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Last modified by Mengting Qiu on 2025/08/06 17:02
From version 169.5
edited by Xiaoling
on 2022/06/15 09:34
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
... ... @@ -100,7 +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.
... ... @@ -182,6 +182,7 @@
182 182  
183 183  [[image:image-20220615091045-8.png||height="226" width="380"]] [[image:image-20220615091045-9.png||height="239" width="339"]]
184 184  
184 +
185 185  (% style="color:red" %)**Note 1:**
186 186  
187 187  Eproxy AB glue needs 3~~ 5 minutes to stable attached. we can use other glue material to keep it in the position.
... ... @@ -193,38 +193,35 @@
193 193  
194 194  
195 195  
196 +== 1.6 ​ Applications ==
196 196  
198 +* Smart liquid control solution.
199 +* Smart liquefied gas solution.
197 197  
201 +== 1.7  Precautions ==
198 198  
199 -== 1.5 ​ Applications ==
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.
200 200  
201 -* Horizontal distance measurement
202 -* Liquid level measurement
203 -* Parking management system
204 -* Object proximity and presence detection
205 -* Intelligent trash can management system
206 -* Robot obstacle avoidance
207 -* Automatic control
208 -* Sewer
209 -* Bottom water level monitoring
207 +== 1.8  Pin mapping and power on ==
210 210  
211 -== 1.6  Pin mapping and power on ==
212 212  
210 +[[image:1655257026882-201.png]]
213 213  
214 -[[image:1654847583902-256.png]]
215 215  
216 216  
214 += 2.  Configure LDDS20 to connect to LoRaWAN network =
217 217  
218 -= 2.  Configure LDDS75 to connect to LoRaWAN network =
219 219  
220 220  == 2.1  How it works ==
221 221  
222 222  (((
223 -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.
224 224  )))
225 225  
226 226  (((
227 -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.
228 228  )))
229 229  
230 230  
... ... @@ -236,7 +236,7 @@
236 236  )))
237 237  
238 238  (((
239 -[[image:1654848616367-242.png]]
236 +[[image:1655257698953-697.png]]
240 240  )))
241 241  
242 242  (((
... ... @@ -246,11 +246,11 @@
246 246  (((
247 247  
248 248  
249 -(% 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.
250 250  )))
251 251  
252 252  (((
253 -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.
254 254  )))
255 255  
256 256  [[image:image-20220607170145-1.jpeg]]
... ... @@ -280,6 +280,7 @@
280 280  [[image:image-20220610161353-7.png]]
281 281  
282 282  
280 +
283 283  You can also choose to create the device manually.
284 284  
285 285   [[image:image-20220610161538-8.png]]
... ... @@ -292,16 +292,17 @@
292 292  
293 293  
294 294  
295 -(% style="color:blue" %)**Step 2**(%%): Power on LDDS75
293 +(% style="color:blue" %)**Step 2**(%%):  Power on LDDS20
296 296  
297 297  
298 298  Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
299 299  
300 -[[image:image-20220610161724-10.png]]
298 +[[image:image-20220615095102-14.png]]
301 301  
302 302  
301 +
303 303  (((
304 -(% 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.
305 305  )))
306 306  
307 307  [[image:1654849068701-275.png]]
... ... @@ -312,12 +312,10 @@
312 312  
313 313  (((
314 314  (((
315 -LDDS75 will uplink payload via LoRaWAN with below payload format: 
316 -)))
314 +LDDS20 will uplink payload via LoRaWAN with below payload format: 
317 317  
318 -(((
319 -Uplink payload includes in total 4 bytes.
320 -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).
321 321  )))
322 322  )))
323 323  
... ... @@ -344,7 +344,7 @@
344 344  === 2.3.1  Battery Info ===
345 345  
346 346  
347 -Check the battery voltage for LDDS75.
344 +Check the battery voltage for LDDS20.
348 348  
349 349  Ex1: 0x0B45 = 2885mV
350 350  
... ... @@ -355,20 +355,21 @@
355 355  === 2.3.2  Distance ===
356 356  
357 357  (((
358 -Get the distance. Flat object range 280mm - 7500mm.
355 +Get the distance. Flat object range 20mm - 2000mm.
359 359  )))
360 360  
361 361  (((
362 -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.**
363 363  )))
364 364  
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.
365 365  
366 -* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
367 -* 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.
368 368  
366 +
369 369  === 2.3.3  Interrupt Pin ===
370 370  
371 -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.
372 372  
373 373  **Example:**
374 374  
... ... @@ -414,599 +414,164 @@
414 414  The payload decoder function for TTN V3 is here:
415 415  
416 416  (((
417 -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/]]
418 418  )))
419 419  
420 420  
421 421  
422 -== 2.4  Uplink Interval ==
420 +== 2.4  Downlink Payload ==
423 423  
424 -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.
425 425  
424 +[[image:image-20220615100930-15.png]]
426 426  
427 427  
428 -== 2.5  ​Show Data in DataCake IoT Server ==
427 +**Examples:**
429 429  
430 -(((
431 -[[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:
432 -)))
433 433  
434 -(((
435 -
436 -)))
430 +* (% style="color:blue" %)**Set TDC**
437 437  
438 -(((
439 -(% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
440 -)))
432 +If the payload=0100003C, it means set the END Node's TDC to 0x00003C=60(S), while type code is 01.
441 441  
442 -(((
443 -(% 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:**
444 -)))
434 +Payload:    01 00 00 1E    TDC=30S
445 445  
436 +Payload:    01 00 00 3C    TDC=60S
446 446  
447 -[[image:1654592790040-760.png]]
448 448  
439 +* (% style="color:blue" %)**Reset**
449 449  
450 -[[image:1654592800389-571.png]]
441 +If payload = 0x04FF, it will reset the LDDS20
451 451  
452 452  
453 -(% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
444 +* (% style="color:blue" %)**CFM**
454 454  
455 -(% 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
456 456  
457 -[[image:1654851029373-510.png]]
458 458  
459 459  
460 -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 ==
461 461  
462 -[[image:image-20220610165129-11.png||height="595" width="1088"]]
463 -
464 -
465 -
466 -== 2.6  Frequency Plans ==
467 -
468 468  (((
469 -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:
470 470  )))
471 471  
472 -
473 -
474 -=== 2.6.1  EU863-870 (EU868) ===
475 -
476 476  (((
477 -(% style="color:blue" %)**Uplink:**
478 -)))
479 -
480 -(((
481 -868.1 - SF7BW125 to SF12BW125
482 -)))
483 -
484 -(((
485 -868.3 - SF7BW125 to SF12BW125 and SF7BW250
486 -)))
487 -
488 -(((
489 -868.5 - SF7BW125 to SF12BW125
490 -)))
491 -
492 -(((
493 -867.1 - SF7BW125 to SF12BW125
494 -)))
495 -
496 -(((
497 -867.3 - SF7BW125 to SF12BW125
498 -)))
499 -
500 -(((
501 -867.5 - SF7BW125 to SF12BW125
502 -)))
503 -
504 -(((
505 -867.7 - SF7BW125 to SF12BW125
506 -)))
507 -
508 -(((
509 -867.9 - SF7BW125 to SF12BW125
510 -)))
511 -
512 -(((
513 -868.8 - FSK
514 -)))
515 -
516 -(((
517 517  
518 518  )))
519 519  
520 520  (((
521 -(% 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.**
522 522  )))
523 523  
524 524  (((
525 -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:**
526 526  )))
527 527  
528 -(((
529 -869.525 - SF9BW125 (RX2 downlink only)
530 -)))
531 531  
469 +[[image:1654592790040-760.png]]
532 532  
533 533  
534 -=== 2.6.2  US902-928(US915) ===
472 +[[image:1654592800389-571.png]]
535 535  
536 -(((
537 -Used in USA, Canada and South America. Default use CHE=2
538 538  
539 -(% style="color:blue" %)**Uplink:**
475 +(% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
540 540  
541 -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)(%%)**
542 542  
543 -904.1 - SF7BW125 to SF10BW125
479 +[[image:1654851029373-510.png]]
544 544  
545 -904.3 - SF7BW125 to SF10BW125
546 546  
547 -904.5 - SF7BW125 to SF10BW125
482 +After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
548 548  
549 -904.7 - SF7BW125 to SF10BW125
484 +[[image:image-20220610165129-11.png||height="595" width="1088"]]
550 550  
551 -904.9 - SF7BW125 to SF10BW125
552 552  
553 -905.1 - SF7BW125 to SF10BW125
554 554  
555 -905.3 - SF7BW125 to SF10BW125
488 +== 2.6  LED Indicator ==
556 556  
490 +The LDDS20 has an internal LED which is to show the status of different state.
557 557  
558 -(% style="color:blue" %)**Downlink:**
559 559  
560 -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.
561 561  
562 -923.9 - SF7BW500 to SF12BW500
563 563  
564 -924.5 - SF7BW500 to SF12BW500
565 565  
566 -925.1 - SF7BW500 to SF12BW500
500 +== 2.7  ​Firmware Change Log ==
567 567  
568 -925.7 - SF7BW500 to SF12BW500
569 569  
570 -926.3 - SF7BW500 to SF12BW500
571 -
572 -926.9 - SF7BW500 to SF12BW500
573 -
574 -927.5 - SF7BW500 to SF12BW500
575 -
576 -923.3 - SF12BW500(RX2 downlink only)
577 -
578 -
579 -
580 -)))
581 -
582 -=== 2.6.3  CN470-510 (CN470) ===
583 -
584 584  (((
585 -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/]]
586 586  )))
587 587  
588 588  (((
589 -(% style="color:blue" %)**Uplink:**
590 -)))
591 -
592 -(((
593 -486.3 - SF7BW125 to SF12BW125
594 -)))
595 -
596 -(((
597 -486.5 - SF7BW125 to SF12BW125
598 -)))
599 -
600 -(((
601 -486.7 - SF7BW125 to SF12BW125
602 -)))
603 -
604 -(((
605 -486.9 - SF7BW125 to SF12BW125
606 -)))
607 -
608 -(((
609 -487.1 - SF7BW125 to SF12BW125
610 -)))
611 -
612 -(((
613 -487.3 - SF7BW125 to SF12BW125
614 -)))
615 -
616 -(((
617 -487.5 - SF7BW125 to SF12BW125
618 -)))
619 -
620 -(((
621 -487.7 - SF7BW125 to SF12BW125
622 -)))
623 -
624 -(((
625 625  
626 626  )))
627 627  
628 628  (((
629 -(% style="color:blue" %)**Downlink:**
512 +**Firmware Upgrade Method:  [[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]**
630 630  )))
631 631  
632 -(((
633 -506.7 - SF7BW125 to SF12BW125
634 -)))
635 635  
636 -(((
637 -506.9 - SF7BW125 to SF12BW125
638 -)))
639 639  
640 -(((
641 -507.1 - SF7BW125 to SF12BW125
642 -)))
517 +== 2.8  Battery Analysis ==
643 643  
644 -(((
645 -507.3 - SF7BW125 to SF12BW125
646 -)))
647 647  
648 -(((
649 -507.5 - SF7BW125 to SF12BW125
650 -)))
651 651  
652 -(((
653 -507.7 - SF7BW125 to SF12BW125
654 -)))
655 655  
656 -(((
657 -507.9 - SF7BW125 to SF12BW125
658 -)))
522 +=== 2.8.1  Battery Type ===
659 659  
660 -(((
661 -508.1 - SF7BW125 to SF12BW125
662 -)))
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.
663 663  
664 -(((
665 -505.3 - SF12BW125 (RX2 downlink only)
666 -)))
667 667  
527 +The battery related documents as below:
668 668  
669 -
670 -=== 2.6.4  AU915-928(AU915) ===
671 -
672 -(((
673 -Default use CHE=2
674 -
675 -(% style="color:blue" %)**Uplink:**
676 -
677 -916.8 - SF7BW125 to SF12BW125
678 -
679 -917.0 - SF7BW125 to SF12BW125
680 -
681 -917.2 - SF7BW125 to SF12BW125
682 -
683 -917.4 - SF7BW125 to SF12BW125
684 -
685 -917.6 - SF7BW125 to SF12BW125
686 -
687 -917.8 - SF7BW125 to SF12BW125
688 -
689 -918.0 - SF7BW125 to SF12BW125
690 -
691 -918.2 - SF7BW125 to SF12BW125
692 -
693 -
694 -(% style="color:blue" %)**Downlink:**
695 -
696 -923.3 - SF7BW500 to SF12BW500
697 -
698 -923.9 - SF7BW500 to SF12BW500
699 -
700 -924.5 - SF7BW500 to SF12BW500
701 -
702 -925.1 - SF7BW500 to SF12BW500
703 -
704 -925.7 - SF7BW500 to SF12BW500
705 -
706 -926.3 - SF7BW500 to SF12BW500
707 -
708 -926.9 - SF7BW500 to SF12BW500
709 -
710 -927.5 - SF7BW500 to SF12BW500
711 -
712 -923.3 - SF12BW500(RX2 downlink only)
713 -
714 -
715 -
529 +* (((
530 +[[Battery Dimension>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]],
716 716  )))
717 -
718 -=== 2.6.5  AS920-923 & AS923-925 (AS923) ===
719 -
720 -(((
721 -(% style="color:blue" %)**Default Uplink channel:**
532 +* (((
533 +[[Lithium-Thionyl Chloride Battery  datasheet>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]],
722 722  )))
723 -
724 -(((
725 -923.2 - SF7BW125 to SF10BW125
535 +* (((
536 +[[Lithium-ion Battery-Capacitor datasheet>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]
726 726  )))
727 727  
728 -(((
729 -923.4 - SF7BW125 to SF10BW125
730 -)))
539 + [[image:image-20220615102527-16.png]]
731 731  
732 -(((
733 -
734 -)))
735 735  
736 -(((
737 -(% style="color:blue" %)**Additional Uplink Channel**:
738 -)))
739 739  
740 -(((
741 -(OTAA mode, channel added by JoinAccept message)
742 -)))
543 +== 2.8.2  Battery Note ==
743 743  
744 -(((
745 -
746 -)))
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.
747 747  
748 -(((
749 -(% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
750 -)))
751 751  
752 -(((
753 -922.2 - SF7BW125 to SF10BW125
754 -)))
755 755  
756 -(((
757 -922.4 - SF7BW125 to SF10BW125
758 -)))
549 +=== 2.8.3  Replace the battery ===
759 759  
760 760  (((
761 -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.
762 762  )))
763 763  
764 764  (((
765 -922.8 - SF7BW125 to SF10BW125
766 -)))
767 -
768 -(((
769 -923.0 - SF7BW125 to SF10BW125
770 -)))
771 -
772 -(((
773 -922.0 - SF7BW125 to SF10BW125
774 -)))
775 -
776 -(((
777 777  
778 778  )))
779 779  
780 780  (((
781 -(% 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)
782 782  )))
783 783  
784 -(((
785 -923.6 - SF7BW125 to SF10BW125
786 -)))
787 787  
788 -(((
789 -923.8 - SF7BW125 to SF10BW125
790 -)))
791 791  
792 -(((
793 -924.0 - SF7BW125 to SF10BW125
794 -)))
565 +== 2.8.4  Battery Life Analyze ==
795 795  
796 -(((
797 -924.2 - SF7BW125 to SF10BW125
798 -)))
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:
799 799  
800 -(((
801 -924.4 - SF7BW125 to SF10BW125
802 -)))
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]]
803 803  
804 -(((
805 -924.6 - SF7BW125 to SF10BW125
806 -)))
807 807  
808 -(((
809 -
810 -)))
811 811  
812 -(((
813 -(% style="color:blue" %)**Downlink:**
814 -)))
815 -
816 -(((
817 -Uplink channels 1-8 (RX1)
818 -)))
819 -
820 -(((
821 -923.2 - SF10BW125 (RX2)
822 -)))
823 -
824 -
825 -
826 -=== 2.6.6  KR920-923 (KR920) ===
827 -
828 -(((
829 -(% style="color:blue" %)**Default channel:**
830 -)))
831 -
832 -(((
833 -922.1 - SF7BW125 to SF12BW125
834 -)))
835 -
836 -(((
837 -922.3 - SF7BW125 to SF12BW125
838 -)))
839 -
840 -(((
841 -922.5 - SF7BW125 to SF12BW125
842 -)))
843 -
844 -(((
845 -
846 -)))
847 -
848 -(((
849 -(% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
850 -)))
851 -
852 -(((
853 -922.1 - SF7BW125 to SF12BW125
854 -)))
855 -
856 -(((
857 -922.3 - SF7BW125 to SF12BW125
858 -)))
859 -
860 -(((
861 -922.5 - SF7BW125 to SF12BW125
862 -)))
863 -
864 -(((
865 -922.7 - SF7BW125 to SF12BW125
866 -)))
867 -
868 -(((
869 -922.9 - SF7BW125 to SF12BW125
870 -)))
871 -
872 -(((
873 -923.1 - SF7BW125 to SF12BW125
874 -)))
875 -
876 -(((
877 -923.3 - SF7BW125 to SF12BW125
878 -)))
879 -
880 -(((
881 -
882 -)))
883 -
884 -(((
885 -(% style="color:blue" %)**Downlink:**
886 -)))
887 -
888 -(((
889 -Uplink channels 1-7(RX1)
890 -)))
891 -
892 -(((
893 -921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
894 -)))
895 -
896 -
897 -
898 -=== 2.6.7  IN865-867 (IN865) ===
899 -
900 -(((
901 -(% style="color:blue" %)**Uplink:**
902 -)))
903 -
904 -(((
905 -865.0625 - SF7BW125 to SF12BW125
906 -)))
907 -
908 -(((
909 -865.4025 - SF7BW125 to SF12BW125
910 -)))
911 -
912 -(((
913 -865.9850 - SF7BW125 to SF12BW125
914 -)))
915 -
916 -(((
917 -
918 -)))
919 -
920 -(((
921 -(% style="color:blue" %)**Downlink:**
922 -)))
923 -
924 -(((
925 -Uplink channels 1-3 (RX1)
926 -)))
927 -
928 -(((
929 -866.550 - SF10BW125 (RX2)
930 -)))
931 -
932 -
933 -
934 -== 2.7  LED Indicator ==
935 -
936 -The LDDS75 has an internal LED which is to show the status of different state.
937 -
938 -
939 -* Blink once when device power on.
940 -* The device detects the sensor and flashes 5 times.
941 -* Solid ON for 5 seconds once device successful Join the network.
942 -* Blink once when device transmit a packet.
943 -
944 -== 2.8  ​Firmware Change Log ==
945 -
946 -
947 -(((
948 -**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/]]
949 -)))
950 -
951 -(((
952 -
953 -)))
954 -
955 -(((
956 -**Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
957 -)))
958 -
959 -
960 -
961 -== 2.9  Mechanical ==
962 -
963 -
964 -[[image:image-20220610172003-1.png]]
965 -
966 -
967 -[[image:image-20220610172003-2.png]]
968 -
969 -
970 -
971 -== 2.10  Battery Analysis ==
972 -
973 -=== 2.10.1  Battery Type ===
974 -
975 -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.
976 -
977 -
978 -The battery related documents as below:
979 -
980 -* (((
981 -[[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
982 -)))
983 -* (((
984 -[[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
985 -)))
986 -* (((
987 -[[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]]
988 -)))
989 -
990 - [[image:image-20220610172400-3.png]]
991 -
992 -
993 -
994 -=== 2.10.2  Replace the battery ===
995 -
996 -(((
997 -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.
998 -)))
999 -
1000 -(((
1001 -
1002 -)))
1003 -
1004 -(((
1005 -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)
1006 -)))
1007 -
1008 -
1009 -
1010 1010  = 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
1011 1011  
1012 1012  (((
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