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Last modified by Mengting Qiu on 2025/08/06 17:02
From version 170.5
edited by Xiaoling
on 2022/06/15 09:46
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
... ... @@ -100,9 +100,6 @@
100 100  * IP66 Waterproof Enclosure
101 101  * 8500mAh Battery for long term use
102 102  
103 -
104 -
105 -
106 106  == 1.3  Suitable Container & Liquid ==
107 107  
108 108  * Solid Wall container such as: steel, iron, glass, ceramics, non-foaming plastics etc.
... ... @@ -112,8 +112,6 @@
112 112  ** Pure non metal material: <10 mm
113 113  * Pure liquid without irregular deposition.
114 114  
115 -
116 -
117 117  == 1.4  Mechanical ==
118 118  
119 119  [[image:image-20220615090910-1.png]]
... ... @@ -146,6 +146,7 @@
146 146  [[image:image-20220615092044-12.png]]
147 147  
148 148  
144 +
149 149  (% style="color:blue" %)**Step3:   **(%%)Test the installation point.
150 150  
151 151  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.
... ... @@ -174,9 +174,9 @@
174 174  (% 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.
175 175  
176 176  
173 +
177 177  (% style="color:blue" %)**Step4:   **(%%)Install use Epoxy ab glue.
178 178  
179 -
180 180  Prepare Eproxy AB glue.
181 181  
182 182  Put Eproxy AB glue in the sensor and press it hard on the container installation point.
... ... @@ -202,7 +202,6 @@
202 202  * Smart liquid control solution.
203 203  * Smart liquefied gas solution.
204 204  
205 -
206 206  == 1.7  Precautions ==
207 207  
208 208  * 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.
... ... @@ -209,7 +209,6 @@
209 209  * 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.
210 210  * 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.
211 211  
212 -
213 213  == 1.8  Pin mapping and power on ==
214 214  
215 215  
... ... @@ -223,7 +223,7 @@
223 223  == 2.1  How it works ==
224 224  
225 225  (((
226 -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.
227 227  )))
228 228  
229 229  (((
... ... @@ -239,7 +239,7 @@
239 239  )))
240 240  
241 241  (((
242 -[[image:1654848616367-242.png]]
236 +[[image:1655257698953-697.png]]
243 243  )))
244 244  
245 245  (((
... ... @@ -249,11 +249,11 @@
249 249  (((
250 250  
251 251  
252 -(% 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.
253 253  )))
254 254  
255 255  (((
256 -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.
257 257  )))
258 258  
259 259  [[image:image-20220607170145-1.jpeg]]
... ... @@ -283,6 +283,7 @@
283 283  [[image:image-20220610161353-7.png]]
284 284  
285 285  
280 +
286 286  You can also choose to create the device manually.
287 287  
288 288   [[image:image-20220610161538-8.png]]
... ... @@ -295,16 +295,17 @@
295 295  
296 296  
297 297  
298 -(% style="color:blue" %)**Step 2**(%%): Power on LDDS75
293 +(% style="color:blue" %)**Step 2**(%%):  Power on LDDS20
299 299  
300 300  
301 301  Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
302 302  
303 -[[image:image-20220610161724-10.png]]
298 +[[image:image-20220615095102-14.png]]
304 304  
305 305  
301 +
306 306  (((
307 -(% 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.
308 308  )))
309 309  
310 310  [[image:1654849068701-275.png]]
... ... @@ -315,12 +315,10 @@
315 315  
316 316  (((
317 317  (((
318 -LDDS75 will uplink payload via LoRaWAN with below payload format: 
319 -)))
314 +LDDS20 will uplink payload via LoRaWAN with below payload format: 
320 320  
321 -(((
322 -Uplink payload includes in total 4 bytes.
323 -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).
324 324  )))
325 325  )))
326 326  
... ... @@ -347,7 +347,7 @@
347 347  === 2.3.1  Battery Info ===
348 348  
349 349  
350 -Check the battery voltage for LDDS75.
344 +Check the battery voltage for LDDS20.
351 351  
352 352  Ex1: 0x0B45 = 2885mV
353 353  
... ... @@ -358,20 +358,21 @@
358 358  === 2.3.2  Distance ===
359 359  
360 360  (((
361 -Get the distance. Flat object range 280mm - 7500mm.
355 +Get the distance. Flat object range 20mm - 2000mm.
362 362  )))
363 363  
364 364  (((
365 -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.**
366 366  )))
367 367  
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.
368 368  
369 -* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
370 -* 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.
371 371  
366 +
372 372  === 2.3.3  Interrupt Pin ===
373 373  
374 -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.
375 375  
376 376  **Example:**
377 377  
... ... @@ -417,599 +417,164 @@
417 417  The payload decoder function for TTN V3 is here:
418 418  
419 419  (((
420 -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/]]
421 421  )))
422 422  
423 423  
424 424  
425 -== 2.4  Uplink Interval ==
420 +== 2.4  Downlink Payload ==
426 426  
427 -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.
428 428  
424 +[[image:image-20220615100930-15.png]]
429 429  
430 430  
431 -== 2.5  ​Show Data in DataCake IoT Server ==
427 +**Examples:**
432 432  
433 -(((
434 -[[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:
435 -)))
436 436  
437 -(((
438 -
439 -)))
430 +* (% style="color:blue" %)**Set TDC**
440 440  
441 -(((
442 -(% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
443 -)))
432 +If the payload=0100003C, it means set the END Node's TDC to 0x00003C=60(S), while type code is 01.
444 444  
445 -(((
446 -(% 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:**
447 -)))
434 +Payload:    01 00 00 1E    TDC=30S
448 448  
436 +Payload:    01 00 00 3C    TDC=60S
449 449  
450 -[[image:1654592790040-760.png]]
451 451  
439 +* (% style="color:blue" %)**Reset**
452 452  
453 -[[image:1654592800389-571.png]]
441 +If payload = 0x04FF, it will reset the LDDS20
454 454  
455 455  
456 -(% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
444 +* (% style="color:blue" %)**CFM**
457 457  
458 -(% 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
459 459  
460 -[[image:1654851029373-510.png]]
461 461  
462 462  
463 -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 ==
464 464  
465 -[[image:image-20220610165129-11.png||height="595" width="1088"]]
466 -
467 -
468 -
469 -== 2.6  Frequency Plans ==
470 -
471 471  (((
472 -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:
473 473  )))
474 474  
475 -
476 -
477 -=== 2.6.1  EU863-870 (EU868) ===
478 -
479 479  (((
480 -(% style="color:blue" %)**Uplink:**
481 -)))
482 -
483 -(((
484 -868.1 - SF7BW125 to SF12BW125
485 -)))
486 -
487 -(((
488 -868.3 - SF7BW125 to SF12BW125 and SF7BW250
489 -)))
490 -
491 -(((
492 -868.5 - SF7BW125 to SF12BW125
493 -)))
494 -
495 -(((
496 -867.1 - SF7BW125 to SF12BW125
497 -)))
498 -
499 -(((
500 -867.3 - SF7BW125 to SF12BW125
501 -)))
502 -
503 -(((
504 -867.5 - SF7BW125 to SF12BW125
505 -)))
506 -
507 -(((
508 -867.7 - SF7BW125 to SF12BW125
509 -)))
510 -
511 -(((
512 -867.9 - SF7BW125 to SF12BW125
513 -)))
514 -
515 -(((
516 -868.8 - FSK
517 -)))
518 -
519 -(((
520 520  
521 521  )))
522 522  
523 523  (((
524 -(% 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.**
525 525  )))
526 526  
527 527  (((
528 -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:**
529 529  )))
530 530  
531 -(((
532 -869.525 - SF9BW125 (RX2 downlink only)
533 -)))
534 534  
469 +[[image:1654592790040-760.png]]
535 535  
536 536  
537 -=== 2.6.2  US902-928(US915) ===
472 +[[image:1654592800389-571.png]]
538 538  
539 -(((
540 -Used in USA, Canada and South America. Default use CHE=2
541 541  
542 -(% style="color:blue" %)**Uplink:**
475 +(% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
543 543  
544 -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)(%%)**
545 545  
546 -904.1 - SF7BW125 to SF10BW125
479 +[[image:1654851029373-510.png]]
547 547  
548 -904.3 - SF7BW125 to SF10BW125
549 549  
550 -904.5 - SF7BW125 to SF10BW125
482 +After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
551 551  
552 -904.7 - SF7BW125 to SF10BW125
484 +[[image:image-20220610165129-11.png||height="595" width="1088"]]
553 553  
554 -904.9 - SF7BW125 to SF10BW125
555 555  
556 -905.1 - SF7BW125 to SF10BW125
557 557  
558 -905.3 - SF7BW125 to SF10BW125
488 +== 2.6  LED Indicator ==
559 559  
490 +The LDDS20 has an internal LED which is to show the status of different state.
560 560  
561 -(% style="color:blue" %)**Downlink:**
562 562  
563 -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.
564 564  
565 -923.9 - SF7BW500 to SF12BW500
566 566  
567 -924.5 - SF7BW500 to SF12BW500
568 568  
569 -925.1 - SF7BW500 to SF12BW500
500 +== 2.7  ​Firmware Change Log ==
570 570  
571 -925.7 - SF7BW500 to SF12BW500
572 572  
573 -926.3 - SF7BW500 to SF12BW500
574 -
575 -926.9 - SF7BW500 to SF12BW500
576 -
577 -927.5 - SF7BW500 to SF12BW500
578 -
579 -923.3 - SF12BW500(RX2 downlink only)
580 -
581 -
582 -
583 -)))
584 -
585 -=== 2.6.3  CN470-510 (CN470) ===
586 -
587 587  (((
588 -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/]]
589 589  )))
590 590  
591 591  (((
592 -(% style="color:blue" %)**Uplink:**
593 -)))
594 -
595 -(((
596 -486.3 - SF7BW125 to SF12BW125
597 -)))
598 -
599 -(((
600 -486.5 - SF7BW125 to SF12BW125
601 -)))
602 -
603 -(((
604 -486.7 - SF7BW125 to SF12BW125
605 -)))
606 -
607 -(((
608 -486.9 - SF7BW125 to SF12BW125
609 -)))
610 -
611 -(((
612 -487.1 - SF7BW125 to SF12BW125
613 -)))
614 -
615 -(((
616 -487.3 - SF7BW125 to SF12BW125
617 -)))
618 -
619 -(((
620 -487.5 - SF7BW125 to SF12BW125
621 -)))
622 -
623 -(((
624 -487.7 - SF7BW125 to SF12BW125
625 -)))
626 -
627 -(((
628 628  
629 629  )))
630 630  
631 631  (((
632 -(% style="color:blue" %)**Downlink:**
512 +**Firmware Upgrade Method:  [[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]**
633 633  )))
634 634  
635 -(((
636 -506.7 - SF7BW125 to SF12BW125
637 -)))
638 638  
639 -(((
640 -506.9 - SF7BW125 to SF12BW125
641 -)))
642 642  
643 -(((
644 -507.1 - SF7BW125 to SF12BW125
645 -)))
517 +== 2.8  Battery Analysis ==
646 646  
647 -(((
648 -507.3 - SF7BW125 to SF12BW125
649 -)))
650 650  
651 -(((
652 -507.5 - SF7BW125 to SF12BW125
653 -)))
654 654  
655 -(((
656 -507.7 - SF7BW125 to SF12BW125
657 -)))
658 658  
659 -(((
660 -507.9 - SF7BW125 to SF12BW125
661 -)))
522 +=== 2.8.1  Battery Type ===
662 662  
663 -(((
664 -508.1 - SF7BW125 to SF12BW125
665 -)))
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.
666 666  
667 -(((
668 -505.3 - SF12BW125 (RX2 downlink only)
669 -)))
670 670  
527 +The battery related documents as below:
671 671  
672 -
673 -=== 2.6.4  AU915-928(AU915) ===
674 -
675 -(((
676 -Default use CHE=2
677 -
678 -(% style="color:blue" %)**Uplink:**
679 -
680 -916.8 - SF7BW125 to SF12BW125
681 -
682 -917.0 - SF7BW125 to SF12BW125
683 -
684 -917.2 - SF7BW125 to SF12BW125
685 -
686 -917.4 - SF7BW125 to SF12BW125
687 -
688 -917.6 - SF7BW125 to SF12BW125
689 -
690 -917.8 - SF7BW125 to SF12BW125
691 -
692 -918.0 - SF7BW125 to SF12BW125
693 -
694 -918.2 - SF7BW125 to SF12BW125
695 -
696 -
697 -(% style="color:blue" %)**Downlink:**
698 -
699 -923.3 - SF7BW500 to SF12BW500
700 -
701 -923.9 - SF7BW500 to SF12BW500
702 -
703 -924.5 - SF7BW500 to SF12BW500
704 -
705 -925.1 - SF7BW500 to SF12BW500
706 -
707 -925.7 - SF7BW500 to SF12BW500
708 -
709 -926.3 - SF7BW500 to SF12BW500
710 -
711 -926.9 - SF7BW500 to SF12BW500
712 -
713 -927.5 - SF7BW500 to SF12BW500
714 -
715 -923.3 - SF12BW500(RX2 downlink only)
716 -
717 -
718 -
529 +* (((
530 +[[Battery Dimension>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]],
719 719  )))
720 -
721 -=== 2.6.5  AS920-923 & AS923-925 (AS923) ===
722 -
723 -(((
724 -(% style="color:blue" %)**Default Uplink channel:**
532 +* (((
533 +[[Lithium-Thionyl Chloride Battery  datasheet>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]],
725 725  )))
726 -
727 -(((
728 -923.2 - SF7BW125 to SF10BW125
535 +* (((
536 +[[Lithium-ion Battery-Capacitor datasheet>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]
729 729  )))
730 730  
731 -(((
732 -923.4 - SF7BW125 to SF10BW125
733 -)))
539 + [[image:image-20220615102527-16.png]]
734 734  
735 -(((
736 -
737 -)))
738 738  
739 -(((
740 -(% style="color:blue" %)**Additional Uplink Channel**:
741 -)))
742 742  
743 -(((
744 -(OTAA mode, channel added by JoinAccept message)
745 -)))
543 +== 2.8.2  Battery Note ==
746 746  
747 -(((
748 -
749 -)))
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.
750 750  
751 -(((
752 -(% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
753 -)))
754 754  
755 -(((
756 -922.2 - SF7BW125 to SF10BW125
757 -)))
758 758  
759 -(((
760 -922.4 - SF7BW125 to SF10BW125
761 -)))
549 +=== 2.8.3  Replace the battery ===
762 762  
763 763  (((
764 -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.
765 765  )))
766 766  
767 767  (((
768 -922.8 - SF7BW125 to SF10BW125
769 -)))
770 -
771 -(((
772 -923.0 - SF7BW125 to SF10BW125
773 -)))
774 -
775 -(((
776 -922.0 - SF7BW125 to SF10BW125
777 -)))
778 -
779 -(((
780 780  
781 781  )))
782 782  
783 783  (((
784 -(% 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)
785 785  )))
786 786  
787 -(((
788 -923.6 - SF7BW125 to SF10BW125
789 -)))
790 790  
791 -(((
792 -923.8 - SF7BW125 to SF10BW125
793 -)))
794 794  
795 -(((
796 -924.0 - SF7BW125 to SF10BW125
797 -)))
565 +== 2.8.4  Battery Life Analyze ==
798 798  
799 -(((
800 -924.2 - SF7BW125 to SF10BW125
801 -)))
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:
802 802  
803 -(((
804 -924.4 - SF7BW125 to SF10BW125
805 -)))
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]]
806 806  
807 -(((
808 -924.6 - SF7BW125 to SF10BW125
809 -)))
810 810  
811 -(((
812 -
813 -)))
814 814  
815 -(((
816 -(% style="color:blue" %)**Downlink:**
817 -)))
818 -
819 -(((
820 -Uplink channels 1-8 (RX1)
821 -)))
822 -
823 -(((
824 -923.2 - SF10BW125 (RX2)
825 -)))
826 -
827 -
828 -
829 -=== 2.6.6  KR920-923 (KR920) ===
830 -
831 -(((
832 -(% style="color:blue" %)**Default channel:**
833 -)))
834 -
835 -(((
836 -922.1 - SF7BW125 to SF12BW125
837 -)))
838 -
839 -(((
840 -922.3 - SF7BW125 to SF12BW125
841 -)))
842 -
843 -(((
844 -922.5 - SF7BW125 to SF12BW125
845 -)))
846 -
847 -(((
848 -
849 -)))
850 -
851 -(((
852 -(% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
853 -)))
854 -
855 -(((
856 -922.1 - SF7BW125 to SF12BW125
857 -)))
858 -
859 -(((
860 -922.3 - SF7BW125 to SF12BW125
861 -)))
862 -
863 -(((
864 -922.5 - SF7BW125 to SF12BW125
865 -)))
866 -
867 -(((
868 -922.7 - SF7BW125 to SF12BW125
869 -)))
870 -
871 -(((
872 -922.9 - SF7BW125 to SF12BW125
873 -)))
874 -
875 -(((
876 -923.1 - SF7BW125 to SF12BW125
877 -)))
878 -
879 -(((
880 -923.3 - SF7BW125 to SF12BW125
881 -)))
882 -
883 -(((
884 -
885 -)))
886 -
887 -(((
888 -(% style="color:blue" %)**Downlink:**
889 -)))
890 -
891 -(((
892 -Uplink channels 1-7(RX1)
893 -)))
894 -
895 -(((
896 -921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
897 -)))
898 -
899 -
900 -
901 -=== 2.6.7  IN865-867 (IN865) ===
902 -
903 -(((
904 -(% style="color:blue" %)**Uplink:**
905 -)))
906 -
907 -(((
908 -865.0625 - SF7BW125 to SF12BW125
909 -)))
910 -
911 -(((
912 -865.4025 - SF7BW125 to SF12BW125
913 -)))
914 -
915 -(((
916 -865.9850 - SF7BW125 to SF12BW125
917 -)))
918 -
919 -(((
920 -
921 -)))
922 -
923 -(((
924 -(% style="color:blue" %)**Downlink:**
925 -)))
926 -
927 -(((
928 -Uplink channels 1-3 (RX1)
929 -)))
930 -
931 -(((
932 -866.550 - SF10BW125 (RX2)
933 -)))
934 -
935 -
936 -
937 -== 2.7  LED Indicator ==
938 -
939 -The LDDS75 has an internal LED which is to show the status of different state.
940 -
941 -
942 -* Blink once when device power on.
943 -* The device detects the sensor and flashes 5 times.
944 -* Solid ON for 5 seconds once device successful Join the network.
945 -* Blink once when device transmit a packet.
946 -
947 -== 2.8  ​Firmware Change Log ==
948 -
949 -
950 -(((
951 -**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/]]
952 -)))
953 -
954 -(((
955 -
956 -)))
957 -
958 -(((
959 -**Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
960 -)))
961 -
962 -
963 -
964 -== 2.9  Mechanical ==
965 -
966 -
967 -[[image:image-20220610172003-1.png]]
968 -
969 -
970 -[[image:image-20220610172003-2.png]]
971 -
972 -
973 -
974 -== 2.10  Battery Analysis ==
975 -
976 -=== 2.10.1  Battery Type ===
977 -
978 -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.
979 -
980 -
981 -The battery related documents as below:
982 -
983 -* (((
984 -[[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
985 -)))
986 -* (((
987 -[[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
988 -)))
989 -* (((
990 -[[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]]
991 -)))
992 -
993 - [[image:image-20220610172400-3.png]]
994 -
995 -
996 -
997 -=== 2.10.2  Replace the battery ===
998 -
999 -(((
1000 -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.
1001 -)))
1002 -
1003 -(((
1004 -
1005 -)))
1006 -
1007 -(((
1008 -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)
1009 -)))
1010 -
1011 -
1012 -
1013 1013  = 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
1014 1014  
1015 1015  (((
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