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Last modified by Mengting Qiu on 2025/08/06 17:02
From version 156.1
edited by Xiaoling
on 2022/06/15 09:09
Change comment: Uploaded new attachment "image-20220615090910-1.png", version {1}
To version 173.5
edited by Xiaoling
on 2022/06/15 10:15
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -100,70 +100,128 @@
100 100  * IP66 Waterproof Enclosure
101 101  * 8500mAh Battery for long term use
102 102  
103 +== 1.3  Suitable Container & Liquid ==
103 103  
105 +* Solid Wall container such as: steel, iron, glass, ceramics, non-foaming plastics etc.
106 +* Container shape is regular, and surface is smooth.
107 +* Container Thickness:
108 +** Pure metal material.  2~~8mm, best is 3~~5mm
109 +** Pure non metal material: <10 mm
110 +* Pure liquid without irregular deposition.
104 104  
105 -== 1.3  Specification ==
112 +== 1.4  Mechanical ==
106 106  
107 -=== 1.3.1  Rated environmental conditions ===
114 +[[image:image-20220615090910-1.png]]
108 108  
109 -[[image:image-20220610154839-1.png]]
110 110  
111 -(((
112 -**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);       **
117 +[[image:image-20220615090910-2.png]]
113 113  
114 -**~ b. When the ambient temperature is 40-50 ℃, the highest humidity is the highest humidity in the natural world at the current temperature (no condensation)**
115 -)))
116 116  
117 117  
121 +== 1.5  Install LDDS20 ==
118 118  
119 -=== 1.3.2  Effective measurement range Reference beam pattern ===
120 120  
121 -**(1) The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**
124 +(% style="color:blue" %)**Step 1**(%%):  Choose the installation point.
122 122  
126 +LDDS20 (% style="color:red" %)**MUST**(%%) be installed on the container bottom middle position.
123 123  
128 +[[image:image-20220615091045-3.png]]
124 124  
125 -[[image:1654852253176-749.png]]
126 126  
127 127  
132 +(% style="color:blue" %)**Step 2**(%%):  Polish the installation point.
128 128  
129 -(((
130 -**(2)** **The object to be tested is a "corrugated cardboard box" perpendicular to the central axis of 0 °, and the length * width is 60cm * 50cm.**
131 -)))
134 +For Metal Surface with paint, it is important to polish the surface, first use crude sand paper to polish the paint level , then use exquisite sand paper to polish the metal level to make it shine & smooth.
132 132  
136 +[[image:image-20220615092010-11.png]]
133 133  
134 -[[image:1654852175653-550.png]](% style="display:none" %) ** **
135 135  
139 +No polish needed if the container is shine metal surface without paint or non-metal container.
136 136  
141 +[[image:image-20220615092044-12.png]]
137 137  
138 -== 1.5 ​ Applications ==
139 139  
140 -* Horizontal distance measurement
141 -* Liquid level measurement
142 -* Parking management system
143 -* Object proximity and presence detection
144 -* Intelligent trash can management system
145 -* Robot obstacle avoidance
146 -* Automatic control
147 -* Sewer
148 -* Bottom water level monitoring
149 149  
150 -== 1.6  Pin mapping and power on ==
145 +(% style="color:blue" %)**Step3:   **(%%)Test the installation point.
151 151  
147 +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.
152 152  
153 -[[image:1654847583902-256.png]]
154 154  
150 +It is necessary to put the coupling paste between the sensor and the container, otherwise LDDS20 won’t detect the liquid level.
155 155  
152 +[[image:1655256160324-178.png]][[image:image-20220615092327-13.png]]
156 156  
157 -= 2.  Configure LDDS75 to connect to LoRaWAN network =
158 158  
155 +After paste the LDDS20 well, power on LDDS20. In the first 30 seconds of booting, device will check the sensors status and BLUE LED will show the status as below. After 30 seconds, BLUE LED will be off to save battery life.
156 +
157 +
158 +(% style="color:red" %)**LED Status:**
159 +
160 +* Onboard LED: When power on device, the onboard LED will fast blink 4 times which means detect the sensor well.
161 +
162 +* (% style="color:blue" %)BLUE LED(% style="color:red" %) always ON(%%): Sensor is power on but doesn’t detect liquid. There is problem in installation point.
163 +* (% style="color:blue" %)BLUE LED(% style="color:red" %) slowly blinking(%%): Sensor detects Liquid Level, The installation point is good.
164 +
165 +LDDS20 will enter into low power mode at 30 seconds after system reset or power on, Blue LED will be off after that.
166 +
167 +
168 +(% style="color:red" %)**Note 2:**
169 +
170 +(% 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.
171 +
172 +
173 +
174 +(% style="color:blue" %)**Step4:   **(%%)Install use Epoxy ab glue.
175 +
176 +Prepare Eproxy AB glue.
177 +
178 +Put Eproxy AB glue in the sensor and press it hard on the container installation point.
179 +
180 +Reset LDDS20 and see if the BLUE LED is slowly blinking.
181 +
182 +[[image:image-20220615091045-8.png||height="226" width="380"]] [[image:image-20220615091045-9.png||height="239" width="339"]]
183 +
184 +
185 +(% style="color:red" %)**Note 1:**
186 +
187 +Eproxy AB glue needs 3~~ 5 minutes to stable attached. we can use other glue material to keep it in the position.
188 +
189 +
190 +(% style="color:red" %)**Note 2:**
191 +
192 +(% style="color:red" %)Eproxy AB glue(%%) is subjected in most shipping way. So the default package doesn’t include it and user needs to purchase locally.
193 +
194 +
195 +
196 +== 1.6 ​ Applications ==
197 +
198 +* Smart liquid control solution.
199 +* Smart liquefied gas solution.
200 +
201 +== 1.7  Precautions ==
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.
206 +
207 +== 1.8  Pin mapping and power on ==
208 +
209 +
210 +[[image:1655257026882-201.png]]
211 +
212 +
213 +
214 += 2.  Configure LDDS20 to connect to LoRaWAN network =
215 +
216 +
159 159  == 2.1  How it works ==
160 160  
161 161  (((
162 -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.
163 163  )))
164 164  
165 165  (((
166 -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.
167 167  )))
168 168  
169 169  
... ... @@ -175,7 +175,7 @@
175 175  )))
176 176  
177 177  (((
178 -[[image:1654848616367-242.png]]
236 +[[image:1655257698953-697.png]]
179 179  )))
180 180  
181 181  (((
... ... @@ -185,11 +185,11 @@
185 185  (((
186 186  
187 187  
188 -(% 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.
189 189  )))
190 190  
191 191  (((
192 -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.
193 193  )))
194 194  
195 195  [[image:image-20220607170145-1.jpeg]]
... ... @@ -219,6 +219,7 @@
219 219  [[image:image-20220610161353-7.png]]
220 220  
221 221  
280 +
222 222  You can also choose to create the device manually.
223 223  
224 224   [[image:image-20220610161538-8.png]]
... ... @@ -231,16 +231,17 @@
231 231  
232 232  
233 233  
234 -(% style="color:blue" %)**Step 2**(%%): Power on LDDS75
293 +(% style="color:blue" %)**Step 2**(%%):  Power on LDDS20
235 235  
236 236  
237 237  Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
238 238  
239 -[[image:image-20220610161724-10.png]]
298 +[[image:image-20220615095102-14.png]]
240 240  
241 241  
301 +
242 242  (((
243 -(% 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.
244 244  )))
245 245  
246 246  [[image:1654849068701-275.png]]
... ... @@ -251,12 +251,10 @@
251 251  
252 252  (((
253 253  (((
254 -LDDS75 will uplink payload via LoRaWAN with below payload format: 
255 -)))
314 +LDDS20 will uplink payload via LoRaWAN with below payload format: 
256 256  
257 -(((
258 -Uplink payload includes in total 4 bytes.
259 -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).
260 260  )))
261 261  )))
262 262  
... ... @@ -283,7 +283,7 @@
283 283  === 2.3.1  Battery Info ===
284 284  
285 285  
286 -Check the battery voltage for LDDS75.
344 +Check the battery voltage for LDDS20.
287 287  
288 288  Ex1: 0x0B45 = 2885mV
289 289  
... ... @@ -294,20 +294,19 @@
294 294  === 2.3.2  Distance ===
295 295  
296 296  (((
297 -Get the distance. Flat object range 280mm - 7500mm.
355 +Get the distance. Flat object range 20mm - 2000mm.
298 298  )))
299 299  
300 300  (((
301 -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.**
302 302  )))
303 303  
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.
304 304  
305 -* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
306 -* 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.
307 -
308 308  === 2.3.3  Interrupt Pin ===
309 309  
310 -This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H3.3A0SetInterruptMode"]] for the hardware and software set up.
367 +This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H3.2A0SetInterruptMode"]] for the hardware and software set up.
311 311  
312 312  **Example:**
313 313  
... ... @@ -353,533 +353,92 @@
353 353  The payload decoder function for TTN V3 is here:
354 354  
355 355  (((
356 -LDDS75 TTN V3 Payload Decoder: [[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDDS75/Payload_Decoder/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Payload_Decoder/]]
413 +LDDS20 TTN V3 Payload Decoder: [[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDDS20/Payload_Decoder/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Payload_Decoder/]]
357 357  )))
358 358  
359 359  
360 360  
361 -== 2.4  Uplink Interval ==
418 +== 2.4  Downlink Payload ==
362 362  
363 -The LDDS75 by default uplink the sensor data every 20 minutes. User can change this interval by AT Command or LoRaWAN Downlink Command. See this link: [[Change Uplink Interval>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H4.1ChangeUplinkInterval"]]
420 +By default, LDDS20 prints the downlink payload to console port.
364 364  
422 +[[image:image-20220615100930-15.png]]
365 365  
366 366  
367 -== 2.5  ​Show Data in DataCake IoT Server ==
425 +**Examples:**
368 368  
369 -(((
370 -[[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:
371 -)))
372 372  
373 -(((
374 -
375 -)))
428 +* (% style="color:blue" %)**Set TDC**
376 376  
377 -(((
378 -(% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
379 -)))
430 +If the payload=0100003C, it means set the END Node's TDC to 0x00003C=60(S), while type code is 01.
380 380  
381 -(((
382 -(% 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:**
383 -)))
432 +Payload:    01 00 00 1E    TDC=30S
384 384  
434 +Payload:    01 00 00 3C    TDC=60S
385 385  
386 -[[image:1654592790040-760.png]]
387 387  
437 +* (% style="color:blue" %)**Reset**
388 388  
389 -[[image:1654592800389-571.png]]
439 +If payload = 0x04FF, it will reset the LDDS20
390 390  
391 391  
392 -(% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
442 +* (% style="color:blue" %)**CFM**
393 393  
394 -(% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.**
444 +Downlink Payload: 05000001, Set AT+CFM=1 or 05000000 , set AT+CFM=0
395 395  
396 -[[image:1654851029373-510.png]]
397 397  
398 398  
399 -After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
448 +== 2.5  ​Show Data in DataCake IoT Server ==
400 400  
401 -[[image:image-20220610165129-11.png||height="595" width="1088"]]
402 -
403 -
404 -
405 -== 2.6  Frequency Plans ==
406 -
407 407  (((
408 -The LDDS75 uses OTAA mode and below frequency plans by default. If user want to use it with different frequency plan, please refer the AT command sets.
451 +[[DATACAKE>>url:https://datacake.co/]] provides a human friendly interface to show the sensor data, once we have data in TTN, we can use [[DATACAKE>>url:https://datacake.co/]] to connect to TTN and see the data in DATACAKE. Below are the steps:
409 409  )))
410 410  
411 -
412 -
413 -=== 2.6.1  EU863-870 (EU868) ===
414 -
415 415  (((
416 -(% style="color:blue" %)**Uplink:**
417 -)))
418 -
419 -(((
420 -868.1 - SF7BW125 to SF12BW125
421 -)))
422 -
423 -(((
424 -868.3 - SF7BW125 to SF12BW125 and SF7BW250
425 -)))
426 -
427 -(((
428 -868.5 - SF7BW125 to SF12BW125
429 -)))
430 -
431 -(((
432 -867.1 - SF7BW125 to SF12BW125
433 -)))
434 -
435 -(((
436 -867.3 - SF7BW125 to SF12BW125
437 -)))
438 -
439 -(((
440 -867.5 - SF7BW125 to SF12BW125
441 -)))
442 -
443 -(((
444 -867.7 - SF7BW125 to SF12BW125
445 -)))
446 -
447 -(((
448 -867.9 - SF7BW125 to SF12BW125
449 -)))
450 -
451 -(((
452 -868.8 - FSK
453 -)))
454 -
455 -(((
456 456  
457 457  )))
458 458  
459 459  (((
460 -(% style="color:blue" %)**Downlink:**
459 +(% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
461 461  )))
462 462  
463 463  (((
464 -Uplink channels 1-9 (RX1)
463 +(% style="color:blue" %)**Step 2**(%%)**: To configure the Application to forward data to DATACAKE you will need to add integration. To add the DATACAKE integration, perform the following steps:**
465 465  )))
466 466  
467 -(((
468 -869.525 - SF9BW125 (RX2 downlink only)
469 -)))
470 470  
467 +[[image:1654592790040-760.png]]
471 471  
472 472  
473 -=== 2.6.2  US902-928(US915) ===
470 +[[image:1654592800389-571.png]]
474 474  
475 -(((
476 -Used in USA, Canada and South America. Default use CHE=2
477 477  
478 -(% style="color:blue" %)**Uplink:**
473 +(% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
479 479  
480 -903.9 - SF7BW125 to SF10BW125
475 +(% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.(% style="color:red" %)(Note: LDDS20 use same payload as LDDS75)(%%)**
481 481  
482 -904.1 - SF7BW125 to SF10BW125
477 +[[image:1654851029373-510.png]]
483 483  
484 -904.3 - SF7BW125 to SF10BW125
485 485  
486 -904.5 - SF7BW125 to SF10BW125
480 +After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
487 487  
488 -904.7 - SF7BW125 to SF10BW125
482 +[[image:image-20220610165129-11.png||height="595" width="1088"]]
489 489  
490 -904.9 - SF7BW125 to SF10BW125
491 491  
492 -905.1 - SF7BW125 to SF10BW125
493 493  
494 -905.3 - SF7BW125 to SF10BW125
486 +== 2.6  LED Indicator ==
495 495  
488 +The LDDS20 has an internal LED which is to show the status of different state.
496 496  
497 -(% style="color:blue" %)**Downlink:**
498 498  
499 -923.3 - SF7BW500 to SF12BW500
500 -
501 -923.9 - SF7BW500 to SF12BW500
502 -
503 -924.5 - SF7BW500 to SF12BW500
504 -
505 -925.1 - SF7BW500 to SF12BW500
506 -
507 -925.7 - SF7BW500 to SF12BW500
508 -
509 -926.3 - SF7BW500 to SF12BW500
510 -
511 -926.9 - SF7BW500 to SF12BW500
512 -
513 -927.5 - SF7BW500 to SF12BW500
514 -
515 -923.3 - SF12BW500(RX2 downlink only)
516 -
517 -
518 -
519 -)))
520 -
521 -=== 2.6.3  CN470-510 (CN470) ===
522 -
523 -(((
524 -Used in China, Default use CHE=1
525 -)))
526 -
527 -(((
528 -(% style="color:blue" %)**Uplink:**
529 -)))
530 -
531 -(((
532 -486.3 - SF7BW125 to SF12BW125
533 -)))
534 -
535 -(((
536 -486.5 - SF7BW125 to SF12BW125
537 -)))
538 -
539 -(((
540 -486.7 - SF7BW125 to SF12BW125
541 -)))
542 -
543 -(((
544 -486.9 - SF7BW125 to SF12BW125
545 -)))
546 -
547 -(((
548 -487.1 - SF7BW125 to SF12BW125
549 -)))
550 -
551 -(((
552 -487.3 - SF7BW125 to SF12BW125
553 -)))
554 -
555 -(((
556 -487.5 - SF7BW125 to SF12BW125
557 -)))
558 -
559 -(((
560 -487.7 - SF7BW125 to SF12BW125
561 -)))
562 -
563 -(((
564 -
565 -)))
566 -
567 -(((
568 -(% style="color:blue" %)**Downlink:**
569 -)))
570 -
571 -(((
572 -506.7 - SF7BW125 to SF12BW125
573 -)))
574 -
575 -(((
576 -506.9 - SF7BW125 to SF12BW125
577 -)))
578 -
579 -(((
580 -507.1 - SF7BW125 to SF12BW125
581 -)))
582 -
583 -(((
584 -507.3 - SF7BW125 to SF12BW125
585 -)))
586 -
587 -(((
588 -507.5 - SF7BW125 to SF12BW125
589 -)))
590 -
591 -(((
592 -507.7 - SF7BW125 to SF12BW125
593 -)))
594 -
595 -(((
596 -507.9 - SF7BW125 to SF12BW125
597 -)))
598 -
599 -(((
600 -508.1 - SF7BW125 to SF12BW125
601 -)))
602 -
603 -(((
604 -505.3 - SF12BW125 (RX2 downlink only)
605 -)))
606 -
607 -
608 -
609 -=== 2.6.4  AU915-928(AU915) ===
610 -
611 -(((
612 -Default use CHE=2
613 -
614 -(% style="color:blue" %)**Uplink:**
615 -
616 -916.8 - SF7BW125 to SF12BW125
617 -
618 -917.0 - SF7BW125 to SF12BW125
619 -
620 -917.2 - SF7BW125 to SF12BW125
621 -
622 -917.4 - SF7BW125 to SF12BW125
623 -
624 -917.6 - SF7BW125 to SF12BW125
625 -
626 -917.8 - SF7BW125 to SF12BW125
627 -
628 -918.0 - SF7BW125 to SF12BW125
629 -
630 -918.2 - SF7BW125 to SF12BW125
631 -
632 -
633 -(% style="color:blue" %)**Downlink:**
634 -
635 -923.3 - SF7BW500 to SF12BW500
636 -
637 -923.9 - SF7BW500 to SF12BW500
638 -
639 -924.5 - SF7BW500 to SF12BW500
640 -
641 -925.1 - SF7BW500 to SF12BW500
642 -
643 -925.7 - SF7BW500 to SF12BW500
644 -
645 -926.3 - SF7BW500 to SF12BW500
646 -
647 -926.9 - SF7BW500 to SF12BW500
648 -
649 -927.5 - SF7BW500 to SF12BW500
650 -
651 -923.3 - SF12BW500(RX2 downlink only)
652 -
653 -
654 -
655 -)))
656 -
657 -=== 2.6.5  AS920-923 & AS923-925 (AS923) ===
658 -
659 -(((
660 -(% style="color:blue" %)**Default Uplink channel:**
661 -)))
662 -
663 -(((
664 -923.2 - SF7BW125 to SF10BW125
665 -)))
666 -
667 -(((
668 -923.4 - SF7BW125 to SF10BW125
669 -)))
670 -
671 -(((
672 -
673 -)))
674 -
675 -(((
676 -(% style="color:blue" %)**Additional Uplink Channel**:
677 -)))
678 -
679 -(((
680 -(OTAA mode, channel added by JoinAccept message)
681 -)))
682 -
683 -(((
684 -
685 -)))
686 -
687 -(((
688 -(% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
689 -)))
690 -
691 -(((
692 -922.2 - SF7BW125 to SF10BW125
693 -)))
694 -
695 -(((
696 -922.4 - SF7BW125 to SF10BW125
697 -)))
698 -
699 -(((
700 -922.6 - SF7BW125 to SF10BW125
701 -)))
702 -
703 -(((
704 -922.8 - SF7BW125 to SF10BW125
705 -)))
706 -
707 -(((
708 -923.0 - SF7BW125 to SF10BW125
709 -)))
710 -
711 -(((
712 -922.0 - SF7BW125 to SF10BW125
713 -)))
714 -
715 -(((
716 -
717 -)))
718 -
719 -(((
720 -(% style="color:blue" %)**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**:
721 -)))
722 -
723 -(((
724 -923.6 - SF7BW125 to SF10BW125
725 -)))
726 -
727 -(((
728 -923.8 - SF7BW125 to SF10BW125
729 -)))
730 -
731 -(((
732 -924.0 - SF7BW125 to SF10BW125
733 -)))
734 -
735 -(((
736 -924.2 - SF7BW125 to SF10BW125
737 -)))
738 -
739 -(((
740 -924.4 - SF7BW125 to SF10BW125
741 -)))
742 -
743 -(((
744 -924.6 - SF7BW125 to SF10BW125
745 -)))
746 -
747 -(((
748 -
749 -)))
750 -
751 -(((
752 -(% style="color:blue" %)**Downlink:**
753 -)))
754 -
755 -(((
756 -Uplink channels 1-8 (RX1)
757 -)))
758 -
759 -(((
760 -923.2 - SF10BW125 (RX2)
761 -)))
762 -
763 -
764 -
765 -=== 2.6.6  KR920-923 (KR920) ===
766 -
767 -(((
768 -(% style="color:blue" %)**Default channel:**
769 -)))
770 -
771 -(((
772 -922.1 - SF7BW125 to SF12BW125
773 -)))
774 -
775 -(((
776 -922.3 - SF7BW125 to SF12BW125
777 -)))
778 -
779 -(((
780 -922.5 - SF7BW125 to SF12BW125
781 -)))
782 -
783 -(((
784 -
785 -)))
786 -
787 -(((
788 -(% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
789 -)))
790 -
791 -(((
792 -922.1 - SF7BW125 to SF12BW125
793 -)))
794 -
795 -(((
796 -922.3 - SF7BW125 to SF12BW125
797 -)))
798 -
799 -(((
800 -922.5 - SF7BW125 to SF12BW125
801 -)))
802 -
803 -(((
804 -922.7 - SF7BW125 to SF12BW125
805 -)))
806 -
807 -(((
808 -922.9 - SF7BW125 to SF12BW125
809 -)))
810 -
811 -(((
812 -923.1 - SF7BW125 to SF12BW125
813 -)))
814 -
815 -(((
816 -923.3 - SF7BW125 to SF12BW125
817 -)))
818 -
819 -(((
820 -
821 -)))
822 -
823 -(((
824 -(% style="color:blue" %)**Downlink:**
825 -)))
826 -
827 -(((
828 -Uplink channels 1-7(RX1)
829 -)))
830 -
831 -(((
832 -921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
833 -)))
834 -
835 -
836 -
837 -=== 2.6.7  IN865-867 (IN865) ===
838 -
839 -(((
840 -(% style="color:blue" %)**Uplink:**
841 -)))
842 -
843 -(((
844 -865.0625 - SF7BW125 to SF12BW125
845 -)))
846 -
847 -(((
848 -865.4025 - SF7BW125 to SF12BW125
849 -)))
850 -
851 -(((
852 -865.9850 - SF7BW125 to SF12BW125
853 -)))
854 -
855 -(((
856 -
857 -)))
858 -
859 -(((
860 -(% style="color:blue" %)**Downlink:**
861 -)))
862 -
863 -(((
864 -Uplink channels 1-3 (RX1)
865 -)))
866 -
867 -(((
868 -866.550 - SF10BW125 (RX2)
869 -)))
870 -
871 -
872 -
873 -== 2.7  LED Indicator ==
874 -
875 -The LDDS75 has an internal LED which is to show the status of different state.
876 -
877 -
878 878  * Blink once when device power on.
879 879  * The device detects the sensor and flashes 5 times.
880 880  * Solid ON for 5 seconds once device successful Join the network.
881 -* Blink once when device transmit a packet.
882 882  
495 +Blink once when device transmit a packet.
496 +
497 +
498 +
883 883  == 2.8  ​Firmware Change Log ==
884 884  
885 885  
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