Changes for page NLMS01-NB-IoT Leaf Moisture Sensor User Manual

Last modified by Mengting Qiu on 2024/04/02 16:54

From version < 33.3 >

edited by Xiaoling
on 2022/09/13 09:23

To version < 38.6 >

edited by Xiaoling
on 2022/10/25 16:22

Change comment: There is no comment for this version

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@@ -13,14 +13,20 @@
  == 1.1  What is NLMS01 Leaf Moisture Sensor ==
++(((
  The Dragino NLMS01 is a (% style="color:blue" %)**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.
++)))
++(((
  NLMS01 detects leaf's(% style="color:blue" %)** 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.
++)))
++(((
  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.
  \\NLMS01 supports different uplink methods include (% style="color:blue" %)**TCP,MQTT,UDP and CoAP  **(%%)for different application requirement.
  \\NLMS01 is powered by  (% style="color:blue" %)**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).
  \\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 (% style="color:blue" %)**NB-IoT SIM card**(%%) from local operator and install NLMS01 to get NB-IoT network connection.
++)))
  [[image:image-20220907171221-2.png]]
@@ -50,7 +50,6 @@
  (((
--
  )))
@@ -193,8 +193,6 @@
  * (% style="color:#037691" %)**AT+SERVADDR=120.24.4.116,5683   ** (%%)  ~/~/   to set CoAP server address and port
  * (% style="color:#037691" %)**AT+URI=5,11,"mqtt",11,"coap",12,"0",15,"c=text1",23,"0" **   (%%)    ~/~/   Set COAP resource path
--
--
  For parameter description, please refer to AT command set
  [[image:image-20220907171221-9.png]]
@@ -212,11 +212,9 @@
  This feature is supported since firmware version v1.0.1
  * (% style="color:#037691" %)**AT+PRO=2   **     (%%)   ~/~/  Set to use UDP protocol to uplink
--* (% style="color:#037691" %)**AT+SERVADDR=120.24.4.116,5601     ** (%%)  ~/~/  to set UDP server address and port
++* (% style="color:#037691" %)**AT+SERVADDR=120.24.4.116,5601     ** (%%)  ~/~/  to set UDP server address and port
  * (% style="color:#037691" %)**AT+CFM=1       ** (%%)   ~/~/  If the server does not respond, this command is unnecessary
--
--
   [[image:image-20220907171221-11.png]]
@@ -238,8 +238,6 @@
  * (% style="color:#037691" %)**AT+PUBTOPIC=PUB                    **            (%%) ~/~/  Set the sending topic of MQTT
  * (% style="color:#037691" %)**AT+SUBTOPIC=SUB          **     (%%)                  ~/~/  Set the subscription topic of MQTT
--
--
   [[image:image-20220907171221-13.png]]
@@ -260,8 +260,6 @@
  * (% style="color:#037691" %)**AT+PRO=4   **             (%%)                              ~/~/  Set to use TCP protocol to uplink
  * (% style="color:#037691" %)**AT+SERVADDR=120.24.4.116,5600   ** (%%) ~/~/   to set TCP server address and port
--
--
   [[image:image-20220907171221-15.png]]
@@ -278,8 +278,6 @@
  * (% style="color:#037691" %)**AT+TDC=7200      ** (%%) ~/~/ Set Update Interval to 7200s (2 hour)
--
--
  (% style="color:red" %)**NOTE: By default, the device will send an uplink message every 2 hour. Each Uplink Include 8 set of records in this 2 hour (15 minute interval / record).**
@@ -292,11 +292,10 @@
  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.
--(% border="1" style="background-color:#ffffcc; color:green; width:1251px" %)
--|(% style="width:96px" %)**Size(bytes)**|(% style="width:82px" %)**8**|(% style="width:42px" %)**2**|(% style="width:48px" %)**2**|(% style="width:124px" %)1|(% style="width:58px" %)1|(% style="width:82px" %)1|(% style="width:113px" %)2|(% style="width:134px" %)2|(% style="width:100px" %)4|(% style="width:137px" %)2|(% style="width:110px" %)2|(% style="width:122px" %)4
++(% border="1" style="background-color:#ffffcc; color:green; width:520px" %)
++|(% style="width:45px" %)**Size(bytes)**|(% style="width:45px" %)**8**|(% style="width:20px" %)**2**|(% style="width:20px" %)**2**|(% style="width:60px" %)1|(% style="width:20px" %)1|(% style="width:40px" %)1|(% style="width:40px" %)2|(% style="width:50px" %)2|(% style="width:50px" %)4|(% style="width:50px" %)2|(% style="width:40px" %)2|(% style="width:40px" %)4
  |(% style="width:96px" %)**Value**|(% style="width:82px" %)Device ID|(% style="width:42px" %)Ver|(% style="width:48px" %)BAT|(% style="width:124px" %)Signal Strength|(% style="width:58px" %)MOD|(% style="width:82px" %)Interrupt|(% style="width:113px" %)Leaf moisture|(% style="width:134px" %)Leaf Temperature|(% style="width:100px" %)Time stamp|(% style="width:137px" %)Leaf Temperature|(% style="width:110px" %)Leaf moisture|(% style="width:122px" %)Time stamp  .....
--
  If we use the MQTT client to subscribe to this MQTT topic, we can see the following information when the NLMS01 uplink data.
@@ -305,24 +305,32 @@
  The payload is ASCII string, representative same HEX:
--0x(% style="color:red" %)f868411056754138(% style="color:blue" %)0064(% style="color:green" %)0c78(% style="color:red" %)17(% style="color:blue" %)01(% style="color:green" %)00(% style="color:blue" %)**0225010b6315537b**010b0226631550fb**010e022663154d77**01110225631549f1**011502246315466b**01190223631542e5**011d022163153f62**011e022163153bde**011e022163153859**(%%)** **where:
++**0x (% style="color:red" %)__f868411056754138__  (% style="color:blue" %)__0064 __ (% style="color:green" %)__0c78__  (% style="color:#00b0f0" %)__17__  (% style="color:#7030a0" %)__01__  (% style="color:#d60093" %)__00__  (% style="color:#a14d07" %)__0225 __ (% style="color:#0020b0" %) __010b__  (% style="color:#420042" %)__6315537b__  (% style="color:#663300" %)//__010b0226631550fb__  __010e022663154d77  01110225631549f1  011502246315466b  01190223631542e5  011d022163153f62  011e022163153bde 011e022163153859__//(%%)**
--* (% style="color:red" %)Device ID: 0xf868411056754138 = f868411056754138
--* (% style="color:blue" %)Version: 0x0064=100=1.0.0
--* (% style="color:green" %)BAT: 0x0c78 = 3192 mV = 3.192V
--* (% style="color:red" %)Singal: 0x17 = 23
--* (% style="color:blue" %)Mod: 0x01 = 1
--* (% style="color:green" %)Interrupt: 0x00= 0
--* Leaf moisture: 0x0225= 549 = 54.9%
--* Leaf Temperature:0x010B =267=26.7 °C
--* Time stamp : 0x6315537b =1662342011 ([[Unix Epoch Time>>https://www.epochconverter.com/]])
--* Leaf Temperature, Leaf moisture,Time stamp : 010b0226631550fb
--* (% style="color:blue" %)8 sets of recorded data: Leaf Temperature, Leaf moisture,Time stamp : 010e022663154d77,.......
++where:
++* (% style="color:#037691" %)**Device ID:**(%%) 0xf868411056754138 = f868411056754138
++* (% style="color:#037691" %)**Version:**(%%) 0x0064=100=1.0.0
++* (% style="color:#037691" %)**BAT:**       (%%)0x0c78 = 3192 mV = 3.192V
++* (% style="color:#037691" %)**Singal:**(%%)   0x17 = 23
++* (% style="color:#037691" %)**Mod:**(%%)  0x01 = 1
++
++* (% style="color:#037691" %)**Interrupt:**(%%) 0x00= 0
++
++* (% style="color:#037691" %)**Leaf moisture:**(%%) 0x0225= 549 = 54.9%
++
++* (% style="color:#037691" %)**Leaf Temperature: **(%%)0x010B =267=26.7 °C
++
++* (% style="color:#037691" %)**Time stamp :**   (%%)0x6315537b =1662342011 ([[Unix Epoch Time>>https://www.epochconverter.com/]])
++
++* (% style="color:#037691" %)**Leaf Temperature, Leaf moisture,Time stamp :  **(%%)010b0226631550fb
++
++* (% style="color:#037691" %)**8 sets of recorded data: **(%%)Leaf Temperature, Leaf moisture,Time stamp : 010e022663154d77,.......
++
  == 2.4  Payload Explanation and Sensor Interface ==
@@ -331,10 +331,10 @@
  By default, the Device ID equal to the last 15 bits of IMEI.
--User can use **AT+DEUI** to set Device ID
++User can use (% style="color:#037691" %)**AT+DEUI**(%%) to set Device ID
--**Example:**
++(% style="color:blue" %)**Example**:
  AT+DEUI=868411056754138
@@ -367,8 +367,9 @@
  NB-IoT Network signal Strength.
--**Ex1: 0x1d = 29**
++(% style="color:blue" %)**Ex1: 0x1d = 29**
++
  **0**        -113dBm or less
  **1**        -111dBm
@@ -384,11 +384,11 @@
  === 2.4.5  Leaf moisture ===
--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**.
++Get the moisture of the (% style="color:#037691" %)**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.
--For example, if the data you get from the register is **__0x05 0xDC__**, the moisture content in the **Leaf** is
++For example, if the data you get from the register is (% style="color:#037691" %)**__0x05 0xDC__**(%%), the moisture content in the (% style="color:#037691" %)**Leaf**(%%) is
--**0229(H) = 549(D) /100 = 54.9.**
++(% style="color:blue" %)**0229(H) = 549(D) /100 = 54.9.**
@@ -395,13 +395,13 @@
  === 2.4.6  Leaf Temperature ===
--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
++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 (% style="color:#037691" %)**__0x09 0xEC__**(%%), the temperature content in the (% style="color:#037691" %)**Leaf **(%%)is
--**Example**:
++(% style="color:blue" %)**Example**:
--If payload is 0105H: ((0x0105 & 0x8000)>>15 === 0),temp = 0105(H)/10 = 26.1 °C
++If payload is **0105H**: ((0x0105 & 0x8000)>>15 === 0),temp = 0105(H)/10 = 26.1 °C
--If payload is FF7EH: ((FF7E & 0x8000)>>15 ===1),temp = (FF7E(H)-FFFF(H))/10 = -12.9 °C
++If payload is **FF7EH**: ((FF7E & 0x8000)>>15 ===1),temp = (FF7E(H)-FFFF(H))/10 = -12.9 °C
@@ -413,14 +413,15 @@
  Convert Unix timestamp to time 2022-9-5 9:40:11.
++
  === 2.4.8  Digital Interrupt ===
--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.
++Digital Interrupt refers to pin (% style="color:#037691" %)**GPIO_EXTI**(%%), and there are different trigger methods. When there is a trigger, the NLMS01 will send a packet to the server.
  The command is:
--**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]])**.**
++(% 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]])**.**
  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.
@@ -439,7 +439,7 @@
  The 5V output time can be controlled by AT Command.
--**AT+5VT=1000**
++(% style="color:blue" %)**AT+5VT=1000**
  Means set 5V valid time to have 1000ms. So the real 5V output will actually have 1000ms + sampling time for other sensors.** **
@@ -453,10 +453,11 @@
  [[image:image-20220907171221-18.png]]
--**Examples:**
++(% style="color:blue" %)**Examples:**
--* **Set TDC**
++* (% style="color:#037691" %)**Set TDC**
++
  If the payload=0100003C, it means set the END Node's TDC to 0x00003C=60(S), while type code is 01.
  Payload:    01 00 00 1E    TDC=30S
@@ -463,12 +463,16 @@
  Payload:    01 00 00 3C    TDC=60S
--* **Reset**
++
++* (% style="color:#037691" %)**Reset**
++
  If payload = 0x04FF, it will reset the NLMS01
--* **INTMOD**
++
++* (% style="color:#037691" %)**INTMOD**
++
  Downlink Payload: 06000003, Set AT+INTMOD=3
@@ -483,9 +483,6 @@
  * After NLMS01 join NB-IoT network. The LED will be ON for 3 seconds.
  * For each uplink probe, LED will be on for 500ms.
--
--
--
  == 2.7  Installation ==
@@ -499,9 +499,9 @@
  == 2.8  Moisture and Temperature alarm function ==
--**➢ AT Command:**
++(% style="color:blue" %)**➢ AT Command:**
--**AT+ HUMALARM =min,max**
++(% style="color:#037691" %)**AT+ HUMALARM =min,max**
  ² When min=0, and max≠0, Alarm higher than max
@@ -510,7 +510,7 @@
  ² When min≠0 and max≠0, Alarm higher than max or lower than min
--**Example:**
++(% style="color:blue" %)**Example:**
  AT+ HUMALARM =50,60 ~/~/ Alarm when moisture lower than 50.
@@ -523,7 +523,7 @@
  ² When min≠0 and max≠0, Alarm higher than max or lower than min
--**Example:**
++(% style="color:blue" %)**Example:**
  AT+ TEMPALARM=20,30 ~/~/ Alarm when temperature lower than 20.
@@ -532,24 +532,24 @@
  == 2.9  Set the number of data to be uploaded and the recording time ==
--**➢ AT Command:**
++(% style="color:blue" %)**➢ AT Command:**
--**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)
++* (% 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)
++* (% 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.
--**AT+NOUD=8**  ~/~/  The device uploads 8 sets of recorded data by default. Up to 32 sets of record data can be uploaded.
++ The diagram below explains the relationship between TR, NOUD, and TDC more clearly**:**
++[[image:image-20221009001002-1.png||height="706" width="982"]]
  == 2.10  Read or Clear cached data ==
--**➢ AT Command:**
++(% style="color:blue" %)**➢ AT Command:**
--**AT+CDP**         ~/~/  Read cached data
++* (% style="color:#037691" %)**AT+CDP**      (%%)   ~/~/  Read cached data
++* (% style="color:#037691" %)**AT+CDP=0  ** (%%) ~/~/  Clear cached data
--**AT+CDP=0  **  ~/~/  Clear cached data
--
--
  [[image:image-20220907171221-20.png]]
@@ -557,9 +557,9 @@
  == 2.11  Firmware Change Log ==
--Download URL & Firmware Change log: [[https:~~/~~/www.dropbox.com/sh/1zmcakvbkf24f8x/AACmq2dZ3iRB9F1nVWeEB9Moa?dl=0>>url:https://www.dropbox.com/sh/1zmcakvbkf24f8x/AACmq2dZ3iRB9F1nVWeEB9Moa?dl=0]]
++Download URL & Firmware Change log: [[https:~~/~~/www.dropbox.com/sh/qdc3js2iu1vlipx/AACMHI3CvVb8g7YQMrIHY673a?dl=0>>https://www.dropbox.com/sh/qdc3js2iu1vlipx/AACMHI3CvVb8g7YQMrIHY673a?dl=0]]
--Upgrade Instruction: [[Upgrade Firmware>>path:#H5.1200BHowtoUpgradeFirmware]]
++Upgrade Instruction: [[Upgrade Firmware>>||anchor="H5.1200BHowtoUpgradeFirmware"]]
@@ -590,9 +590,9 @@
  Instruction to use as below:
--**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/]]
++(% style="color:blue" %)**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/]]
--**Step 2: ** Open it and choose
++(% style="color:blue" %)**Step 2: **(%%) Open it and choose
  * Product Model
  * Uplink Interval
@@ -637,86 +637,86 @@
  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]]
--AT+<CMD>?                    : Help on <CMD>
++AT+<CMD>?    :  Help on <CMD>
--AT+<CMD>                      : Run <CMD>
++AT+<CMD>   :    Run <CMD>
--AT+<CMD>=<value>      : Set the value
++AT+<CMD>=<value>:  Set the value
--AT+<CMD>=?                  : Get the value
++AT+<CMD>=?     :        Get the value
--**General Commands**
++(% style="color:#037691" %)**General Commands**
--AT                            : Attention
++AT    :     Attention
--AT?                           : Short Help
++AT?   :    Short Help
--ATZ                          : MCU Reset
++ATZ    :   MCU Reset
--AT+TDC                   : Application Data Transmission Interval
++AT+TDC   :  Application Data Transmission Interval
--AT+CFG                   : Print all configurations
++AT+CFG   :  Print all configurations
--AT+CFGMOD           : Working mode selection
++AT+CFGMOD  :   Working mode selection
--AT+INTMOD            : Set the trigger interrupt mode
++AT+INTMOD  :    Set the trigger interrupt mode
--AT+5VT                     : Set extend the time of 5V power
++AT+5VT  :   Set extend the time of 5V power
--AT+PRO                    : Choose agreement
++AT+PRO :   Choose agreement
--AT+RXDL                   : Extend the sending and receiving time
++AT+RXDL:   Extend the sending and receiving time
--AT+SERVADDR          : Server Address
++AT+SERVADDR :   Server Address
--AT+APN            : Get or set the APN
++AT+APN :         Get or set the APN
--AT+FBAND          : Get or Set whether to automatically modify the frequency band
++AT+FBAND :    Get or Set whether to automatically modify the frequency band
--AT+DNSCFG         :  Get or Set DNS Server
++AT+DNSCFG :  Get or Set DNS Server
  AT+GETSENSORVALUE   : Returns the current sensor measurement
--AT+TR      : Get or Set record time"
++AT+TR :             Get or Set record time"
--AT+NOUD      : Get or Set the number of data to be uploaded
++AT+NOUD :      Get or Set the number of data to be uploaded
--AT+CDP     : Read or Clear cached data
++AT+CDP :          Read or Clear cached data
--AT+TEMPALARM      : Get or Set alarm of temp
++AT+TEMPALARM :  Get or Set alarm of temp
--AT+HUMALARM     : Get or Set alarm of PH
++AT+HUMALARM :  Get or Set alarm of humidity
--**COAP Management**
++(% style="color:#037691" %)**COAP Management**
--AT+URI            : Resource parameters
++AT+URI :    Resource parameters
--**UDP Management**
++(% style="color:#037691" %)**UDP Management**
--AT+CFM          : Upload confirmation mode (only valid for UDP)
++AT+CFM :  Upload confirmation mode (only valid for UDP)
--**MQTT Management**
++(% style="color:#037691" %)**MQTT Management**
--AT+CLIENT               : Get or Set MQTT client
++AT+CLIENT  :   Get or Set MQTT client
--AT+UNAME             : Get or Set MQTT Username
++AT+UNAME  : Get or Set MQTT Username
--AT+PWD                  : Get or Set MQTT password
++AT+PWD   :    Get or Set MQTT password
--AT+PUBTOPIC          : Get or Set MQTT publish topic
++AT+PUBTOPIC  :   Get or Set MQTT publish topic
--AT+SUBTOPIC          : Get or Set MQTT subscription topic
++AT+SUBTOPIC :    Get or Set MQTT subscription topic
--**Information**
++(% style="color:#037691" %)**Information**
--AT+FDR              : Factory Data Reset
++AT+FDR :          Factory Data Reset
--AT+PWORD       : Serial Access Password
++AT+PWORD :   Serial Access Password
@@ -730,10 +730,11 @@
  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]]
--**Notice, NLMS01** **and LLMS01** **share the same mother board. They use the same connection and method to update.**
++(% style="color:red" %)**Notice, NLMS01 and LLMS01 share the same mother board. They use the same connection and method to update.**
++
  = 6.  Trouble Shooting =
@@ -747,7 +747,7 @@
  == 6.2  AT Command input doesn't work ==
--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.
++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.
@@ -761,11 +761,11 @@
  = 8.  Packing Info =
--**Package Includes**:
++(% style="color:#037691" %)**Package Includes:**
  * NLMS01 NB-IoT  Leaf Moisture Sensor x 1
--**Dimension and weight**:
++(% style="color:#037691" %)**Dimension and weight**:
  * Device Size: cm
  * Device Weight: g
@@ -772,9 +772,6 @@
  * Package Size / pcs : cm
  * Weight / pcs : g
--
--
--
  = 9.  Support =

image-20221009001002-1.png

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