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Last modified by Mengting Qiu on 2025/08/06 17:02
From version 171.3
edited by Xiaoling
on 2022/06/15 09:50
Change comment: There is no comment for this version
To version 174.7
edited by Xiaoling
on 2022/06/15 10:34
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -100,8 +100,6 @@
100 100  * IP66 Waterproof Enclosure
101 101  * 8500mAh Battery for long term use
102 102  
103 -
104 -
105 105  == 1.3  Suitable Container & Liquid ==
106 106  
107 107  * Solid Wall container such as: steel, iron, glass, ceramics, non-foaming plastics etc.
... ... @@ -111,8 +111,6 @@
111 111  ** Pure non metal material: <10 mm
112 112  * Pure liquid without irregular deposition.
113 113  
114 -
115 -
116 116  == 1.4  Mechanical ==
117 117  
118 118  [[image:image-20220615090910-1.png]]
... ... @@ -202,9 +202,6 @@
202 202  * Smart liquid control solution.
203 203  * Smart liquefied gas solution.
204 204  
205 -
206 -
207 -
208 208  == 1.7  Precautions ==
209 209  
210 210  * 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.
... ... @@ -211,9 +211,6 @@
211 211  * 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.
212 212  * 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.
213 213  
214 -
215 -
216 -
217 217  == 1.8  Pin mapping and power on ==
218 218  
219 219  
... ... @@ -227,7 +227,7 @@
227 227  == 2.1  How it works ==
228 228  
229 229  (((
230 -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 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.
231 231  )))
232 232  
233 233  (((
... ... @@ -300,16 +300,17 @@
300 300  
301 301  
302 302  
303 -(% style="color:blue" %)**Step 2**(%%): Power on LDDS75
293 +(% style="color:blue" %)**Step 2**(%%):  Power on LDDS20
304 304  
305 305  
306 306  Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
307 307  
308 -[[image:image-20220610161724-10.png]]
298 +[[image:image-20220615095102-14.png]]
309 309  
310 310  
301 +
311 311  (((
312 -(% 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.
313 313  )))
314 314  
315 315  [[image:1654849068701-275.png]]
... ... @@ -320,12 +320,10 @@
320 320  
321 321  (((
322 322  (((
323 -LDDS75 will uplink payload via LoRaWAN with below payload format: 
324 -)))
314 +LDDS20 will uplink payload via LoRaWAN with below payload format: 
325 325  
326 -(((
327 -Uplink payload includes in total 4 bytes.
328 -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).
329 329  )))
330 330  )))
331 331  
... ... @@ -352,7 +352,7 @@
352 352  === 2.3.1  Battery Info ===
353 353  
354 354  
355 -Check the battery voltage for LDDS75.
344 +Check the battery voltage for LDDS20.
356 356  
357 357  Ex1: 0x0B45 = 2885mV
358 358  
... ... @@ -363,20 +363,21 @@
363 363  === 2.3.2  Distance ===
364 364  
365 365  (((
366 -Get the distance. Flat object range 280mm - 7500mm.
355 +Get the distance. Flat object range 20mm - 2000mm.
367 367  )))
368 368  
369 369  (((
370 -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.**
371 371  )))
372 372  
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.
373 373  
374 -* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
375 -* 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.
376 376  
366 +
377 377  === 2.3.3  Interrupt Pin ===
378 378  
379 -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.
369 +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.
380 380  
381 381  **Example:**
382 382  
... ... @@ -422,599 +422,164 @@
422 422  The payload decoder function for TTN V3 is here:
423 423  
424 424  (((
425 -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/]]
415 +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/]]
426 426  )))
427 427  
428 428  
429 429  
430 -== 2.4  Uplink Interval ==
420 +== 2.4  Downlink Payload ==
431 431  
432 -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"]]
422 +By default, LDDS20 prints the downlink payload to console port.
433 433  
424 +[[image:image-20220615100930-15.png]]
434 434  
435 435  
436 -== 2.5  ​Show Data in DataCake IoT Server ==
427 +**Examples:**
437 437  
438 -(((
439 -[[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:
440 -)))
441 441  
442 -(((
443 -
444 -)))
430 +* (% style="color:blue" %)**Set TDC**
445 445  
446 -(((
447 -(% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
448 -)))
432 +If the payload=0100003C, it means set the END Node's TDC to 0x00003C=60(S), while type code is 01.
449 449  
450 -(((
451 -(% 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:**
452 -)))
434 +Payload:    01 00 00 1E    TDC=30S
453 453  
436 +Payload:    01 00 00 3C    TDC=60S
454 454  
455 -[[image:1654592790040-760.png]]
456 456  
439 +* (% style="color:blue" %)**Reset**
457 457  
458 -[[image:1654592800389-571.png]]
441 +If payload = 0x04FF, it will reset the LDDS20
459 459  
460 460  
461 -(% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
444 +* (% style="color:blue" %)**CFM**
462 462  
463 -(% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.**
446 +Downlink Payload: 05000001, Set AT+CFM=1 or 05000000 , set AT+CFM=0
464 464  
465 -[[image:1654851029373-510.png]]
466 466  
467 467  
468 -After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
450 +== 2.5  ​Show Data in DataCake IoT Server ==
469 469  
470 -[[image:image-20220610165129-11.png||height="595" width="1088"]]
471 -
472 -
473 -
474 -== 2.6  Frequency Plans ==
475 -
476 476  (((
477 -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.
453 +[[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:
478 478  )))
479 479  
480 -
481 -
482 -=== 2.6.1  EU863-870 (EU868) ===
483 -
484 484  (((
485 -(% style="color:blue" %)**Uplink:**
486 -)))
487 -
488 -(((
489 -868.1 - SF7BW125 to SF12BW125
490 -)))
491 -
492 -(((
493 -868.3 - SF7BW125 to SF12BW125 and SF7BW250
494 -)))
495 -
496 -(((
497 -868.5 - SF7BW125 to SF12BW125
498 -)))
499 -
500 -(((
501 -867.1 - SF7BW125 to SF12BW125
502 -)))
503 -
504 -(((
505 -867.3 - SF7BW125 to SF12BW125
506 -)))
507 -
508 -(((
509 -867.5 - SF7BW125 to SF12BW125
510 -)))
511 -
512 -(((
513 -867.7 - SF7BW125 to SF12BW125
514 -)))
515 -
516 -(((
517 -867.9 - SF7BW125 to SF12BW125
518 -)))
519 -
520 -(((
521 -868.8 - FSK
522 -)))
523 -
524 -(((
525 525  
526 526  )))
527 527  
528 528  (((
529 -(% style="color:blue" %)**Downlink:**
461 +(% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
530 530  )))
531 531  
532 532  (((
533 -Uplink channels 1-9 (RX1)
465 +(% 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:**
534 534  )))
535 535  
536 -(((
537 -869.525 - SF9BW125 (RX2 downlink only)
538 -)))
539 539  
469 +[[image:1654592790040-760.png]]
540 540  
541 541  
542 -=== 2.6.2  US902-928(US915) ===
472 +[[image:1654592800389-571.png]]
543 543  
544 -(((
545 -Used in USA, Canada and South America. Default use CHE=2
546 546  
547 -(% style="color:blue" %)**Uplink:**
475 +(% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
548 548  
549 -903.9 - SF7BW125 to SF10BW125
477 +(% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.(% style="color:red" %)(Note: LDDS20 use same payload as LDDS75)(%%)**
550 550  
551 -904.1 - SF7BW125 to SF10BW125
479 +[[image:1654851029373-510.png]]
552 552  
553 -904.3 - SF7BW125 to SF10BW125
554 554  
555 -904.5 - SF7BW125 to SF10BW125
482 +After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
556 556  
557 -904.7 - SF7BW125 to SF10BW125
484 +[[image:image-20220610165129-11.png||height="595" width="1088"]]
558 558  
559 -904.9 - SF7BW125 to SF10BW125
560 560  
561 -905.1 - SF7BW125 to SF10BW125
562 562  
563 -905.3 - SF7BW125 to SF10BW125
488 +== 2.6  LED Indicator ==
564 564  
490 +The LDDS20 has an internal LED which is to show the status of different state.
565 565  
566 -(% style="color:blue" %)**Downlink:**
567 567  
568 -923.3 - SF7BW500 to SF12BW500
493 +* Blink once when device power on.
494 +* The device detects the sensor and flashes 5 times.
495 +* Solid ON for 5 seconds once device successful Join the network.
496 +* Blink once when device transmit a packet.
569 569  
570 -923.9 - SF7BW500 to SF12BW500
571 571  
572 -924.5 - SF7BW500 to SF12BW500
573 573  
574 -925.1 - SF7BW500 to SF12BW500
500 +== 2.7  ​Firmware Change Log ==
575 575  
576 -925.7 - SF7BW500 to SF12BW500
577 577  
578 -926.3 - SF7BW500 to SF12BW500
579 -
580 -926.9 - SF7BW500 to SF12BW500
581 -
582 -927.5 - SF7BW500 to SF12BW500
583 -
584 -923.3 - SF12BW500(RX2 downlink only)
585 -
586 -
587 -
588 -)))
589 -
590 -=== 2.6.3  CN470-510 (CN470) ===
591 -
592 592  (((
593 -Used in China, Default use CHE=1
504 +**Firmware download link:  **[[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Firmware/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Firmware/]]
594 594  )))
595 595  
596 596  (((
597 -(% style="color:blue" %)**Uplink:**
598 -)))
599 -
600 -(((
601 -486.3 - SF7BW125 to SF12BW125
602 -)))
603 -
604 -(((
605 -486.5 - SF7BW125 to SF12BW125
606 -)))
607 -
608 -(((
609 -486.7 - SF7BW125 to SF12BW125
610 -)))
611 -
612 -(((
613 -486.9 - SF7BW125 to SF12BW125
614 -)))
615 -
616 -(((
617 -487.1 - SF7BW125 to SF12BW125
618 -)))
619 -
620 -(((
621 -487.3 - SF7BW125 to SF12BW125
622 -)))
623 -
624 -(((
625 -487.5 - SF7BW125 to SF12BW125
626 -)))
627 -
628 -(((
629 -487.7 - SF7BW125 to SF12BW125
630 -)))
631 -
632 -(((
633 633  
634 634  )))
635 635  
636 636  (((
637 -(% style="color:blue" %)**Downlink:**
512 +**Firmware Upgrade Method:  [[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]**
638 638  )))
639 639  
640 -(((
641 -506.7 - SF7BW125 to SF12BW125
642 -)))
643 643  
644 -(((
645 -506.9 - SF7BW125 to SF12BW125
646 -)))
647 647  
648 -(((
649 -507.1 - SF7BW125 to SF12BW125
650 -)))
517 +== 2.8  Battery Analysis ==
651 651  
652 -(((
653 -507.3 - SF7BW125 to SF12BW125
654 -)))
655 655  
656 -(((
657 -507.5 - SF7BW125 to SF12BW125
658 -)))
659 659  
660 -(((
661 -507.7 - SF7BW125 to SF12BW125
662 -)))
663 663  
664 -(((
665 -507.9 - SF7BW125 to SF12BW125
666 -)))
522 +=== 2.8.1  Battery Type ===
667 667  
668 -(((
669 -508.1 - SF7BW125 to SF12BW125
670 -)))
524 +The LDDS20 battery is a combination of a 8500mAh Li/SOCI2 Battery and a Super Capacitor. The battery is non-rechargeable battery type with a low discharge rate (<2% per year). This type of battery is commonly used in IoT devices such as water meter.
671 671  
672 -(((
673 -505.3 - SF12BW125 (RX2 downlink only)
674 -)))
675 675  
527 +The battery related documents as below:
676 676  
677 -
678 -=== 2.6.4  AU915-928(AU915) ===
679 -
680 -(((
681 -Default use CHE=2
682 -
683 -(% style="color:blue" %)**Uplink:**
684 -
685 -916.8 - SF7BW125 to SF12BW125
686 -
687 -917.0 - SF7BW125 to SF12BW125
688 -
689 -917.2 - SF7BW125 to SF12BW125
690 -
691 -917.4 - SF7BW125 to SF12BW125
692 -
693 -917.6 - SF7BW125 to SF12BW125
694 -
695 -917.8 - SF7BW125 to SF12BW125
696 -
697 -918.0 - SF7BW125 to SF12BW125
698 -
699 -918.2 - SF7BW125 to SF12BW125
700 -
701 -
702 -(% style="color:blue" %)**Downlink:**
703 -
704 -923.3 - SF7BW500 to SF12BW500
705 -
706 -923.9 - SF7BW500 to SF12BW500
707 -
708 -924.5 - SF7BW500 to SF12BW500
709 -
710 -925.1 - SF7BW500 to SF12BW500
711 -
712 -925.7 - SF7BW500 to SF12BW500
713 -
714 -926.3 - SF7BW500 to SF12BW500
715 -
716 -926.9 - SF7BW500 to SF12BW500
717 -
718 -927.5 - SF7BW500 to SF12BW500
719 -
720 -923.3 - SF12BW500(RX2 downlink only)
721 -
722 -
723 -
529 +* (((
530 +[[Battery Dimension>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]],
724 724  )))
725 -
726 -=== 2.6.5  AS920-923 & AS923-925 (AS923) ===
727 -
728 -(((
729 -(% style="color:blue" %)**Default Uplink channel:**
532 +* (((
533 +[[Lithium-Thionyl Chloride Battery  datasheet>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]],
730 730  )))
731 -
732 -(((
733 -923.2 - SF7BW125 to SF10BW125
535 +* (((
536 +[[Lithium-ion Battery-Capacitor datasheet>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]
734 734  )))
735 735  
736 -(((
737 -923.4 - SF7BW125 to SF10BW125
738 -)))
539 + [[image:image-20220615102527-16.png]]
739 739  
740 -(((
741 -
742 -)))
743 743  
744 -(((
745 -(% style="color:blue" %)**Additional Uplink Channel**:
746 -)))
747 747  
748 -(((
749 -(OTAA mode, channel added by JoinAccept message)
750 -)))
543 +== 2.8.2  Battery Note ==
751 751  
752 -(((
753 -
754 -)))
545 +The Li-SICO battery is designed for small current / long period application. It is not good to use a high current, short period transmit method. The recommended minimum period for use of this battery is 5 minutes. If you use a shorter period time to uplink data, then the battery life may be decreased.
755 755  
756 -(((
757 -(% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
758 -)))
759 759  
760 -(((
761 -922.2 - SF7BW125 to SF10BW125
762 -)))
763 763  
764 -(((
765 -922.4 - SF7BW125 to SF10BW125
766 -)))
549 +=== 2.8.3  Replace the battery ===
767 767  
768 768  (((
769 -922.6 - SF7BW125 to SF10BW125
552 +You can change the battery in the LDDS75.The type of battery is not limited as long as the output is between 3v to 3.6v. On the main board, there is a diode (D1) between the battery and the main circuit. If you need to use a battery with less than 3.3v, please remove the D1 and shortcut the two pads of it so there won't be voltage drop between battery and main board.
770 770  )))
771 771  
772 772  (((
773 -922.8 - SF7BW125 to SF10BW125
774 -)))
775 -
776 -(((
777 -923.0 - SF7BW125 to SF10BW125
778 -)))
779 -
780 -(((
781 -922.0 - SF7BW125 to SF10BW125
782 -)))
783 -
784 -(((
785 785  
786 786  )))
787 787  
788 788  (((
789 -(% style="color:blue" %)**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**:
560 +The default battery pack of LDDS75 includes a ER18505 plus super capacitor. If user can't find this pack locally, they can find ER18505 or equivalence, which will also work in most case. The SPC can enlarge the battery life for high frequency use (update period below 5 minutes)
790 790  )))
791 791  
792 -(((
793 -923.6 - SF7BW125 to SF10BW125
794 -)))
795 795  
796 -(((
797 -923.8 - SF7BW125 to SF10BW125
798 -)))
799 799  
800 -(((
801 -924.0 - SF7BW125 to SF10BW125
802 -)))
565 +== 2.8.4  Battery Life Analyze ==
803 803  
804 -(((
805 -924.2 - SF7BW125 to SF10BW125
806 -)))
567 +Dragino battery powered products are all run in Low Power mode. User can check the guideline from this link to calculate the estimate battery life:
807 807  
808 -(((
809 -924.4 - SF7BW125 to SF10BW125
810 -)))
569 +[[https:~~/~~/www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf>>url:https://www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf]]
811 811  
812 -(((
813 -924.6 - SF7BW125 to SF10BW125
814 -)))
815 815  
816 -(((
817 -
818 -)))
819 819  
820 -(((
821 -(% style="color:blue" %)**Downlink:**
822 -)))
823 -
824 -(((
825 -Uplink channels 1-8 (RX1)
826 -)))
827 -
828 -(((
829 -923.2 - SF10BW125 (RX2)
830 -)))
831 -
832 -
833 -
834 -=== 2.6.6  KR920-923 (KR920) ===
835 -
836 -(((
837 -(% style="color:blue" %)**Default channel:**
838 -)))
839 -
840 -(((
841 -922.1 - SF7BW125 to SF12BW125
842 -)))
843 -
844 -(((
845 -922.3 - SF7BW125 to SF12BW125
846 -)))
847 -
848 -(((
849 -922.5 - SF7BW125 to SF12BW125
850 -)))
851 -
852 -(((
853 -
854 -)))
855 -
856 -(((
857 -(% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
858 -)))
859 -
860 -(((
861 -922.1 - SF7BW125 to SF12BW125
862 -)))
863 -
864 -(((
865 -922.3 - SF7BW125 to SF12BW125
866 -)))
867 -
868 -(((
869 -922.5 - SF7BW125 to SF12BW125
870 -)))
871 -
872 -(((
873 -922.7 - SF7BW125 to SF12BW125
874 -)))
875 -
876 -(((
877 -922.9 - SF7BW125 to SF12BW125
878 -)))
879 -
880 -(((
881 -923.1 - SF7BW125 to SF12BW125
882 -)))
883 -
884 -(((
885 -923.3 - SF7BW125 to SF12BW125
886 -)))
887 -
888 -(((
889 -
890 -)))
891 -
892 -(((
893 -(% style="color:blue" %)**Downlink:**
894 -)))
895 -
896 -(((
897 -Uplink channels 1-7(RX1)
898 -)))
899 -
900 -(((
901 -921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
902 -)))
903 -
904 -
905 -
906 -=== 2.6.7  IN865-867 (IN865) ===
907 -
908 -(((
909 -(% style="color:blue" %)**Uplink:**
910 -)))
911 -
912 -(((
913 -865.0625 - SF7BW125 to SF12BW125
914 -)))
915 -
916 -(((
917 -865.4025 - SF7BW125 to SF12BW125
918 -)))
919 -
920 -(((
921 -865.9850 - SF7BW125 to SF12BW125
922 -)))
923 -
924 -(((
925 -
926 -)))
927 -
928 -(((
929 -(% style="color:blue" %)**Downlink:**
930 -)))
931 -
932 -(((
933 -Uplink channels 1-3 (RX1)
934 -)))
935 -
936 -(((
937 -866.550 - SF10BW125 (RX2)
938 -)))
939 -
940 -
941 -
942 -== 2.7  LED Indicator ==
943 -
944 -The LDDS75 has an internal LED which is to show the status of different state.
945 -
946 -
947 -* Blink once when device power on.
948 -* The device detects the sensor and flashes 5 times.
949 -* Solid ON for 5 seconds once device successful Join the network.
950 -* Blink once when device transmit a packet.
951 -
952 -== 2.8  ​Firmware Change Log ==
953 -
954 -
955 -(((
956 -**Firmware download link: **[[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Firmware/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Firmware/]]
957 -)))
958 -
959 -(((
960 -
961 -)))
962 -
963 -(((
964 -**Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
965 -)))
966 -
967 -
968 -
969 -== 2.9  Mechanical ==
970 -
971 -
972 -[[image:image-20220610172003-1.png]]
973 -
974 -
975 -[[image:image-20220610172003-2.png]]
976 -
977 -
978 -
979 -== 2.10  Battery Analysis ==
980 -
981 -=== 2.10.1  Battery Type ===
982 -
983 -The LDDS75 battery is a combination of a 4000mAh or 8500mAh Li/SOCI2 Battery and a Super Capacitor. The battery is non-rechargeable battery type with a low discharge rate (<2% per year). This type of battery is commonly used in IoT devices such as water meter.
984 -
985 -
986 -The battery related documents as below:
987 -
988 -* (((
989 -[[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
990 -)))
991 -* (((
992 -[[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
993 -)))
994 -* (((
995 -[[Lithium-ion Battery-Capacitor datasheet>>url:http://www.dragino.com/downloads/downloads/datasheet/Battery/SPC_1520_datasheet.jpg]], [[Tech Spec>>url:http://www.dragino.com/downloads/downloads/datasheet/Battery/SPC1520%20Technical%20Specification20171123.pdf]]
996 -)))
997 -
998 - [[image:image-20220610172400-3.png]]
999 -
1000 -
1001 -
1002 -=== 2.10.2  Replace the battery ===
1003 -
1004 -(((
1005 -You can change the battery in the LDDS75.The type of battery is not limited as long as the output is between 3v to 3.6v. On the main board, there is a diode (D1) between the battery and the main circuit. If you need to use a battery with less than 3.3v, please remove the D1 and shortcut the two pads of it so there won't be voltage drop between battery and main board.
1006 -)))
1007 -
1008 -(((
1009 -
1010 -)))
1011 -
1012 -(((
1013 -The default battery pack of LDDS75 includes a ER18505 plus super capacitor. If user can't find this pack locally, they can find ER18505 or equivalence, which will also work in most case. The SPC can enlarge the battery life for high frequency use (update period below 5 minutes)
1014 -)))
1015 -
1016 -
1017 -
1018 1018  = 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
1019 1019  
1020 1020  (((
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