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1 +[[image:image-20220907171221-1.jpeg]]​
2 +
3 +
4 +
5 +**~1. Introduction**
6 +
7 +**1.1 ​What is NLMS01 **Leaf Moisture Sensor
8 +
9 +The Dragino NLMS01 is a **NB-IOT Leaf Moisture Sensor** for IoT of Agriculture. It is designed to measure the leaf moisture and temperature, so to send to the platform to analyze the leaf status such as : watering, moisturizing, dew, frozen. The probe is IP67 waterproof.
10 +
11 +NLMS01 detects leaf's** moisture and temperature **use FDR method, it senses the dielectric constant cause by liquid over the leaf surface, and cover the value to leaf moisture. The probe is design in a leaf shape to best simulate the real leaf characterizes. The probe has as density as 15 leaf vein lines per centimeter which make it can senses small drop and more accuracy.
12 +
13 +NarrowBand-Internet of Things (NB-IoT) is a standards-based low power wide area (LPWA) technology developed to enable a wide range of new IoT devices and services. NB-IoT significantly improves the power consumption of user devices, system capacity and spectrum efficiency, especially in deep coverage.
14 +\\NLMS01 supports different uplink methods include **TCP,MQTT,UDP and CoAP  **for different application requirement.
15 +\\NLMS01 is powered by  **8500mAh Li-SOCI2 battery**, It is designed for long term use up to 5 years. (Actually Battery life depends on the use environment, update period & uplink method)
16 +\\To use NLMS01, user needs to check if there is NB-IoT coverage in local area and with the bands NLMS01 supports. If the local operate support it, user needs to get a **NB-IoT SIM card** from local operator and install NLMS01 to get NB-IoT network connection
17 +
18 +​[[image:image-20220907171221-2.png]]
19 +
20 +​ [[image:image-20220907171221-3.png]]
21 +
22 +**​1.2 Features**
23 +
24 +* NB-IoT Bands: B1/B3/B8/B5/B20/B28 @H-FDD
25 +* Monitor Leaf moisture
26 +
27 +* Monitor Leaf temperature
28 +
29 +* Moisture and Temperature alarm function
30 +* Monitor Battery Level
31 +* Uplink on periodically
32 +* Downlink to change configure
33 +* IP66 Waterproof Enclosure
34 +* IP67 rate for the Sensor Probe
35 +* Ultra-Low Power consumption
36 +* AT Commands to change parameters
37 +* Micro SIM card slot for NB-IoT SIM
38 +* 8500mAh Battery for long term use
39 +
40 +**1.3  Specification**
41 +
42 +**Common DC Characteristics:**
43 +
44 +* Supply Voltage: 2.1v ~~ 3.6v
45 +* Operating Temperature: -40 ~~ 85°C
46 +
47 +**NB-IoT Spec:**
48 +
49 +* - B1 @H-FDD: 2100MHz
50 +* - B3 @H-FDD: 1800MHz
51 +* - B8 @H-FDD: 900MHz
52 +* - B5 @H-FDD: 850MHz
53 +* - B20 @H-FDD: 800MHz
54 +* - B28 @H-FDD: 700MHz
55 +
56 +**1.4 Probe Specification**
57 +
58 +
59 +**Leaf Moisture: percentage of water drop over total leaf surface**
60 +
61 +* Range 0-100%
62 +* Resolution: 0.1%
63 +* Accuracy: ±3%（0-50%）；±6%（>50%）
64 +* IP67 Protection
65 +* Length: 3.5 meters
66 +
67 +**Leaf Temperature:**
68 +
69 +* Range -50℃～80℃
70 +* Resolution: 0.1℃
71 +* Accuracy: <±0.5℃(-10℃～70℃)，<±1.0℃ (others)
72 +* IP67 Protection
73 +* Length: 3.5 meters
74 +
75 +**~ 1.5 ​Applications**
76 +
77 +* Smart Agriculture
78 +
79 +**1.6 Pin mapping and power on**
80 +
81 +​[[image:image-20220907171221-4.png]]
82 +
83 +**~ **
84 +
85 +**2.  Use NLMS01 to communicate with IoT Server**
86 +
87 +**2.1  How it works**
88 +
89 +The NLMS01 is equipped with a NB-IoT module, the pre-loaded firmware in NLMS01 will get environment data from sensors and send the value to local NB-IoT network via the NB-IoT module.  The NB-IoT network will forward this value to IoT server via the protocol defined by NLMS01.
90 +
91 +The diagram below shows the working flow in default firmware of NLMS01:
92 +
93 +[[image:image-20220907171221-5.png]]
94 +
95 +**2.2 ​ Configure the NLMS01**
96 +
97 +**2.2.1 Test Requirement**
98 +
99 +To use NLMS01 in your city, make sure meet below requirements:
100 +
101 +* Your local operator has already distributed a NB-IoT Network there.
102 +* The local NB-IoT network used the band that NLMS01 supports.
103 +* Your operator is able to distribute the data received in their NB-IoT network to your IoT server.
104 +
105 +Below figure shows our testing structure. Here we have NB-IoT network coverage by China Mobile, the band they use is B8.  The NLMS01 will use CoAP(120.24.4.116:5683) or raw UDP(120.24.4.116:5601) or MQTT(120.24.4.116:1883)or TCP(120.24.4.116:5600)protocol to send data to the test server
106 +
107 +[[image:image-20220907171221-6.png]] ​
108 +
109 +**2.2.2 Insert SIM card**
110 +
111 +Insert the NB-IoT Card get from your provider.
112 +
113 +User need to take out the NB-IoT module and insert the SIM card like below:
114 +
115 +[[image:image-20220907171221-7.png]] ​
116 +
117 +**2.2.3 Connect USB – TTL to NLMS01 to configure it**
118 +
119 +User need to configure NLMS01 via serial port to set the **Server Address** / **Uplink Topic** to define where and how-to uplink packets. NLMS01 support AT Commands, user can use a USB to TTL adapter to connect to NLMS01 and use AT Commands to configure it, as below.
120 +
121 +**Connection:**
122 +
123 + USB TTL GND <~-~-~-~-> GND
124 +
125 + USB TTL TXD <~-~-~-~-> UART_RXD
126 +
127 + USB TTL RXD <~-~-~-~-> UART_TXD
128 +
129 +In the PC, use below serial tool settings:
130 +
131 +* Baud:  **9600**
132 +* Data bits:** 8**
133 +* Stop bits: **1**
134 +* Parity:  **None**
135 +* Flow Control: **None**
136 +
137 +Make sure the switch is in FLASH position, then power on device by connecting the jumper on NLMS01. NLMS01 will output system info once power on as below, we can enter the **password: 12345678** to access AT Command input.
138 +
139 +​[[image:image-20220907171221-8.png]]
140 +
141 +**Note: the valid AT Commands can be found at:  **[[**https:~~/~~/www.dropbox.com/sh/351dwor6joz8nwh/AADn1BQaAAxLF_QMyU8NkW47a?dl=0**>>url:https://www.dropbox.com/sh/351dwor6joz8nwh/AADn1BQaAAxLF_QMyU8NkW47a?dl=0]]
142 +
143 +**2.2.4 Use CoAP protocol to uplink data**
144 +
145 +**Note: if you don't have CoAP server, you can refer this link to set up one: **[[**http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Set%20up%20CoAP%20Server/**>>url:http://wiki.dragino.com/xwiki/bin/view/Main/Set%20up%20CoAP%20Server/]]
146 +
147 +**Use below commands:**
148 +
149 +* **AT+PRO=1**   ~/~/ Set to use CoAP protocol to uplink
150 +* **AT+SERVADDR=120.24.4.116,5683   ** ~/~/ to set CoAP server address and port
151 +* **AT+URI=5,11,"mqtt",11,"coap",12,"0",15,"c=text1",23,"0" ** ~/~/Set COAP resource path
152 +
153 +For parameter description, please refer to AT command set
154 +
155 +[[image:image-20220907171221-9.png]]
156 +
157 +After configure the server address and **reset the device** (via AT+ATZ ), NLMS01 will start to uplink sensor values to CoAP server.
158 +
159 +[[image:image-20220907171221-10.png]] ​
160 +
161 +**2.2.5 Use UDP protocol to uplink data(Default protocol)**
162 +
163 +This feature is supported since firmware version v1.0.1
164 +
165 +* **AT+PRO=2   ** ~/~/ Set to use UDP protocol to uplink
166 +* **AT+SERVADDR=120.24.4.116,5601   ** ~/~/ to set UDP server address and port
167 +* **AT+CFM=1       ** ~/~/If the server does not respond, this command is unnecessary
168 +
169 +​ [[image:image-20220907171221-11.png]]
170 +
171 +[[image:image-20220907171221-12.png]]
172 +
173 +​
174 +
175 +**2.2.6 Use MQTT protocol to uplink data**
176 +
177 +This feature is supported since firmware version v110
178 +
179 +* **AT+PRO=3   ** ~/~/Set to use MQTT protocol to uplink
180 +* **AT+SERVADDR=120.24.4.116,1883   ** ~/~/Set MQTT server address and port
181 +* **AT+CLIENT=CLIENT       ** ~/~/Set up the CLIENT of MQTT
182 +* **AT+UNAME=UNAME                               **~/~/Set the username of MQTT
183 +* **AT+PWD=PWD                                        **~/~/Set the password of MQTT
184 +* **AT+PUBTOPIC=NSE01_PUB                    **~/~/Set the sending topic of MQTT
185 +* **AT+SUBTOPIC=NSE01_SUB          ** ~/~/Set the subscription topic of MQTT
186 +
187 +​ [[image:image-20220907171221-13.png]]
188 +
189 +[[image:image-20220907171221-14.png]]
190 +
191 +​
192 +
193 +MQTT protocol has a much higher power consumption compare vs UDP / CoAP protocol. Please check the power analyze document and adjust the uplink period to a suitable interval.
194 +
195 +**2.2.7 Use TCP protocol to uplink data**
196 +
197 +This feature is supported since firmware version v110
198 +
199 +* **AT+PRO=4   ** ~/~/ Set to use TCP protocol to uplink
200 +* **AT+SERVADDR=120.24.4.116,5600   ** ~/~/ to set TCP server address and port
201 +
202 +​ [[image:image-20220907171221-15.png]]
203 +
204 +[[image:image-20220907171221-16.png]]
205 +
206 +​
207 +
208 +**2.2.8 Change Update Interval**
209 +
210 +User can use below command to change the **uplink interval**.
211 +
212 +* **AT+TDC=600      ** ~/~/ Set Update Interval to 600s
213 +
214 +**NOTE:**
215 +
216 +**~1. By default, the device will send an uplink message every 2 hour.**
217 +
218 +**2.3  Uplink Payload**
219 +
220 +In this mode, uplink payload includes 87 bytes in total by default.
221 +
222 +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.
223 +
224 +|**Size(bytes)**|**8**|**2**|**2**|**1**|**1**|1|2|2|2|4   
225 +|**Value**|Device ID|Ver|BAT|Signal Strength|MOD|Interrupt|Leaf moisture|Leaf Temperature|Soil PH|Time stamp  .....
226 +
227 +If we use the MQTT client to subscribe to this MQTT topic, we can see the following information when the NLMS01 uplink data.
228 +
229 +[[image:image-20220907171221-17.png]]
230 +
231 +The payload is ASCII string, representative same HEX:
232 +
233 +0xf86841105675413800640c781701000225010b6315537b010b0226631550fb010e022663154d7701110225631549f1011502246315466b01190223631542e5011d022163153f62011e022163153bde011e022163153859 where:
234 +
235 +* Device ID: 0xf868411056754138 = f868411056754138
236 +* Version: 0x0064=100=1.0.0
237 +
238 +* BAT: 0x0c78 = 3192 mV = 3.192V
239 +* Singal: 0x17 = 23
240 +* Mod: 0x01 = 1
241 +* Interrupt: 0x00= 0
242 +* Leaf moisture: 0x0225= 549 = 54.9%
243 +* Leaf Temperature:0x010B =267=26.7 °C
244 +* Time stamp : 0x6315537b =1662342011
245 +* Leaf Temperature, Leaf moisture,Time stamp : 010b0226631550fb
246 +* 8 sets of recorded data: Leaf Temperature, Leaf moisture,Time stamp : 010e022663154d77,.......
247 +
248 +**2.4  Payload Explanation and Sensor Interface**
249 +
250 +**2.4.1  Device ID**
251 +
252 +By default, the Device ID equal to the last 15 bits of IMEI.
253 +
254 +User can use **AT+DEUI** to set Device ID
255 +
256 +**Example:**
257 +
258 +AT+DEUI=868411056754138
259 +
260 +The Device ID is stored in a none-erase area, Upgrade the firmware or run AT+FDR won't erase Device ID.
261 +
262 +**2.4.2  Version Info**
263 +
264 +Specify the software version: 0x64=100, means firmware version 1.00.
265 +
266 +For example: 0x00 64 : this device is NLMS01 with firmware version 1.0.0.
267 +
268 +**2.4.3  Battery Info**
269 +
270 +Check the battery voltage for NLMS01.
271 +
272 +Ex1: 0x0B45 = 2885mV
273 +
274 +Ex2: 0x0B49 = 2889mV
275 +
276 +**2.4.4  Signal Strength**
277 +
278 +NB-IoT Network signal Strength.
279 +
280 +**Ex1: 0x1d = 29**
281 +
282 +**0**  -113dBm or less
283 +
284 +**1**  -111dBm
285 +
286 +**2...30** -109dBm... -53dBm
287 +
288 +**31**   -51dBm or greater
289 +
290 +**99**    Not known or not detectable
291 +
292 +**2.4.5  Leaf** moisture
293 +
294 +Get the moisture of the **Leaf**. The value range of the register is 300-1000(Decimal), divide this value by 100 to get the percentage of moisture in the **Leaf**.
295 +
296 +For example, if the data you get from the register is **__0x05 0xDC__**, the moisture content in the **Leaf** is
297 +
298 +**0229(H) = 549(D) /100 = 54.9.**
299 +
300 +**2.4.6  Leaf Temperature**
301 +
302 +Get the temperature in the **Leaf**. The value range of the register is -4000 - +800(Decimal), divide this value by 100 to get the temperature in the **Leaf**. For example, if the data you get from the register is **__0x09 0xEC__**, the temperature content in the **Leaf **is
303 +
304 +**Example**:
305 +
306 +If payload is 0105H: ((0x0105 & 0x8000)>>15 === 0),temp = 0105(H)/10 = 26.1 °C
307 +
308 +If payload is FF7EH: ((FF7E & 0x8000)>>15 ===1),temp = (FF7E(H)-FFFF(H))/10 = -12.9 °C
309 +
310 +**2.4.7  Timestamp**
311 +
312 +Time stamp : 0x6315537b =1662342011
313 +
314 +Convert Unix timestamp to time 2022-9-5 9:40:11.
315 +
316 +**2.4.8  Digital Interrupt**
317 +
318 +Digital Interrupt refers to pin **GPIO_EXTI**, and there are different trigger methods. When there is a trigger, the NLMS01 will send a packet to the server.
319 +
320 +The command is:
321 +
322 +**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]])**.**
323 +
324 +The lower four bits of this data field shows if this packet is generated by interrupt or not. Click here for the hardware and software set up.
325 +
326 +Example:
327 +
328 +0x(00): Normal uplink packet.
329 +
330 +0x(01): Interrupt Uplink Packet.
331 +
332 +**2.4.9  ​+5V Output**
333 +
334 +NLMS01 will enable +5V output before all sampling and disable the +5v after all sampling. 
335 +
336 +The 5V output time can be controlled by AT Command.
337 +
338 +**AT+5VT=1000**
339 +
340 +Means set 5V valid time to have 1000ms. So the real 5V output will actually have 1000ms + sampling time for other sensors.** **
341 +
342 +
343 +**2.5  Downlink Payload**
344 +
345 +By default, NLMS01 prints the downlink payload to console port.
346 +
347 +[[image:image-20220907171221-18.png]] ​
348 +
349 +**Examples:**
350 +
351 +* **Set TDC**
352 +
353 +If the payload=0100003C, it means set the END Node's TDC to 0x00003C=60(S), while type code is 01.
354 +
355 +Payload:    01 00 00 1E    TDC=30S
356 +
357 +Payload:    01 00 00 3C    TDC=60S
358 +
359 +* **Reset**
360 +
361 +If payload = 0x04FF, it will reset the NLMS01
362 +
363 +* **INTMOD**
364 +
365 +Downlink Payload: 06000003, Set AT+INTMOD=3
366 +
367 +**2.6  ​LED Indicator**
368 +
369 +The NLMS01 has an internal LED which is to show the status of different state.
370 +
371 +* When power on, NLMS01 will detect if sensor probe is connected, if probe detected, LED will blink four times. (no blinks in this step is no probe)
372 +* Then the LED will be on for 1 second means device is boot normally.
373 +* After NLMS01 join NB-IoT network. The LED will be ON for 3 seconds.
374 +* For each uplink probe, LED will be on for 500ms.
375 +
376 +**2.7 Installation**
377 +
378 +NLMS01 probe has two sides. The side without words are the sense side. Please be ware when install the sensor.
379 +
380 +[[image:image-20220907171221-19.png]]
381 +
382 +**2.8 Moisture and Temperature alarm function**
383 +
384 +➢ AT Command:
385 +
386 +AT+ HUMALARM =min,max
387 +
388 +² When min=0, and max≠0, Alarm higher than max
389 +
390 +² When min≠0, and max=0, Alarm lower than min
391 +
392 +² When min≠0 and max≠0, Alarm higher than max or lower than min
393 +
394 +Example:
395 +
396 +AT+ HUMALARM =50,60 ~/~/ Alarm when moisture lower than 50.
397 +
398 +AT+ TEMPALARM=min,max
399 +
400 +² When min=0, and max≠0, Alarm higher than max
401 +
402 +² When min≠0, and max=0, Alarm lower than min
403 +
404 +² When min≠0 and max≠0, Alarm higher than max or lower than min
405 +
406 +Example:
407 +
408 +AT+ TEMPALARM=20,30 ~/~/ Alarm when temperature lower than 20.
409 +
410 +
411 +**2.9 Set the number of data to be uploaded and the recording time**
412 +
413 +➢ AT Command:
414 +
415 +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)
416 +
417 +
418 +AT+NOUD=8  ~/~/The device uploads 8 sets of recorded data by default. Up to 32 sets of record data can be uploaded.
419 +
420 +**2.10 Read or Clear cached data**
421 +
422 +➢ AT Command:
423 +
424 +AT+CDP    ~/~/ Read cached data
425 +
426 +[[image:image-20220907171221-20.png]]
427 +
428 +
429 +AT+CDP=0    ~/~/ Clear cached data
430 +
431 +
432 +**2.8  ​Firmware Change Log**
433 +
434 +Download URL & Firmware Change log: [[https:~~/~~/www.dropbox.com/sh/1zmcakvbkf24f8x/AACmq2dZ3iRB9F1nVWeEB9Moa?dl=0>>url:https://www.dropbox.com/sh/1zmcakvbkf24f8x/AACmq2dZ3iRB9F1nVWeEB9Moa?dl=0]]
435 +
436 +Upgrade Instruction: [[Upgrade Firmware>>path:#H5.1200BHowtoUpgradeFirmware]]
437 +
438 +**2.9  ​Battery Analysis**
439 +
440 +**2.9.1  ​Battery Type**
441 +
442 +The NLMS01 battery is a combination of an 8500mAh Li/SOCI2 Battery and a Super Capacitor. The battery is none-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.
443 +
444 +The battery is designed to last for several years depends on the actually use environment and update interval. 
445 +
446 +The battery related documents as below:
447 +
448 +* [[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]
449 +* [[Lithium-Thionyl Chloride Battery datasheet>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]
450 +* [[Lithium-ion Battery-Capacitor datasheet>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]
451 +
452 +[[image:image-20220907171221-21.png]] ​
453 +
454 +**2.9.2  Power consumption Analyze**
455 +
456 +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.
457 +
458 +Instruction to use as below:
459 +
460 +**Step 1:  **Downlink the up-to-date DRAGINO_Battery_Life_Prediction_Table.xlsx from: [[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/]]
461 +
462 +**Step 2: ** Open it and choose
463 +
464 +* Product Model
465 +* Uplink Interval
466 +* Working Mode
467 +
468 +And the Life expectation in difference case will be shown on the right.
469 +
470 +[[image:image-20220907171221-22.jpeg]] ​
471 +
472 +**2.9.3  ​Battery Note**
473 +
474 +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.
475 +
476 +**2.9.4  Replace the battery**
477 +
478 +The default battery pack of NLMS01 includes a ER26500 plus super capacitor. If user can't find this pack locally, they can find ER26500 or equivalence without the SPC1520 capacitor, which will also work in most case. The SPC can enlarge the battery life for high frequency use (update period below 5 minutes).
479 +
480 +**3. ​ Access NB-IoT Module**
481 +
482 +Users can directly access the AT command set of the NB-IoT module.
483 +
484 +The AT Command set can refer the BC35-G NB-IoT Module AT Command: [[https:~~/~~/www.dragino.com/downloads/index.php?dir=datasheet/other_vendors/BC35-G/>>url:https://www.dragino.com/downloads/index.php?dir=datasheet/other_vendors/BC35-G/]] 
485 +
486 +[[image:image-20220907171221-23.png]] ​
487 +
488 +**4.  Using the AT Commands**
489 +
490 +**4.1  Access AT Commands**
491 +
492 +See this link for detail:  [[https:~~/~~/www.dropbox.com/sh/351dwor6joz8nwh/AADn1BQaAAxLF_QMyU8NkW47a?dl=0>>url:https://www.dropbox.com/sh/351dwor6joz8nwh/AADn1BQaAAxLF_QMyU8NkW47a?dl=0]]
493 +
494 +AT+<CMD>?  : Help on <CMD>
495 +
496 +AT+<CMD>         : Run <CMD>
497 +
498 +AT+<CMD>=<value> : Set the value
499 +
500 +AT+<CMD>=?  : Get the value
501 +
502 +**General Commands**      
503 +
504 +AT  : Attention       
505 +
506 +AT?  : Short Help     
507 +
508 +ATZ  : MCU Reset    
509 +
510 +AT+TDC  : Application Data Transmission Interval
511 +
512 +AT+CFG  : Print all configurations
513 +
514 +AT+CFGMOD           : Working mode selection
515 +
516 +AT+INTMOD            : Set the trigger interrupt mode
517 +
518 +AT+5VT  : Set extend the time of 5V power  
519 +
520 +AT+PRO  : Choose agreement
521 +
522 +AT+RXDL  : Extend the sending and receiving time
523 +
524 +AT+SERVADDR  : Server Address
525 +
526 +AT+TR      : Get or Set record time"
527 +
528 +
529 +AT+NOUD      : Get or Set the number of data to be uploaded
530 +
531 +
532 +AT+CDP     : Read or Clear cached data
533 +
534 +
535 +AT+TEMPALARM      : Get or Set alarm of temp
536 +
537 +AT+HUMALARM     : Get or Set alarm of PH
538 +
539 +
540 +**COAP Management**      
541 +
542 +AT+URI            : Resource parameters
543 +
544 +**UDP Management**
545 +
546 +AT+CFM          : Upload confirmation mode (only valid for UDP)
547 +
548 +**MQTT Management**
549 +
550 +AT+CLIENT               : Get or Set MQTT client
551 +
552 +AT+UNAME  : Get or Set MQTT Username
553 +
554 +AT+PWD                  : Get or Set MQTT password
555 +
556 +AT+PUBTOPIC  : Get or Set MQTT publish topic
557 +
558 +AT+SUBTOPIC  : Get or Set MQTT subscription topic
559 +
560 +**Information**          
561 +
562 +AT+FDR  : Factory Data Reset
563 +
564 +AT+PWORD  : Serial Access Password
565 +
566 +**​5.  FAQ**
567 +
568 +**5.1 ​ How to Upgrade Firmware**
569 +
570 +User can upgrade the firmware for 1) bug fix, 2) new feature release.
571 +
572 +Please see this link for how to upgrade:  [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/#H2.HardwareUpgradeMethodSupportList>>url:http://wiki.dragino.com/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/#H2.HardwareUpgradeMethodSupportList]]
573 +
574 +**Notice, **NLMS01 **and **NLMS01 **share the same mother board. They use the same connection and method to update.**
575 +
576 +**6.  Trouble Shooting**
577 +
578 +**6.1  ​Connection problem when uploading firmware**
579 +
580 +**Please see: **[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/#H3.3Troubleshooting>>url:http://wiki.dragino.com/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/#H3.3Troubleshooting]]
581 +
582 +**6.2  AT Command input doesn't work**
583 +
584 +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 **ENTER** while sending out the command. Some serial tool doesn't send **ENTER** while press the send key, user need to add ENTER in their string.
585 +
586 +**7. ​ Order Info**
587 +
588 +Part Number**:** NLMS01
589 +
590 +**8.  Packing Info**
591 +
592 +**Package Includes**:
593 +
594 +* NLMS01 NB-IoT Leaf Moisture Sensor x 1
595 +
596 +**Dimension and weight**:
597 +
598 +* Device Size: cm
599 +* Device Weight: g
600 +* Package Size / pcs : cm
601 +* Weight / pcs : g
602 +
603 +
604 +**9.  Support**
605 +
606 +* 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.
607 +* 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]]
608 +
609 +​
610 +
611 +
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