Last modified by Bei Jinggeng on 2024/05/31 09:53
<
From version < 104.2 >
edited by Xiaoling
on 2022/09/09 10:26
To version < 108.8 >
edited by Xiaoling
on 2022/11/04 15:36
>
Change comment: There is no comment for this version

Summary

Details

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Content
... ... @@ -72,6 +72,7 @@
72 72  * 8500mAh Battery for long term use
73 73  
74 74  
75 +
75 75  == 1.3  Specification ==
76 76  
77 77  
... ... @@ -82,12 +82,12 @@
82 82  
83 83  (% style="color:#037691" %)**NB-IoT Spec:**
84 84  
85 -* - B1 @H-FDD: 2100MHz
86 -* - B3 @H-FDD: 1800MHz
87 -* - B8 @H-FDD: 900MHz
88 -* - B5 @H-FDD: 850MHz
89 -* - B20 @H-FDD: 800MHz
90 -* - B28 @H-FDD: 700MHz
86 +* B1 @H-FDD: 2100MHz
87 +* B3 @H-FDD: 1800MHz
88 +* B8 @H-FDD: 900MHz
89 +* B5 @H-FDD: 850MHz
90 +* B20 @H-FDD: 800MHz
91 +* B28 @H-FDD: 700MHz
91 91  
92 92  (% style="color:#037691" %)**Battery:**
93 93  
... ... @@ -103,6 +103,7 @@
103 103  * Max transmit power: 350mA@3.3v
104 104  
105 105  
107 +
106 106  == ​1.4  Applications ==
107 107  
108 108  
... ... @@ -118,7 +118,6 @@
118 118  
119 119  
120 120  
121 -
122 122  == 1.5  Pin Definitions ==
123 123  
124 124  
... ... @@ -203,13 +203,13 @@
203 203  [[image:image-20220709092052-2.png]]
204 204  
205 205  
206 -**Connection:**
207 +(% style="color:blue" %)**Connection:**
207 207  
208 - (% style="background-color:yellow" %)USB TTL GND <~-~-~-~-> GND
209 + (% style="background-color:yellow" %)**USB TTL GND <~-~-~-~-> GND**
209 209  
210 - (% style="background-color:yellow" %)USB TTL TXD <~-~-~-~-> UART_RXD
211 +**~ (% style="background-color:yellow" %)USB TTL TXD <~-~-~-~-> UART_RXD(%%)**
211 211  
212 - (% style="background-color:yellow" %)USB TTL RXD <~-~-~-~-> UART_TXD
213 +**~ (% style="background-color:yellow" %)USB TTL RXD <~-~-~-~-> UART_TXD(%%)**
213 213  
214 214  
215 215  In the PC, use below serial tool settings:
... ... @@ -247,10 +247,10 @@
247 247  (% style="color:blue" %)**AT+PRO=1**  (%%) ~/~/ Set to use CoAP protocol to uplink
248 248  )))
249 249  * (((
250 -(% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5683   ** (%%)~/~/ to set CoAP server address and port
251 +(% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5683   ** (%%)~/~/  to set CoAP server address and port
251 251  )))
252 252  * (((
253 -(% style="color:blue" %)**AT+URI=5,11,"mqtt",11,"coap",12,"0",15,"c=text1",23,"0" ** (%%) ~/~/Set COAP resource path
254 +(% style="color:blue" %)**AT+URI=5,11,"mqtt",11,"coap",12,"0",15,"c=text1",23,"0" ** (%%) ~/~/  Set COAP resource path
254 254  
255 255  
256 256  
... ... @@ -279,9 +279,9 @@
279 279  === 2.2.5 Use UDP protocol to uplink data(Default protocol) ===
280 280  
281 281  
282 -* (% style="color:blue" %)**AT+PRO=2   ** (%%) ~/~/ Set to use UDP protocol to uplink
283 -* (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5601   ** (%%) ~/~/ to set UDP server address and port
284 -* (% style="color:blue" %)**AT+CFM=1       ** (%%) ~/~/ If the server does not respond, this command is unnecessary
283 +* (% style="color:blue" %)**AT+PRO=2   ** (%%) ~/~/  Set to use UDP protocol to uplink
284 +* (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5601   ** (%%) ~/~/  to set UDP server address and port
285 +* (% style="color:blue" %)**AT+CFM=1       ** (%%) ~/~/  If the server does not respond, this command is unnecessary
285 285  
286 286  [[image:1657330501006-241.png]]
287 287  
... ... @@ -293,13 +293,13 @@
293 293  === 2.2.6 Use MQTT protocol to uplink data ===
294 294  
295 295  
296 -* (% style="color:blue" %)**AT+PRO=3   ** (%%) ~/~/Set to use MQTT protocol to uplink
297 -* (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,1883   ** (%%) ~/~/Set MQTT server address and port
298 -* (% style="color:blue" %)**AT+CLIENT=CLIENT       ** (%%)~/~/Set up the CLIENT of MQTT
299 -* (% style="color:blue" %)**AT+UNAME=UNAME                                **(%%)~/~/Set the username of MQTT
300 -* (% style="color:blue" %)**AT+PWD=PWD                                         **(%%)~/~/Set the password of MQTT
301 -* (% style="color:blue" %)**AT+PUBTOPIC=NDDS75_PUB                 **(%%)~/~/Set the sending topic of MQTT
302 -* (% style="color:blue" %)**AT+SUBTOPIC=NDDS75_SUB          **(%%) ~/~/Set the subscription topic of MQTT
297 +* (% style="color:blue" %)**AT+PRO=3   ** (%%) ~/~/  Set to use MQTT protocol to uplink
298 +* (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,1883   ** (%%) ~/~/  Set MQTT server address and port
299 +* (% style="color:blue" %)**AT+CLIENT=CLIENT       ** (%%)~/~/  Set up the CLIENT of MQTT
300 +* (% style="color:blue" %)**AT+UNAME=UNAME                                **(%%)~/~/  Set the username of MQTT
301 +* (% style="color:blue" %)**AT+PWD=PWD                                         **(%%)~/~/  Set the password of MQTT
302 +* (% style="color:blue" %)**AT+PUBTOPIC=NDDS75_PUB                 **(%%)~/~/  Set the sending topic of MQTT
303 +* (% style="color:blue" %)**AT+SUBTOPIC=NDDS75_SUB          **(%%) ~/~/  Set the subscription topic of MQTT
303 303  
304 304  [[image:1657249978444-674.png]]
305 305  
... ... @@ -316,8 +316,8 @@
316 316  === 2.2.7 Use TCP protocol to uplink data ===
317 317  
318 318  
319 -* (% style="color:blue" %)**AT+PRO=4   ** (%%) ~/~/ Set to use TCP protocol to uplink
320 -* (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5600   **(%%) ~/~/ to set TCP server address and port
320 +* (% style="color:blue" %)**AT+PRO=4   ** (%%) ~/~/  Set to use TCP protocol to uplink
321 +* (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5600   **(%%) ~/~/  to set TCP server address and port
321 321  
322 322  [[image:image-20220709093918-1.png]]
323 323  
... ... @@ -331,16 +331,19 @@
331 331  
332 332  User can use below command to change the (% style="color:green" %)**uplink interval**.
333 333  
334 -* (% style="color:blue" %)**AT+TDC=600      ** (%%)~/~/ Set Update Interval to 600s
335 +* (% style="color:blue" %)**AT+TDC=600      ** (%%)~/~/  Set Update Interval to 600s
335 335  
336 336  (((
337 -(% style="color:red" %)**NOTE 1: By default, the device will send an uplink message every 1 hour.**
338 -
339 339  
340 -)))
341 341  
342 -(% style="color:red" %)**NOTE 2: When the firmware version is v1.3.2 and later firmware:**
343 343  
341 +(% style="color:red" %)**NOTE:**
342 +
343 +(% style="color:red" %)**1. By default, the device will send an uplink message every 1 hour.**
344 +
345 +(% style="color:red" %)**2. When the firmware version is v1.3.2 and later firmware:**
346 +)))
347 +
344 344  (% style="color:red" %)**By default, the device will send an uplink message every 2 hours. Each Uplink Include 8 set of records in this 2 hour (15 minute interval / record).**
345 345  
346 346  
... ... @@ -348,7 +348,7 @@
348 348  == 2.3  Uplink Payload ==
349 349  
350 350  
351 -=== 2.3.1  Before Firmware 1.3.2 ===
355 +=== 2.3.1  Before Firmware v1.3.2 ===
352 352  
353 353  
354 354  In this mode, uplink payload includes in total 14 bytes
... ... @@ -360,7 +360,7 @@
360 360  |(% style="width:97px" %)**Value**|(% style="width:83px" %)[[Device ID>>||anchor="H2.4.1A0A0DeviceID"]]|(% style="width:41px" %)[[Ver>>||anchor="H2.4.2A0VersionInfo"]]|(% style="width:46px" %)[[BAT>>||anchor="H2.4.3A0BatteryInfo"]]|(% style="width:123px" %)[[Signal Strength>>||anchor="H2.4.4A0SignalStrength"]]|(% style="width:120px" %)[[Distance (unit: mm)>>||anchor="H2.4.5A0Distance"]]|(% style="width:80px" %)[[Interrupt>>||anchor="H2.4.6A0DigitalInterrupt"]]
361 361  
362 362  (((
363 -If we use the MQTT client to subscribe to this MQTT topic, we can see the following information when the NDDS751 uplink data.
367 +If we use the MQTT client to subscribe to this MQTT topic, we can see the following information when the NDDS75 uplink data.
364 364  )))
365 365  
366 366  
... ... @@ -367,49 +367,37 @@
367 367  [[image:1657331036973-987.png]]
368 368  
369 369  
370 -(((
374 +
371 371  The payload is **ASCII** string, representative same HEX:
372 -)))
373 373  
374 -(((
375 -0x72403155615900640c6c19029200 where:
376 -)))
377 +(% style="background-color:yellow" %)**0x 724031556159 0064 0c6c 19 0292 00 **
377 377  
378 -* (((
379 -Device ID: 0x724031556159 = 724031556159
380 -)))
381 -* (((
382 -Version:  0x0064=100=1.0.0
383 -)))
379 +**where :**
384 384  
385 -* (((
386 -BAT:  0x0c6c = 3180 mV = 3.180V
387 -)))
388 -* (((
389 -Signal: 0x19 = 25
390 -)))
391 -* (((
392 -Distance: 0x0292= 658 mm
393 -)))
394 -* (((
395 -Interrupt: 0x00 = 0
381 +* (% style="color:#037691" %)**Device ID:**(%%) 0x724031556159 = 724031556159
396 396  
383 +* (% style="color:#037691" %)**Version:**(%%)  0x0064=100=1.0.0
397 397  
385 +* (% style="color:#037691" %)**BAT:** (%%) 0x0c6c = 3180 mV = 3.180V
398 398  
387 +* (% style="color:#037691" %)**Signal:**(%%)  0x19 = 25
399 399  
400 -
401 -)))
389 +* (% style="color:#037691" %)**Distance:**  (%%)0x0292= 658 mm
402 402  
403 -=== **2.3.2  Since firmware v1.3.2** ===
391 +* (% style="color:#037691" %)**Interrupt:**(%%) 0x00 = 0
404 404  
405 405  
394 +
395 +=== 2.3.2  Since firmware v1.3.2 ===
396 +
397 +
406 406  In this mode, uplink payload includes 69 bytes in total by default.
407 407  
408 408  Each time the device uploads a data package, 8 sets of recorded data will be attached. Up to 32 sets of recorded data can be uploaded.
409 409  
410 -(% border="2" style="background-color:#ffffcc; color:green; width:896px" %)
411 -|(% style="width:95px" %)**Size(bytes)**|(% style="width:84px" %)**8**|(% style="width:44px" %)2|(% style="width:48px" %)2|(% style="width:123px" %)1|(% style="width:55px" %)1|(% style="width:80px" %)1|(% style="width:77px" %)2|(% style="width:94px" %)4|(% style="width:77px" %)2|(% style="width:116px" %)4
412 -|(% style="width:95px" %)**Value**|(% style="width:84px" %)Device ID|(% style="width:44px" %)Ver|(% style="width:48px" %)BAT|(% style="width:123px" %)Signal Strength|(% style="width:55px" %)MOD|(% style="width:80px" %)Interrupt|(% style="width:77px" %)Distance|(% style="width:94px" %)Timestamp|(% style="width:77px" %)Distance|(% style="width:116px" %)Timestamp.......
402 +(% border="1" style="background-color:#ffffcc; color:green; width:490px" %)
403 +|=(% scope="row" style="width: 60px;" %)**Size(bytes)**|(% style="width:40px" %)**8**|(% style="width:25px" %)**2**|(% style="width:25px" %)**2**|(% style="width:60px" %)**1**|(% style="width:25px" %)**1**|(% style="width:40px" %)**1**|(% style="width:40px" %)**2**|(% style="width:70px" %)**4**|(% style="width:40px" %)**2**|(% style="width:60px" %)**4**
404 +|=(% style="width: 95px;" %)**Value**|(% style="width:84px" %)Device ID|(% style="width:44px" %)Ver|(% style="width:48px" %)BAT|(% style="width:123px" %)Signal Strength|(% style="width:55px" %)MOD|(% style="width:80px" %)Interrupt|(% style="width:77px" %)Distance|(% style="width:94px" %)Timestamp|(% style="width:77px" %)Distance|(% style="width:116px" %)Timestamp.......
413 413  
414 414  If we use the MQTT client to subscribe to this MQTT topic, we can see the following information when the NDDS75 uplink data.
415 415  
... ... @@ -418,20 +418,31 @@
418 418  
419 419  The payload is ASCII string, representative same HEX:
420 420  
421 -0x(% style="color:red" %)f867787050213317(% style="color:blue" %)0084(% style="color:green" %)0cf4(% style="color:red" %)1e(% style="color:blue" %)01(% style="color:green" %)00(% style="color:red" %)**//00396319bb32//**00396319baf0//**00396319ba3c**//00396319b988//**00396319b8d4**//00396319b820//**00396319b76c**//00396319b6b8//**00396319b604**//(%%) where:
413 +**0x (% style="color:red" %)f867787050213317 (% style="color:blue" %)0084 (% style="color:green" %)0cf4 (% style="color:#00b0f0" %)1e (% style="color:#7030a0" %)01 (% style="color:#d60093" %)00(% style="color:#a14d07" %) 0039 (% style="color:#0020b0" %)6315537b (% style="color:#663300" %)00396319baf0 00396319ba3c 00396319b988 00396319b8d4 00396319b820 00396319b76c 00396319b6b8 00396319b604 (%%)**
422 422  
423 -* (% style="color:green" %)Device ID: f867787050213317 = f867787050213317
424 -* (% style="color:red" %)Version: 0x0084=132=1.3.2
425 -* (% style="color:green" %)BAT: 0x0cf4 = 3316 mV = 3.316V
426 -* (% style="color:blue" %)Singal: 0x1e = 30
427 -* (% style="color:red" %)Mod: 0x01 = 1
428 -* Interrupt: 0x00= 0
429 -* Distance: 0x0039= 57 = 57
430 -* Time stamp : 0x6315537b =1662342011  ([[Unix Epoch Time>>url:http://www.epochconverter.com/]])
431 -* Distance,Time stamp : 00396319baf0
432 -* (% style="color:red" %) 8 sets of recorded data: Distance,Time stamp : //**00396319ba3c**//,.......
415 +**where:**
433 433  
417 +* (% style="color:#037691" %)**Device ID:**(%%) f867787050213317 = f867787050213317
434 434  
419 +* (% style="color:#037691" %)**Version:**(%%) 0x0084=132=1.3.2
420 +
421 +* (% style="color:#037691" %)**BAT:**(%%)  0x0cf4 = 3316 mV = 3.316V
422 +
423 +* (% style="color:#037691" %)**Singal:**(%%)  0x1e = 30
424 +
425 +* (% style="color:#037691" %)**Mod:**(%%)**     **0x01 = 1
426 +
427 +* (% style="color:#037691" %)**Interrupt:**(%%) 0x00= 0
428 +
429 +* (% style="color:#037691" %)**Distance:**(%%) 0x0039= 57 = 57
430 +
431 +* (% style="color:#037691" %)**Time stamp:**(%%) 0x6315537b =1662342011  ([[Unix Epoch Time>>url:http://www.epochconverter.com/]])
432 +
433 +* (% style="color:#037691" %)**Distance,Time stamp:**(%%) 00396319baf0
434 +
435 +* (% style="color:#037691" %)**8 sets of recorded data: Distance,Time stamp :**(%%) //**00396319ba3c**//,.......
436 +
437 +
435 435  == 2.4  Payload Explanation and Sensor Interface ==
436 436  
437 437  
... ... @@ -568,7 +568,7 @@
568 568  )))
569 569  
570 570  (((
571 -(% style="color:blue" %)**AT+INTMOD=3 **(%%) ~/~/(more info about INMOD please refer [[**AT Command Manual**>>url:https://www.dragino.com/downloads/downloads/NB-IoT/NBSN95/DRAGINO_NBSN95-NB_AT%20Commands_v1.1.0.pdf]])**.**
574 +(% style="color:blue" %)**AT+INTMOD=3 **(%%) ~/~/  (more info about INMOD please refer [[**AT Command Manual**>>url:https://www.dragino.com/downloads/downloads/NB-IoT/NBSN95/DRAGINO_NBSN95-NB_AT%20Commands_v1.1.0.pdf]])**.**
572 572  )))
573 573  
574 574  
... ... @@ -695,27 +695,27 @@
695 695  
696 696  (% style="color:blue" %)** ➢ AT Command:**
697 697  
698 -(% style="color:#037691" %)** AT+TR=900** (%%) ~/~/ The unit is seconds, and the default is to record data once every 900 seconds.( The minimum can be set to 180 seconds)
701 +* (% style="color:#037691" %)** AT+TR=900** (%%) ~/~/ The unit is seconds, and the default is to record data once every 900 seconds.( The minimum can be set to 180 seconds)
702 +* (% style="color:#037691" %)** AT+NOUD=8**             (%%) ~/~/  The device uploads 8 sets of recorded data by default. Up to 32 sets of record data can be uploaded.
699 699  
700 -(% style="color:#037691" %)** AT+NOUD=8** (%%) ~/~/  The device uploads 8 sets of recorded data by default. Up to 32 sets of record data can be uploaded.
704 + The diagram below explains the relationship between TR, NOUD, and TDC more clearly**:**
701 701  
706 +[[image:image-20221009001114-1.png||height="687" width="955"]]
702 702  
703 703  
709 +
704 704  == 2.8  Read or Clear cached data ==
705 705  
706 706  
707 707  (% style="color:blue" %)** ➢ AT Command:**
708 708  
709 -(% style="color:#037691" %)** AT+CDP ** (%%) ~/~/ Read cached data
715 +* (% style="color:#037691" %)** AT+CDP ** (%%) ~/~/  Read cached data
716 +* (% style="color:#037691" %)** AT+CDP=0**  (%%) ~/~/  Clear cached data
710 710  
711 -
712 712  [[image:image-20220908175333-2.png]]
713 713  
714 714  
715 -(% style="color:#037691" %)** AT+CDP=0**  (%%) ~/~/ Clear cached data
716 716  
717 -
718 -
719 719  == 2.9  ​LED Indicator ==
720 720  
721 721  
... ... @@ -861,90 +861,90 @@
861 861  See this link for detail:  [[https:~~/~~/www.dropbox.com/sh/aaq2xcl0bzfu0yd/AAAEAHRa7Io_465ds4Y7-F3aa?dl=0>>https://www.dropbox.com/sh/aaq2xcl0bzfu0yd/AAAEAHRa7Io_465ds4Y7-F3aa?dl=0]]
862 862  
863 863  
864 -AT+<CMD>?  : Help on <CMD>
867 +AT+<CMD>?  :  Help on <CMD>
865 865  
866 -AT+<CMD>         : Run <CMD>
869 +AT+<CMD>         :  Run <CMD>
867 867  
868 -AT+<CMD>=<value> : Set the value
871 +AT+<CMD>=<value> :  Set the value
869 869  
870 -AT+<CMD>=?  : Get the value
873 +AT+<CMD>=?  :  Get the value
871 871  
872 872  
873 873  (% style="color:#037691" %)**General Commands**(%%)      
874 874  
875 -AT  : Attention       
878 +AT  :  Attention       
876 876  
877 -AT?  : Short Help     
880 +AT?  :  Short Help     
878 878  
879 -ATZ  : MCU Reset    
882 +ATZ  :  MCU Reset    
880 880  
881 -AT+TDC  : Application Data Transmission Interval
884 +AT+TDC  :  Application Data Transmission Interval
882 882  
883 -AT+CFG  : Print all configurations
886 +AT+CFG  :  Print all configurations
884 884  
885 -AT+CFGMOD           : Working mode selection
888 +AT+CFGMOD           :  Working mode selection
886 886  
887 -AT+INTMOD            : Set the trigger interrupt mode
890 +AT+INTMOD            :  Set the trigger interrupt mode
888 888  
889 -AT+5VT  : Set extend the time of 5V power  
892 +AT+5VT  :  Set extend the time of 5V power  
890 890  
891 -AT+PRO  : Choose agreement
894 +AT+PRO  :  Choose agreement
892 892  
893 -AT+WEIGRE  : Get weight or set weight to 0
896 +AT+WEIGRE  :  Get weight or set weight to 0
894 894  
895 -AT+WEIGAP  : Get or Set the GapValue of weight
898 +AT+WEIGAP  :  Get or Set the GapValue of weight
896 896  
897 -AT+RXDL  : Extend the sending and receiving time
900 +AT+RXDL  :  Extend the sending and receiving time
898 898  
899 -AT+CNTFAC  : Get or set counting parameters
902 +AT+CNTFAC  :  Get or set counting parameters
900 900  
901 -AT+SERVADDR  : Server Address
904 +AT+SERVADDR  :  Server Address
902 902  
903 -AT+TR      : Get or Set record time"
906 +AT+TR  :  Get or Set record time"
904 904  
905 -AT+APN     : Get or set the APN
908 +AT+APN     :  Get or set the APN
906 906  
907 -AT+FBAND   : Get or Set whether to automatically modify the frequency band
910 +AT+FBAND  :  Get or Set whether to automatically modify the frequency band
908 908  
909 -AT+DNSCFG  : Get or Set DNS Server
912 +AT+DNSCFG  : Get or Set DNS Server
910 910  
911 -AT+GETSENSORVALUE   : Returns the current sensor measurement
914 +AT+GETSENSORVALUE   :  Returns the current sensor measurement
912 912  
913 -AT+NOUD      : Get or Set the number of data to be uploaded
916 +AT+NOUD  :  Get or Set the number of data to be uploaded
914 914  
915 -AT+CDP     : Read or Clear cached data
918 +AT+CDP     :  Read or Clear cached data
916 916  
917 -AT+LDDSALARM : Get or Set alarm of distance
920 +AT+LDDSALARM :  Get or Set alarm of distance
918 918  
919 919  
920 920  (% style="color:#037691" %)**COAP Management**      
921 921  
922 -AT+URI            : Resource parameters
925 +AT+URI            :  Resource parameters
923 923  
924 924  
925 925  (% style="color:#037691" %)**UDP Management**
926 926  
927 -AT+CFM          : Upload confirmation mode (only valid for UDP)
930 +AT+CFM          :  Upload confirmation mode (only valid for UDP)
928 928  
929 929  
930 930  (% style="color:#037691" %)**MQTT Management**
931 931  
932 -AT+CLIENT               : Get or Set MQTT client
935 +AT+CLIENT  :  Get or Set MQTT client
933 933  
934 -AT+UNAME  : Get or Set MQTT Username
937 +AT+UNAME  :  Get or Set MQTT Username
935 935  
936 -AT+PWD                  : Get or Set MQTT password
939 +AT+PWD  :  Get or Set MQTT password
937 937  
938 -AT+PUBTOPIC  : Get or Set MQTT publish topic
941 +AT+PUBTOPIC  :  Get or Set MQTT publish topic
939 939  
940 -AT+SUBTOPIC  : Get or Set MQTT subscription topic
943 +AT+SUBTOPIC  :  Get or Set MQTT subscription topic
941 941  
942 942  
943 943  (% style="color:#037691" %)**Information**          
944 944  
945 -AT+FDR  : Factory Data Reset
948 +AT+FDR  :  Factory Data Reset
946 946  
947 -AT+PWORD  : Serial Access Password
950 +AT+PWORD  :  Serial Access Password
948 948  
949 949  
950 950  
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