Version 235.2 by Xiaoling on 2023/02/03 15:37
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1 (% style="text-align:center" %)
2 [[image:image-20230203113613-1.png]]
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5
6
7 **Table of Contents:**
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15
16
17 = 1.  Introduction =
18
19 == 1.1 ​ What is LMDS120 Microwave Radar DistanceSensor ==
20
21
22 (((
23 The Dragino LMDS120 is a LoRaWAN Microwave Radar distance sensor. It uses use Microwave Radar to detect the distance between sensor and different objects. Different from ultrosonic or Lidar measurement. Microwave Radar is more reliable for condensation / dusty environment. It can sense correct distance even there is water or think dust on top of the sensor.
24
25 The LMDS120 can be applied to scenarios such as horizontal distance measurement, parking management system, object proximity and presence detection, intelligent trash can management system, robot obstacle avoidance, automatic control, sewer, etc.
26
27 The LoRa wireless technology used in LMDS120 allows device to send data and reach extremely long ranges at low data-rates. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption.
28
29 LMDS120 is powered by 8500mAh Li-SOCI2 battery, it is designed for long term use up to 5 years.
30
31 Each LMDS120 is pre-load with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server and it will auto connect after power on.
32 )))
33
34
35 [[image:image-20230203114147-2.png]]
36
37
38 == ​1.2  Features ==
39
40
41 * LoRaWAN 1.0.3 Class A
42 * Ultra-low power consumption
43 * 60Ghz Microwave Radar for distance detection
44 * Monitor Battery Level
45 * Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
46 * AT Commands to change parameters
47 * Uplink on periodically
48 * Downlink to change configure
49 * 8500mAh Battery for long term use
50 * Wall Mountable
51 * Outdoor Use
52
53 == 1.3  Radar probe specification ==
54
55
56 * Measuring Method: FMCW
57 * Frequency: 60 GHz
58 * Measure Range : 15cm ~~ 1200cm
59 * Accuracy:± (3mm + S*02%). S: Measure Value
60 * Resolution: 0.01m
61 * Measurement Angle : 25 degrees horizontal and 23 degrees vertical
62
63 == 1.4  Storage & Operation Temperature ==
64
65
66 -15°C to +65°C
67
68
69 == 1.5 ​ Applications ==
70
71
72 * Horizontal distance measurement
73 * Liquid level measurement
74 * Parking management system
75 * Object proximity and presence detection
76 * Intelligent trash can management system
77 * Robot obstacle avoidance
78 * Automatic control
79 * Sewer
80 * Bottom water level monitoring
81
82 == 1.6  Pin mapping and power on ==
83
84
85 [[image:1655257026882-201.png]]
86
87 (% style="display:none" %) (%%)
88
89 = 2.  Operation Mode =
90
91 == 2.1  How it works ==
92
93
94 (((
95 Each LMDS120 is shipped with a worldwide unique set of OTAA keys. To use LMDS120 in a LoRaWAN network, user needs to input the OTAA keys in the LoRaWAN network server. So LMDS120 can join the LoRaWAN network and start to transmit sensor data.
96 )))
97
98
99 == 2.2  ​Example to use for LoRaWAN network ==
100
101
102 (((
103 Following is an example for how to join the [[TTN v3 LoRaWAN Network>>url:https://console.cloud.thethings.network/]]. Below is the network structure; we use the [[LG308>>url:http://www.dragino.com/products/lora/item/140-lg308.html]] as a LoRaWAN gateway in this example.
104 )))
105
106 (((
107 [[image:image-20230203115545-3.png]]
108
109 * In this user case, the LMDS120 is installed on top of river to detect the water level and send the level info to the LoRaWAN server. The LMDS120 will uplink different types of messages to the LoRaWAN server. See [[Uplink payload>>path:#Uplink_Payload]] for detail.
110 )))
111
112 (((
113 Assume the LoRaWAN Gateway DLOS8 is already set to connect to the [[TTN V3 network >>url:https://eu1.cloud.thethings.network]]. We need to add the LMDS120 device in TTN V3:
114 )))
115
116 (((
117 (((
118
119 )))
120
121 (((
122 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LMDS120.
123 )))
124 )))
125
126 (((
127 (((
128 Each LMDS120 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
129
130 [[image:1655278302970-688.png]]
131
132
133 )))
134 )))
135
136 Users can enter these keys in the LoRaWAN Server portal. Below is the TTN V3 screenshot:
137
138 __**Add APP EUI**__ in the application.
139
140
141 [[image:image-20220610161353-4.png]]
142
143
144 [[image:image-20220610161353-5.png]]
145
146
147 [[image:image-20220610161353-6.png]]
148
149
150 [[image:image-20220610161353-7.png]]
151
152
153
154 You can also choose to create the device manually.
155
156 [[image:image-20220610161538-8.png]]
157
158
159
160 **Add APP KEY and DEV EUI**
161
162 [[image:1655278497961-944.png]]
163
164
165 (% style="color:blue" %)**Step 2**(%%):  Power on LMDS120
166
167
168 Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
169
170 [[image:1655278589727-228.png]]
171
172 (((
173 Put the jumper to power on LMDS120 and it will auto-join to the TTN V3 network. After join success, it will start to upload sensor data to TTN V3 and the user can see it in the panel.
174 )))
175
176
177 == 2.3  ​Uplink Payload ==
178
179
180 Uplink payloads have two types:
181
182 * Distance Value: Use FPORT=2
183 * Other control commands: Use other FPORT fields.
184
185 The application server should parse the correct value based on FPORT settings.
186
187
188 === 2.3.1  Device Status, FPORT~=5 ===
189
190
191 (((
192 Include device configure status. Once LMDS120 Joined the network, it will uplink this message to the server.
193 )))
194
195 (((
196 Users can also use the downlink command (0x26 01) to ask LMDS120 to resend Device Status.
197 )))
198
199 (% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:510px" %)
200 |(% colspan="6" %)**Device Status (FPORT=5)**
201 |(% style="width:103px" %)**Size (bytes)**|(% style="width:72px" %)**1**|**2**|(% style="width:91px" %)**1**|(% style="width:86px" %)**1**|(% style="width:44px" %)**2**
202 |(% style="width:103px" %)**Value**|(% style="width:72px" %)Sensor Model|Firmware Version|(% style="width:91px" %)Frequency Band|(% style="width:86px" %)Sub-band|(% style="width:44px" %)BAT
203
204 [[image:image-20230203133803-4.png]]
205
206
207 * (% style="color:#037691" %)**Sensor Model**(%%)**:** For LMDS120, this value is 0x18
208
209 * (% style="color:#037691" %)**Firmware Version**(%%)**:** 0x0100, Means: v1.0.0 version
210
211 * (% style="color:#037691" %)**Frequency Band**(%%)**:**
212
213 *0x01: EU868
214
215 *0x02: US915
216
217 *0x03: IN865
218
219 *0x04: AU915
220
221 *0x05: KZ865
222
223 *0x06: RU864
224
225 *0x07: AS923
226
227 *0x08: AS923-1
228
229 *0x09: AS923-2
230
231 *0x0a: AS923-3
232
233 *0x0b: AS923-3
234
235
236
237 * (% style="color:#037691" %)**Sub-Band**(%%)**:**
238 ** AU915 and US915:value 0x00 ~~ 0x08
239 ** CN470: value 0x0B ~~ 0x0C
240 ** Other Bands: Always 0x00
241
242
243 === 2.3.2  Distance, Uplink FPORT~=2 ===
244
245
246 LMDS120 will send this uplink **after** Device Status once join the LoRaWAN network successfully. And LMDS120 will:
247
248 1. periodically send this uplink every 20 minute (TDC time), this interval [[can be changed>>||anchor="H3.1A0SetTransmitIntervalTime280x0129"]].
249 1. send this uplink while there is [[interrupt event>>||anchor="H3.5A0SetInterruptMode280x0629"]].
250
251 Uplink Payload totals 11 bytes.
252
253
254 (% border="1" cellspacing="4" style="background-color:#f7faff; width:370px" %)
255 |=(% colspan="6" style="width: 367px;" %)**Distance Value, FPORT=2**
256 |(% style="width:72px" %)**Size(bytes)**|(% style="width:43px" %)**2**|(% style="width:76px" %)**2**|(% style="width:76px" %)**1**|(% style="width:75px" %)**2**|(% style="width:75px" %)**1**
257 |(% style="width:72px" %)**Value**|(% style="width:43px" %)[[BAT>>||anchor="H2.3.1A0DeviceStatus2CFPORT3D5"]]|(% style="width:76px" %)Distance|(% style="width:76px" %)interrupt|(% style="width:75px" %)DS18B20 temperature|(% style="width:75px" %)Sensor flag
258
259 [[image:image-20230203142732-5.png]]
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261
262
263 (((
264 (% style="color:#037691" %)**Distance:**
265 )))
266
267 (((
268 Distance between sensor probe to the first object. (unit: cm)
269 )))
270
271 (((
272 For example, if the data you get from the register is __0x0D 0xC6__, the distance between the sensor and the measured object is(% style="color:#037691" %)** 0DC6(H) = 115 (D) = 115 cm.**
273 )))
274
275
276 (((
277 (% style="color:red" %)**Notice: The distance has a special value :**
278 )))
279
280 * (((
281 **0x3FFF**: Reading Invalid (exceed the valid range of the probe) or Probe not detected
282 )))
283
284 === 2.3.3  Decoder in TTN V3 ===
285
286
287 [[image:1655261164557-670.png]]
288
289 (((
290 (((
291 Please check the decoder from this link: [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
292
293
294 )))
295 )))
296
297 == 2.4  ​Show data on Datacake ==
298
299
300 (((
301 Datacake IoT platform provides a human-friendly interface to show the sensor data, once we have sensor data in TTN V3, we can use Datacake to connect to TTN V3 and see the data in Datacake. Below are the steps:
302
303
304 )))
305
306 (((
307 (% style="color:blue" %)**Step 1**(%%)**: **Link TTNv3 to [[DATACAKE>>url:https://datacake.co/]]
308 )))
309
310 (((
311 (% style="color:blue" %)**Step 2**(%%)**: **Configure LMDS120 in Datacake
312 )))
313
314
315 [[image:image-20230203150230-6.png]]
316
317
318 [[image:image-20220615163646-7.png]]
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321 [[image:image-20230203150402-8.png]]
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324 [[image:image-20220615163646-8.png]]
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326
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328 [[image:image-20230203150513-9.png]]
329
330 (% style="display:none" %) (%%)
331
332 [[image:image-20230203150531-10.png]](% style="display:none" %)
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334
335 (% style="display:none" %)
336
337 (% style="display:none" %) (%%) [[image:image-20230203150555-11.png]]
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339 (% style="display:none" %)
340
341
342
343 = 3.  Configure LMDS200 via AT Command or LoRaWAN Downlink =
344
345
346 (((
347 (((
348 Use can configure LMDS200 via AT Command or LoRaWAN Downlink.
349 )))
350 )))
351
352 * (((
353 (((
354 AT Command Connection: See [[FAQ>>||anchor="H5.A0FAQ"]].
355 )))
356 )))
357 * (((
358 (((
359 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
360 )))
361 )))
362
363 (((
364 (((
365
366 )))
367
368 (((
369 There are two kinds of commands to configure LMDS200, they are:
370 )))
371 )))
372
373 * (((
374 (((
375 (% style="color:#4f81bd" %)** General Commands**.
376 )))
377 )))
378
379 (((
380 (((
381 These commands are to configure:
382 )))
383 )))
384
385 * (((
386 (((
387 General system settings like: uplink interval.
388 )))
389 )))
390 * (((
391 (((
392 LoRaWAN protocol & radio related command.
393 )))
394 )))
395
396 (((
397 (((
398 They are same for all Dragino Device which support DLWS-005 LoRaWAN Stack**(Note~*~*)**. These commands can be found on the wiki: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
399 )))
400 )))
401
402 (((
403 (((
404
405 )))
406 )))
407
408 * (((
409 (((
410 (% style="color:#4f81bd" %)** Commands special design for LMDS200**
411 )))
412 )))
413
414 (((
415 (((
416 These commands only valid for LMDS200, as below:
417 )))
418 )))
419
420
421 == 3.1  Set Transmit Interval Time(0x01) ==
422
423
424 Feature: Change LoRaWAN End Node Transmit Interval.
425
426 (% style="color:#037691" %)**AT Command: AT+TDC**
427
428 (% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:510px" %)
429 |=(% style="width: 156px;" %)**Command Example**|=(% style="width: 137px;" %)**Function**|=**Response**
430 |(% style="width:156px" %)AT+TDC=?|(% style="width:137px" %)Show current transmit Interval|(((
431 30000
432 OK
433 the interval is 30000ms = 30s
434 )))
435 |(% style="width:156px" %)AT+TDC=60000|(% style="width:137px" %)Set Transmit Interval|(((
436 OK
437 Set transmit interval to 60000ms = 60 seconds
438 )))
439
440 (((
441 (% style="color:#037691" %)**Downlink Command: 0x01**
442 )))
443
444 Format: Command Code (0x01) followed by 3 bytes time value.
445
446 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
447
448 Example 1: Downlink Payload: 0100001E  ~/~/  Set Transmit Interval (TDC) = 30 seconds
449
450 Example 2: Downlink Payload: 0100003C  ~/~/  Set Transmit Interval (TDC) = 60 seconds
451
452
453 == 3.2  Set Interrupt Mode(0x06) ==
454
455
456 (((
457 Feature, Set Interrupt mode for GPIO_EXIT.
458 )))
459
460 (((
461 (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
462 )))
463
464 (% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:510px" %)
465 |=(% style="width: 154px;" %)**Command Example**|=(% style="width: 196px;" %)**Function**|=(% style="width: 157px;" %)**Response**
466 |(% style="width:154px" %)AT+INTMOD=?|(% style="width:196px" %)Show current interrupt mode|(% style="width:157px" %)(((
467 0
468 OK
469 the mode is 0 = No interruption
470 )))
471 |(% style="width:154px" %)AT+INTMOD=2|(% style="width:196px" %)(((
472 Set Transmit Interval
473 ~1. (Disable Interrupt),
474 2. (Trigger by rising and falling edge)
475 3. (Trigger by falling edge)
476 4. (Trigger by rising edge)
477 )))|(% style="width:157px" %)OK
478
479
480 (% style="color:#037691" %)**Downlink Command: 0x06**
481
482 Format: Command Code (0x06) followed by 3 bytes.
483
484 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
485
486 Example 1: Downlink Payload: 06000000  ~/~/ Turn off interrupt mode
487
488 Example 2: Downlink Payload: 06000003  ~/~/ Set the interrupt mode to rising edge trigger
489
490
491
492 = 4.  Battery & how to replace =
493
494 == 4.1  Battery Type ==
495
496
497 (((
498 (((
499 LMDS200 is equipped with a [[8500mAH ER26500 Li-SOCI2 battery>>url:https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]. The battery is un-rechargeable battery with low discharge rate targeting for 8~~10 years use. This type of battery is commonly used in IoT target for long-term running, such as water meter.
500 )))
501
502 (((
503 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
504
505
506 )))
507
508 [[image:image-20220615165029-16.png||height="645" width="908"]]
509
510
511 Minimum Working Voltage for the LMDS200:
512
513 LMDS200:  2.45v ~~ 3.6v
514 )))
515
516
517 == 4.2  Replace Battery ==
518
519
520 Any battery with range 2.45 ~~ 3.6v can be a replacement. We recommend to use Li-SOCl2 Battery.
521
522 And make sure the positive and negative pins match.
523
524
525 == 4.3  Power Consumption Analyze ==
526
527
528 Dragino Battery powered product are all runs in Low Power mode. We have an update battery calculator which base on the measurement of the real device. User can use this calculator to check the battery life and calculate the battery life if want to use different transmit interval.
529
530 Instruction to use as below:
531
532
533 (% style="color:blue" %)**Step 1**(%%)**: **Downlink the up-to-date DRAGINO_Battery_Life_Prediction_Table.xlsx from:
534
535 [[https:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/Battery_Analyze/>>url:https://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/Battery_Analyze/]]
536
537
538 (% style="color:blue" %)**Step 2**(%%)**:** Open it and choose
539
540 * Product Model
541 * Uplink Interval
542 * Working Mode
543
544 And the Life expectation in difference case will be shown on the right.
545
546 [[image:image-20220615165329-17.png||height="388" width="1201"]]
547
548
549 (((
550 (% id="cke_bm_628908S" style="display:none" %) (%%)The battery related documents as below:
551 )))
552
553 * (((
554 [[Battery Dimension>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/]]
555 )))
556 * (((
557 [[Lithium-Thionyl Chloride Battery  datasheet>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]](% style="display:none" %)
558 )))
559 * (((
560 [[Lithium-ion Battery-Capacitor datasheet>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]
561 )))
562
563 [[image:image-20220615111024-1.png]]
564
565
566 === 4.3.1  Battery Note ===
567
568
569 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 transmit LoRa, then the battery life may be decreased.
570
571
572 === 4.3.2  Replace the battery ===
573
574
575 (((
576 You can change the battery in the LMDS200.The type of battery is not limited as long as the output is between 3v to 3.6v. 
577 )))
578
579 (((
580 The default battery pack of LMDS200 includes a ER26500 plus super capacitor. If user can't find this pack locally, they can find ER26500 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).
581 )))
582
583
584 ~)~)~)
585
586 = 5.  FAQ =
587
588 == 5.1  How to use AT Command to configure LMDS200 ==
589
590
591 LMDS200 UART connection photo
592
593
594 [[image:image-20220615180555-3.png||height="541" width="863"]]
595
596
597 LMDS200 supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to LMDS200 to use AT command, as below.
598
599 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/test/WebHome/1654135840598-282.png?rev=1.1||alt="1654135840598-282.png"]]
600
601
602 In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LMDS200. LMDS200 will output system info once power on as below:
603
604 [[image:image-20220615180555-4.png]]
605
606
607 == 5.2  How to upgrade the firmware? ==
608
609
610 (((
611 A new firmware might be available for:
612 )))
613
614 * (((
615 Support new features
616 )))
617 * (((
618 For bug fix
619 )))
620 * (((
621 Change LoRaWAN bands.
622 )))
623
624 (((
625 Instruction for how to upgrade: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/#H2.HardwareUpgradeMethodSupportList>>http://wiki.dragino.com/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/#H2.HardwareUpgradeMethodSupportList]]
626 )))
627
628 (((
629
630 )))
631
632 (((
633 Firmware location: [[https:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LMDS200/Firmware/>>url:https://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDS03A/Firmware/]]
634 )))
635
636
637 == 5.3  How to change the LoRa Frequency Bands/Region ==
638
639
640 You can follow the instructions for [[how to upgrade image>>||anchor="H5.2A0Howtoupgradethefirmware3F"]].
641 When downloading the images, choose the required image file for download. ​
642
643
644 = 6.  Trouble Shooting =
645
646 == 6.1  AT Command input doesn't work ==
647
648
649 In the case if user can see the console output but can't type input to the device. Please check if you already include the (% style="color:green" %)**ENTER**(%%) while sending out the command. Some serial tool doesn't send (% style="color:green" %)**ENTER**(%%) while press the send key, user need to add ENTER in their string.
650
651 (((
652
653 )))
654
655 = 7.  Order Info =
656
657
658 Part Number **:** (% style="color:blue" %)**LMDS200-XX**
659
660
661 (% style="color:blue" %)**XX**(%%)**: **The default frequency band
662
663 * (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
664 * (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
665 * (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
666 * (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
667 * (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
668 * (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
669 * (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
670 * (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
671
672 = 8. ​ Packing Info =
673
674
675 (((
676 **Package Includes**:
677 )))
678
679 (((
680 LMDS200 LoRaWAN Microwave Radar Distance Sensor x 1
681
682
683 )))
684
685 = 9.  ​Support =
686
687
688 * Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
689 * Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[support@dragino.com>>url:http://../../../../../../D:%5C%E5%B8%82%E5%9C%BA%E8%B5%84%E6%96%99%5C%E8%AF%B4%E6%98%8E%E4%B9%A6%5CLoRa%5CLT%E7%B3%BB%E5%88%97%5Csupport@dragino.com]].
690
691

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