567 -926.9 - SF7BW500 to SF12BW500
568 -
569 -927.5 - SF7BW500 to SF12BW500
570 -
571 -923.3 - SF12BW500(RX2 downlink only)
572 -
573 -
574 -
575 -)))
576 -
577 -=== 2.6.3  CN470-510 (CN470) ===
578 -
579 -(((
580 -Used in China, Default use CHE=1
581 -)))
582 -
583 -(((
584 -(% style="color:blue" %)**Uplink:**
585 -)))
586 -
587 -(((
588 -486.3 - SF7BW125 to SF12BW125
589 -)))
590 -
591 -(((
592 -486.5 - SF7BW125 to SF12BW125
593 -)))
594 -
595 -(((
596 -486.7 - SF7BW125 to SF12BW125
597 -)))
598 -
599 -(((
600 -486.9 - SF7BW125 to SF12BW125
601 -)))
602 -
603 -(((
604 -487.1 - SF7BW125 to SF12BW125
605 -)))
606 -
607 -(((
608 -487.3 - SF7BW125 to SF12BW125
609 -)))
610 -
611 -(((
612 -487.5 - SF7BW125 to SF12BW125
613 -)))
614 -
615 -(((
616 -487.7 - SF7BW125 to SF12BW125
617 -)))
618 -
619 -(((
620 -
621 -)))
622 -
623 -(((
624 -(% style="color:blue" %)**Downlink:**
625 -)))
626 -
627 -(((
628 -506.7 - SF7BW125 to SF12BW125
629 -)))
630 -
631 -(((
632 -506.9 - SF7BW125 to SF12BW125
633 -)))
634 -
635 -(((
636 -507.1 - SF7BW125 to SF12BW125
637 -)))
638 -
639 -(((
640 -507.3 - SF7BW125 to SF12BW125
641 -)))
642 -
643 -(((
644 -507.5 - SF7BW125 to SF12BW125
645 -)))
646 -
647 -(((
648 -507.7 - SF7BW125 to SF12BW125
649 -)))
650 -
651 -(((
652 -507.9 - SF7BW125 to SF12BW125
653 -)))
654 -
655 -(((
656 -508.1 - SF7BW125 to SF12BW125
657 -)))
658 -
659 -(((
660 -505.3 - SF12BW125 (RX2 downlink only)
661 -)))
662 -
663 -
664 -
665 -=== 2.6.4  AU915-928(AU915) ===
666 -
667 -(((
668 -Default use CHE=2
669 -
670 -(% style="color:blue" %)**Uplink:**
671 -
672 -916.8 - SF7BW125 to SF12BW125
673 -
674 -917.0 - SF7BW125 to SF12BW125
675 -
676 -917.2 - SF7BW125 to SF12BW125
677 -
678 -917.4 - SF7BW125 to SF12BW125
679 -
680 -917.6 - SF7BW125 to SF12BW125
681 -
682 -917.8 - SF7BW125 to SF12BW125
683 -
684 -918.0 - SF7BW125 to SF12BW125
685 -
686 -918.2 - SF7BW125 to SF12BW125
687 -
688 -
689 -(% style="color:blue" %)**Downlink:**
690 -
691 -923.3 - SF7BW500 to SF12BW500
692 -
693 -923.9 - SF7BW500 to SF12BW500
694 -
695 -924.5 - SF7BW500 to SF12BW500
696 -
697 -925.1 - SF7BW500 to SF12BW500
698 -
699 -925.7 - SF7BW500 to SF12BW500
700 -
701 -926.3 - SF7BW500 to SF12BW500
702 -
703 -926.9 - SF7BW500 to SF12BW500
704 -
705 -927.5 - SF7BW500 to SF12BW500
706 -
707 -923.3 - SF12BW500(RX2 downlink only)
708 -
709 -
710 -
711 -)))
712 -
713 -=== 2.6.5  AS920-923 & AS923-925 (AS923) ===
714 -
715 -(((
716 -(% style="color:blue" %)**Default Uplink channel:**
717 -)))
718 -
719 -(((
720 -923.2 - SF7BW125 to SF10BW125
721 -)))
722 -
723 -(((
724 -923.4 - SF7BW125 to SF10BW125
725 -)))
726 -
727 -(((
728 -
729 -)))
730 -
731 -(((
732 -(% style="color:blue" %)**Additional Uplink Channel**:
733 -)))
734 -
735 -(((
736 -(OTAA mode, channel added by JoinAccept message)
737 -)))
738 -
739 -(((
740 -
741 -)))
742 -
743 -(((
744 -(% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
745 -)))
746 -
747 -(((
748 -922.2 - SF7BW125 to SF10BW125
749 -)))
750 -
751 -(((
752 -922.4 - SF7BW125 to SF10BW125
753 -)))
754 -
755 -(((
756 -922.6 - SF7BW125 to SF10BW125
757 -)))
758 -
759 -(((
760 -922.8 - SF7BW125 to SF10BW125
761 -)))
762 -
763 -(((
764 -923.0 - SF7BW125 to SF10BW125
765 -)))
766 -
767 -(((
768 -922.0 - SF7BW125 to SF10BW125
769 -)))
770 -
771 -(((
772 -
773 -)))
774 -
775 -(((
776 -(% style="color:blue" %)**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**:
777 -)))
778 -
779 -(((
780 -923.6 - SF7BW125 to SF10BW125
781 -)))
782 -
783 -(((
784 -923.8 - SF7BW125 to SF10BW125
785 -)))
786 -
787 -(((
788 -924.0 - SF7BW125 to SF10BW125
789 -)))
790 -
791 -(((
792 -924.2 - SF7BW125 to SF10BW125
793 -)))
794 -
795 -(((
796 -924.4 - SF7BW125 to SF10BW125
797 -)))
798 -
799 -(((
800 -924.6 - SF7BW125 to SF10BW125
801 -)))
802 -
803 -(((
804 -
805 -)))
806 -
807 -(((
808 -(% style="color:blue" %)**Downlink:**
809 -)))
810 -
811 -(((
812 -Uplink channels 1-8 (RX1)
813 -)))
814 -
815 -(((
816 -923.2 - SF10BW125 (RX2)
817 -)))
818 -
819 -
820 -
821 -=== 2.6.6  KR920-923 (KR920) ===
822 -
823 -(((
824 -(% style="color:blue" %)**Default channel:**
825 -)))
826 -
827 -(((
828 -922.1 - SF7BW125 to SF12BW125
829 -)))
830 -
831 -(((
832 -922.3 - SF7BW125 to SF12BW125
833 -)))
834 -
835 -(((
836 -922.5 - SF7BW125 to SF12BW125
837 -)))
838 -
839 -(((
840 -
841 -)))
842 -
843 -(((
844 -(% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
845 -)))
846 -
847 -(((
848 -922.1 - SF7BW125 to SF12BW125
849 -)))
850 -
851 -(((
852 -922.3 - SF7BW125 to SF12BW125
853 -)))
854 -
855 -(((
856 -922.5 - SF7BW125 to SF12BW125
857 -)))
858 -
859 -(((
860 -922.7 - SF7BW125 to SF12BW125
861 -)))
862 -
863 -(((
864 -922.9 - SF7BW125 to SF12BW125
865 -)))
866 -
867 -(((
868 -923.1 - SF7BW125 to SF12BW125
869 -)))
870 -
871 -(((
872 -923.3 - SF7BW125 to SF12BW125
873 -)))
874 -
875 -(((
876 -
877 -)))
878 -
879 -(((
880 -(% style="color:blue" %)**Downlink:**
881 -)))
882 -
883 -(((
884 -Uplink channels 1-7(RX1)
885 -)))
886 -
887 -(((
888 -921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
889 -)))
890 -
891 -
892 -
893 -=== 2.6.7  IN865-867 (IN865) ===
894 -
895 -(((
896 -(% style="color:blue" %)**Uplink:**
897 -)))
898 -
899 -(((
900 -865.0625 - SF7BW125 to SF12BW125
901 -)))
902 -
903 -(((
904 -865.4025 - SF7BW125 to SF12BW125
905 -)))
906 -
907 -(((
908 -865.9850 - SF7BW125 to SF12BW125
909 -)))
910 -
911 -(((
912 -
913 -)))
914 -
915 -(((
916 -(% style="color:blue" %)**Downlink:**
917 -)))
918 -
919 -(((
920 -Uplink channels 1-3 (RX1)
921 -)))
922 -
923 -(((
924 -866.550 - SF10BW125 (RX2)
925 -)))
926 -
927 -
928 -
929 -== 2.7  LED Indicator ==
930 -
931 -The LDDS75 has an internal LED which is to show the status of different state.
932 -
933 -
934 934  * Blink once when device power on.
935 935  * The device detects the sensor and flashes 5 times.
936 936  * Solid ON for 5 seconds once device successful Join the network.
937 937  * Blink once when device transmit a packet.
938 938  
496 +
497 +
939 939  == 2.8  ​Firmware Change Log ==
940 940  
941 941  
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