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Last modified by Mengting Qiu on 2025/08/06 17:02
From version 170.1
edited by Xiaoling
on 2022/06/15 09:37
Change comment: Uploaded new attachment "1655257026882-201.png", version {1}
To version 174.7
edited by Xiaoling
on 2022/06/15 10:34
Change comment: There is no comment for this version

Summary

Details

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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.
... ... @@ -199,25 +199,30 @@
199 199  * Smart liquid control solution.
200 200  * Smart liquefied gas solution.
201 201  
201 +== 1.7  Precautions ==
202 202  
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.
203 203  
204 -== 1.6  Pin mapping and power on ==
207 +== 1.8  Pin mapping and power on ==
205 205  
206 206  
207 -[[image:1654847583902-256.png]]
210 +[[image:1655257026882-201.png]]
208 208  
209 209  
210 210  
211 -= 2.  Configure LDDS75 to connect to LoRaWAN network =
214 += 2.  Configure LDDS20 to connect to LoRaWAN network =
212 212  
216 +
213 213  == 2.1  How it works ==
214 214  
215 215  (((
216 -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.
217 217  )))
218 218  
219 219  (((
220 -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.
221 221  )))
222 222  
223 223  
... ... @@ -229,7 +229,7 @@
229 229  )))
230 230  
231 231  (((
232 -[[image:1654848616367-242.png]]
236 +[[image:1655257698953-697.png]]
233 233  )))
234 234  
235 235  (((
... ... @@ -239,11 +239,11 @@
239 239  (((
240 240  
241 241  
242 -(% 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.
243 243  )))
244 244  
245 245  (((
246 -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.
247 247  )))
248 248  
249 249  [[image:image-20220607170145-1.jpeg]]
... ... @@ -273,6 +273,7 @@
273 273  [[image:image-20220610161353-7.png]]
274 274  
275 275  
280 +
276 276  You can also choose to create the device manually.
277 277  
278 278   [[image:image-20220610161538-8.png]]
... ... @@ -285,16 +285,17 @@
285 285  
286 286  
287 287  
288 -(% style="color:blue" %)**Step 2**(%%): Power on LDDS75
293 +(% style="color:blue" %)**Step 2**(%%):  Power on LDDS20
289 289  
290 290  
291 291  Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
292 292  
293 -[[image:image-20220610161724-10.png]]
298 +[[image:image-20220615095102-14.png]]
294 294  
295 295  
301 +
296 296  (((
297 -(% 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.
298 298  )))
299 299  
300 300  [[image:1654849068701-275.png]]
... ... @@ -305,12 +305,10 @@
305 305  
306 306  (((
307 307  (((
308 -LDDS75 will uplink payload via LoRaWAN with below payload format: 
309 -)))
314 +LDDS20 will uplink payload via LoRaWAN with below payload format: 
310 310  
311 -(((
312 -Uplink payload includes in total 4 bytes.
313 -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).
314 314  )))
315 315  )))
316 316  
... ... @@ -337,7 +337,7 @@
337 337  === 2.3.1  Battery Info ===
338 338  
339 339  
340 -Check the battery voltage for LDDS75.
344 +Check the battery voltage for LDDS20.
341 341  
342 342  Ex1: 0x0B45 = 2885mV
343 343  
... ... @@ -348,20 +348,21 @@
348 348  === 2.3.2  Distance ===
349 349  
350 350  (((
351 -Get the distance. Flat object range 280mm - 7500mm.
355 +Get the distance. Flat object range 20mm - 2000mm.
352 352  )))
353 353  
354 354  (((
355 -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.**
356 356  )))
357 357  
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.
358 358  
359 -* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
360 -* 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.
361 361  
366 +
362 362  === 2.3.3  Interrupt Pin ===
363 363  
364 -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.
365 365  
366 366  **Example:**
367 367  
... ... @@ -407,599 +407,164 @@
407 407  The payload decoder function for TTN V3 is here:
408 408  
409 409  (((
410 -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/]]
411 411  )))
412 412  
413 413  
414 414  
415 -== 2.4  Uplink Interval ==
420 +== 2.4  Downlink Payload ==
416 416  
417 -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.
418 418  
424 +[[image:image-20220615100930-15.png]]
419 419  
420 420  
421 -== 2.5  ​Show Data in DataCake IoT Server ==
427 +**Examples:**
422 422  
423 -(((
424 -[[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:
425 -)))
426 426  
427 -(((
428 -
429 -)))
430 +* (% style="color:blue" %)**Set TDC**
430 430  
431 -(((
432 -(% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
433 -)))
432 +If the payload=0100003C, it means set the END Node's TDC to 0x00003C=60(S), while type code is 01.
434 434  
435 -(((
436 -(% 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:**
437 -)))
434 +Payload:    01 00 00 1E    TDC=30S
438 438  
436 +Payload:    01 00 00 3C    TDC=60S
439 439  
440 -[[image:1654592790040-760.png]]
441 441  
439 +* (% style="color:blue" %)**Reset**
442 442  
443 -[[image:1654592800389-571.png]]
441 +If payload = 0x04FF, it will reset the LDDS20
444 444  
445 445  
446 -(% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
444 +* (% style="color:blue" %)**CFM**
447 447  
448 -(% 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
449 449  
450 -[[image:1654851029373-510.png]]
451 451  
452 452  
453 -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 ==
454 454  
455 -[[image:image-20220610165129-11.png||height="595" width="1088"]]
456 -
457 -
458 -
459 -== 2.6  Frequency Plans ==
460 -
461 461  (((
462 -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:
463 463  )))
464 464  
465 -
466 -
467 -=== 2.6.1  EU863-870 (EU868) ===
468 -
469 469  (((
470 -(% style="color:blue" %)**Uplink:**
471 -)))
472 -
473 -(((
474 -868.1 - SF7BW125 to SF12BW125
475 -)))
476 -
477 -(((
478 -868.3 - SF7BW125 to SF12BW125 and SF7BW250
479 -)))
480 -
481 -(((
482 -868.5 - SF7BW125 to SF12BW125
483 -)))
484 -
485 -(((
486 -867.1 - SF7BW125 to SF12BW125
487 -)))
488 -
489 -(((
490 -867.3 - SF7BW125 to SF12BW125
491 -)))
492 -
493 -(((
494 -867.5 - SF7BW125 to SF12BW125
495 -)))
496 -
497 -(((
498 -867.7 - SF7BW125 to SF12BW125
499 -)))
500 -
501 -(((
502 -867.9 - SF7BW125 to SF12BW125
503 -)))
504 -
505 -(((
506 -868.8 - FSK
507 -)))
508 -
509 -(((
510 510  
511 511  )))
512 512  
513 513  (((
514 -(% 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.**
515 515  )))
516 516  
517 517  (((
518 -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:**
519 519  )))
520 520  
521 -(((
522 -869.525 - SF9BW125 (RX2 downlink only)
523 -)))
524 524  
469 +[[image:1654592790040-760.png]]
525 525  
526 526  
527 -=== 2.6.2  US902-928(US915) ===
472 +[[image:1654592800389-571.png]]
528 528  
529 -(((
530 -Used in USA, Canada and South America. Default use CHE=2
531 531  
532 -(% style="color:blue" %)**Uplink:**
475 +(% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
533 533  
534 -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)(%%)**
535 535  
536 -904.1 - SF7BW125 to SF10BW125
479 +[[image:1654851029373-510.png]]
537 537  
538 -904.3 - SF7BW125 to SF10BW125
539 539  
540 -904.5 - SF7BW125 to SF10BW125
482 +After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
541 541  
542 -904.7 - SF7BW125 to SF10BW125
484 +[[image:image-20220610165129-11.png||height="595" width="1088"]]
543 543  
544 -904.9 - SF7BW125 to SF10BW125
545 545  
546 -905.1 - SF7BW125 to SF10BW125
547 547  
548 -905.3 - SF7BW125 to SF10BW125
488 +== 2.6  LED Indicator ==
549 549  
490 +The LDDS20 has an internal LED which is to show the status of different state.
550 550  
551 -(% style="color:blue" %)**Downlink:**
552 552  
553 -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.
554 554  
555 -923.9 - SF7BW500 to SF12BW500
556 556  
557 -924.5 - SF7BW500 to SF12BW500
558 558  
559 -925.1 - SF7BW500 to SF12BW500
500 +== 2.7  ​Firmware Change Log ==
560 560  
561 -925.7 - SF7BW500 to SF12BW500
562 562  
563 -926.3 - SF7BW500 to SF12BW500
564 -
565 -926.9 - SF7BW500 to SF12BW500
566 -
567 -927.5 - SF7BW500 to SF12BW500
568 -
569 -923.3 - SF12BW500(RX2 downlink only)
570 -
571 -
572 -
573 -)))
574 -
575 -=== 2.6.3  CN470-510 (CN470) ===
576 -
577 577  (((
578 -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/]]
579 579  )))
580 580  
581 581  (((
582 -(% style="color:blue" %)**Uplink:**
583 -)))
584 -
585 -(((
586 -486.3 - SF7BW125 to SF12BW125
587 -)))
588 -
589 -(((
590 -486.5 - SF7BW125 to SF12BW125
591 -)))
592 -
593 -(((
594 -486.7 - SF7BW125 to SF12BW125
595 -)))
596 -
597 -(((
598 -486.9 - SF7BW125 to SF12BW125
599 -)))
600 -
601 -(((
602 -487.1 - SF7BW125 to SF12BW125
603 -)))
604 -
605 -(((
606 -487.3 - SF7BW125 to SF12BW125
607 -)))
608 -
609 -(((
610 -487.5 - SF7BW125 to SF12BW125
611 -)))
612 -
613 -(((
614 -487.7 - SF7BW125 to SF12BW125
615 -)))
616 -
617 -(((
618 618  
619 619  )))
620 620  
621 621  (((
622 -(% style="color:blue" %)**Downlink:**
512 +**Firmware Upgrade Method:  [[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]**
623 623  )))
624 624  
625 -(((
626 -506.7 - SF7BW125 to SF12BW125
627 -)))
628 628  
629 -(((
630 -506.9 - SF7BW125 to SF12BW125
631 -)))
632 632  
633 -(((
634 -507.1 - SF7BW125 to SF12BW125
635 -)))
517 +== 2.8  Battery Analysis ==
636 636  
637 -(((
638 -507.3 - SF7BW125 to SF12BW125
639 -)))
640 640  
641 -(((
642 -507.5 - SF7BW125 to SF12BW125
643 -)))
644 644  
645 -(((
646 -507.7 - SF7BW125 to SF12BW125
647 -)))
648 648  
649 -(((
650 -507.9 - SF7BW125 to SF12BW125
651 -)))
522 +=== 2.8.1  Battery Type ===
652 652  
653 -(((
654 -508.1 - SF7BW125 to SF12BW125
655 -)))
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.
656 656  
657 -(((
658 -505.3 - SF12BW125 (RX2 downlink only)
659 -)))
660 660  
527 +The battery related documents as below:
661 661  
662 -
663 -=== 2.6.4  AU915-928(AU915) ===
664 -
665 -(((
666 -Default use CHE=2
667 -
668 -(% style="color:blue" %)**Uplink:**
669 -
670 -916.8 - SF7BW125 to SF12BW125
671 -
672 -917.0 - SF7BW125 to SF12BW125
673 -
674 -917.2 - SF7BW125 to SF12BW125
675 -
676 -917.4 - SF7BW125 to SF12BW125
677 -
678 -917.6 - SF7BW125 to SF12BW125
679 -
680 -917.8 - SF7BW125 to SF12BW125
681 -
682 -918.0 - SF7BW125 to SF12BW125
683 -
684 -918.2 - SF7BW125 to SF12BW125
685 -
686 -
687 -(% style="color:blue" %)**Downlink:**
688 -
689 -923.3 - SF7BW500 to SF12BW500
690 -
691 -923.9 - SF7BW500 to SF12BW500
692 -
693 -924.5 - SF7BW500 to SF12BW500
694 -
695 -925.1 - SF7BW500 to SF12BW500
696 -
697 -925.7 - SF7BW500 to SF12BW500
698 -
699 -926.3 - SF7BW500 to SF12BW500
700 -
701 -926.9 - SF7BW500 to SF12BW500
702 -
703 -927.5 - SF7BW500 to SF12BW500
704 -
705 -923.3 - SF12BW500(RX2 downlink only)
706 -
707 -
708 -
529 +* (((
530 +[[Battery Dimension>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]],
709 709  )))
710 -
711 -=== 2.6.5  AS920-923 & AS923-925 (AS923) ===
712 -
713 -(((
714 -(% style="color:blue" %)**Default Uplink channel:**
532 +* (((
533 +[[Lithium-Thionyl Chloride Battery  datasheet>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]],
715 715  )))
716 -
717 -(((
718 -923.2 - SF7BW125 to SF10BW125
535 +* (((
536 +[[Lithium-ion Battery-Capacitor datasheet>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]
719 719  )))
720 720  
721 -(((
722 -923.4 - SF7BW125 to SF10BW125
723 -)))
539 + [[image:image-20220615102527-16.png]]
724 724  
725 -(((
726 -
727 -)))
728 728  
729 -(((
730 -(% style="color:blue" %)**Additional Uplink Channel**:
731 -)))
732 732  
733 -(((
734 -(OTAA mode, channel added by JoinAccept message)
735 -)))
543 +== 2.8.2  Battery Note ==
736 736  
737 -(((
738 -
739 -)))
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.
740 740  
741 -(((
742 -(% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
743 -)))
744 744  
745 -(((
746 -922.2 - SF7BW125 to SF10BW125
747 -)))
748 748  
749 -(((
750 -922.4 - SF7BW125 to SF10BW125
751 -)))
549 +=== 2.8.3  Replace the battery ===
752 752  
753 753  (((
754 -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.
755 755  )))
756 756  
757 757  (((
758 -922.8 - SF7BW125 to SF10BW125
759 -)))
760 -
761 -(((
762 -923.0 - SF7BW125 to SF10BW125
763 -)))
764 -
765 -(((
766 -922.0 - SF7BW125 to SF10BW125
767 -)))
768 -
769 -(((
770 770  
771 771  )))
772 772  
773 773  (((
774 -(% 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)
775 775  )))
776 776  
777 -(((
778 -923.6 - SF7BW125 to SF10BW125
779 -)))
780 780  
781 -(((
782 -923.8 - SF7BW125 to SF10BW125
783 -)))
784 784  
785 -(((
786 -924.0 - SF7BW125 to SF10BW125
787 -)))
565 +== 2.8.4  Battery Life Analyze ==
788 788  
789 -(((
790 -924.2 - SF7BW125 to SF10BW125
791 -)))
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:
792 792  
793 -(((
794 -924.4 - SF7BW125 to SF10BW125
795 -)))
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]]
796 796  
797 -(((
798 -924.6 - SF7BW125 to SF10BW125
799 -)))
800 800  
801 -(((
802 -
803 -)))
804 804  
805 -(((
806 -(% style="color:blue" %)**Downlink:**
807 -)))
808 -
809 -(((
810 -Uplink channels 1-8 (RX1)
811 -)))
812 -
813 -(((
814 -923.2 - SF10BW125 (RX2)
815 -)))
816 -
817 -
818 -
819 -=== 2.6.6  KR920-923 (KR920) ===
820 -
821 -(((
822 -(% style="color:blue" %)**Default channel:**
823 -)))
824 -
825 -(((
826 -922.1 - SF7BW125 to SF12BW125
827 -)))
828 -
829 -(((
830 -922.3 - SF7BW125 to SF12BW125
831 -)))
832 -
833 -(((
834 -922.5 - SF7BW125 to SF12BW125
835 -)))
836 -
837 -(((
838 -
839 -)))
840 -
841 -(((
842 -(% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
843 -)))
844 -
845 -(((
846 -922.1 - SF7BW125 to SF12BW125
847 -)))
848 -
849 -(((
850 -922.3 - SF7BW125 to SF12BW125
851 -)))
852 -
853 -(((
854 -922.5 - SF7BW125 to SF12BW125
855 -)))
856 -
857 -(((
858 -922.7 - SF7BW125 to SF12BW125
859 -)))
860 -
861 -(((
862 -922.9 - SF7BW125 to SF12BW125
863 -)))
864 -
865 -(((
866 -923.1 - SF7BW125 to SF12BW125
867 -)))
868 -
869 -(((
870 -923.3 - SF7BW125 to SF12BW125
871 -)))
872 -
873 -(((
874 -
875 -)))
876 -
877 -(((
878 -(% style="color:blue" %)**Downlink:**
879 -)))
880 -
881 -(((
882 -Uplink channels 1-7(RX1)
883 -)))
884 -
885 -(((
886 -921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
887 -)))
888 -
889 -
890 -
891 -=== 2.6.7  IN865-867 (IN865) ===
892 -
893 -(((
894 -(% style="color:blue" %)**Uplink:**
895 -)))
896 -
897 -(((
898 -865.0625 - SF7BW125 to SF12BW125
899 -)))
900 -
901 -(((
902 -865.4025 - SF7BW125 to SF12BW125
903 -)))
904 -
905 -(((
906 -865.9850 - SF7BW125 to SF12BW125
907 -)))
908 -
909 -(((
910 -
911 -)))
912 -
913 -(((
914 -(% style="color:blue" %)**Downlink:**
915 -)))
916 -
917 -(((
918 -Uplink channels 1-3 (RX1)
919 -)))
920 -
921 -(((
922 -866.550 - SF10BW125 (RX2)
923 -)))
924 -
925 -
926 -
927 -== 2.7  LED Indicator ==
928 -
929 -The LDDS75 has an internal LED which is to show the status of different state.
930 -
931 -
932 -* Blink once when device power on.
933 -* The device detects the sensor and flashes 5 times.
934 -* Solid ON for 5 seconds once device successful Join the network.
935 -* Blink once when device transmit a packet.
936 -
937 -== 2.8  ​Firmware Change Log ==
938 -
939 -
940 -(((
941 -**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/]]
942 -)))
943 -
944 -(((
945 -
946 -)))
947 -
948 -(((
949 -**Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
950 -)))
951 -
952 -
953 -
954 -== 2.9  Mechanical ==
955 -
956 -
957 -[[image:image-20220610172003-1.png]]
958 -
959 -
960 -[[image:image-20220610172003-2.png]]
961 -
962 -
963 -
964 -== 2.10  Battery Analysis ==
965 -
966 -=== 2.10.1  Battery Type ===
967 -
968 -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.
969 -
970 -
971 -The battery related documents as below:
972 -
973 -* (((
974 -[[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
975 -)))
976 -* (((
977 -[[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
978 -)))
979 -* (((
980 -[[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]]
981 -)))
982 -
983 - [[image:image-20220610172400-3.png]]
984 -
985 -
986 -
987 -=== 2.10.2  Replace the battery ===
988 -
989 -(((
990 -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.
991 -)))
992 -
993 -(((
994 -
995 -)))
996 -
997 -(((
998 -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)
999 -)))
1000 -
1001 -
1002 -
1003 1003  = 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
1004 1004  
1005 1005  (((
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