Changes for page NDDS75 -- NB-IoT Distance Detect Sensor User Manual
Last modified by Bei Jinggeng on 2024/05/31 09:53
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... ... @@ -16,7 +16,6 @@ 16 16 17 17 = 1. Introduction = 18 18 19 - 20 20 == 1.1 What is NDDS75 Distance Detection Sensor == 21 21 22 22 ((( ... ... @@ -57,7 +57,6 @@ 57 57 58 58 == 1.2 Features == 59 59 60 - 61 61 * NB-IoT Bands: B1/B3/B8/B5/B20/B28 @H-FDD 62 62 * Ultra low power consumption 63 63 * Distance Detection by Ultrasonic technology ... ... @@ -72,9 +72,9 @@ 72 72 * 8500mAh Battery for long term use 73 73 74 74 73 + 75 75 == 1.3 Specification == 76 76 77 - 78 78 (% style="color:#037691" %)**Common DC Characteristics:** 79 79 80 80 * Supply Voltage: 2.1v ~~ 3.6v ... ... @@ -103,9 +103,9 @@ 103 103 * Max transmit power: 350mA@3.3v 104 104 105 105 104 + 106 106 == 1.4 Applications == 107 107 108 - 109 109 * Smart Buildings & Home Automation 110 110 * Logistics and Supply Chain Management 111 111 * Smart Metering ... ... @@ -117,8 +117,6 @@ 117 117 118 118 119 119 120 - 121 - 122 122 == 1.5 Pin Definitions == 123 123 124 124 ... ... @@ -128,10 +128,8 @@ 128 128 129 129 = 2. Use NDDS75 to communicate with IoT Server = 130 130 131 - 132 132 == 2.1 How it works == 133 133 134 - 135 135 ((( 136 136 The NDDS75 is equipped with a NB-IoT module, the pre-loaded firmware in NDDS75 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 NDDS75. 137 137 ))) ... ... @@ -157,7 +157,6 @@ 157 157 158 158 === 2.2.1 Test Requirement === 159 159 160 - 161 161 ((( 162 162 To use NDDS75 in your city, make sure meet below requirements: 163 163 ))) ... ... @@ -167,7 +167,7 @@ 167 167 * Your operator is able to distribute the data received in their NB-IoT network to your IoT server. 168 168 169 169 ((( 170 -Below figure shows our testing structure. Here we have NB-IoT network coverage by China Mobile, the band they use is B8. The NDDS75 will use CoAP((% style="color:red" %)120.24.4.116:5683)(%%) or raw UDP((% style="color:red" %)120.24.4.116:5601)(%%) or MQTT((% style="color:red" %)120.24.4.116:1883)(%%)or TCP((% style="color:red" %)120.24.4.116:5600)(%%)protocol to send data to the test server .163 +Below figure shows our testing structure. Here we have NB-IoT network coverage by China Mobile, the band they use is B8. The NDDS75 will use CoAP((% style="color:red" %)120.24.4.116:5683)(%%) or raw UDP((% style="color:red" %)120.24.4.116:5601)(%%) or MQTT((% style="color:red" %)120.24.4.116:1883)(%%)or TCP((% style="color:red" %)120.24.4.116:5600)(%%)protocol to send data to the test server 171 171 ))) 172 172 173 173 ... ... @@ -177,7 +177,6 @@ 177 177 178 178 === 2.2.2 Insert SIM card === 179 179 180 - 181 181 ((( 182 182 Insert the NB-IoT Card get from your provider. 183 183 ))) ... ... @@ -193,7 +193,6 @@ 193 193 194 194 === 2.2.3 Connect USB – TTL to NDDS75 to configure it === 195 195 196 - 197 197 ((( 198 198 ((( 199 199 User need to configure NDDS75 via serial port to set the (% style="color:blue" %)**Server Address** / **Uplink Topic** (%%)to define where and how-to uplink packets. NDDS75 support AT Commands, user can use a USB to TTL adapter to connect to NDDS75 and use AT Commands to configure it, as below. ... ... @@ -202,7 +202,6 @@ 202 202 203 203 [[image:image-20220709092052-2.png]] 204 204 205 - 206 206 **Connection:** 207 207 208 208 (% style="background-color:yellow" %)USB TTL GND <~-~-~-~-> GND ... ... @@ -226,9 +226,8 @@ 226 226 227 227 [[image:1657329814315-101.png]] 228 228 229 - 230 230 ((( 231 -(% style="color:red" %) **Note: the valid AT Commands can be found at:**(%%)**[[https:~~/~~/www.dropbox.com/sh/aaq2xcl0bzfu0yd/AAAEAHRa7Io_465ds4Y7-F3aa?dl=0>>https://www.dropbox.com/sh/aaq2xcl0bzfu0yd/AAAEAHRa7Io_465ds4Y7-F3aa?dl=0]]**220 +(% style="color:red" %)Note: the valid AT Commands can be found at: (%%)[[https:~~/~~/www.dragino.com/downloads/index.php?dir=NB-IoT/NDDS75/>>url:https://www.dragino.com/downloads/index.php?dir=NB-IoT/NDDS75/]] 232 232 ))) 233 233 234 234 ... ... @@ -235,10 +235,9 @@ 235 235 236 236 === 2.2.4 Use CoAP protocol to uplink data === 237 237 227 +(% style="color:red" %)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/>>http://wiki.dragino.com/xwiki/bin/view/Main/Set%20up%20CoAP%20Server/]] 238 238 239 -(% style="color:red" %)**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/>>http://wiki.dragino.com/xwiki/bin/view/Main/Set%20up%20CoAP%20Server/]]** 240 240 241 - 242 242 ((( 243 243 **Use below commands:** 244 244 ))) ... ... @@ -251,25 +251,17 @@ 251 251 ))) 252 252 * ((( 253 253 (% style="color:blue" %)**AT+URI=5,11,"mqtt",11,"coap",12,"0",15,"c=text1",23,"0" ** (%%) ~/~/Set COAP resource path 254 - 255 - 256 - 257 257 ))) 258 258 259 259 ((( 260 260 For parameter description, please refer to AT command set 261 - 262 - 263 263 ))) 264 264 265 265 [[image:1657330452568-615.png]] 266 266 267 267 268 - 269 269 ((( 270 270 After configure the server address and (% style="color:green" %)**reset the device**(%%) (via AT+ATZ ), NDDS75 will start to uplink sensor values to CoAP server. 271 - 272 - 273 273 ))) 274 274 275 275 [[image:1657330472797-498.png]] ... ... @@ -328,31 +328,25 @@ 328 328 329 329 === 2.2.8 Change Update Interval === 330 330 331 - 332 332 User can use below command to change the (% style="color:green" %)**uplink interval**. 333 333 334 334 * (% 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.** 316 +(% style="color:red" %)**NOTE:** 317 +))) 338 338 339 - 319 +((( 320 +(% style="color:red" %)1. By default, the device will send an uplink message every 1 hour. 340 340 ))) 341 341 342 -(% style="color:red" %)**NOTE 2: When the firmware version is v1.3.2 and later firmware:** 343 343 344 -(% 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 - 347 - 348 348 == 2.3 Uplink Payload == 349 349 350 - 351 -=== 2.3.1 Before Firmware 1.3.2 === 352 - 353 - 354 354 In this mode, uplink payload includes in total 14 bytes 355 355 329 + 356 356 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:440px" %) 357 357 |=(% style="width: 60px;" %)((( 358 358 **Size(bytes)** ... ... @@ -366,9 +366,8 @@ 366 366 367 367 [[image:1657331036973-987.png]] 368 368 369 - 370 370 ((( 371 -The payload is **ASCII**string, representative same HEX:344 +The payload is ASCII string, representative same HEX: 372 372 ))) 373 373 374 374 ((( ... ... @@ -379,11 +379,11 @@ 379 379 Device ID: 0x724031556159 = 724031556159 380 380 ))) 381 381 * ((( 382 -Version: 355 +Version: 0x0064=100=1.0.0 383 383 ))) 384 384 385 385 * ((( 386 -BAT: 359 +BAT: 0x0c6c = 3180 mV = 3.180V 387 387 ))) 388 388 * ((( 389 389 Signal: 0x19 = 25 ... ... @@ -396,48 +396,14 @@ 396 396 397 397 398 398 399 - 400 400 401 401 ))) 402 402 403 -=== **2.3.2 Since firmware v1.3.2** === 404 - 405 - 406 -In this mode, uplink payload includes 69 bytes in total by default. 407 - 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 - 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....... 413 - 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 - 416 -[[image:image-20220908175246-1.png]] 417 - 418 - 419 -The payload is ASCII string, representative same HEX: 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: 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**//,....... 433 - 434 - 435 435 == 2.4 Payload Explanation and Sensor Interface == 436 436 437 437 438 438 === 2.4.1 Device ID === 439 439 440 - 441 441 ((( 442 442 By default, the Device ID equal to the last 6 bytes of IMEI. 443 443 ))) ... ... @@ -444,12 +444,10 @@ 444 444 445 445 ((( 446 446 User can use (% style="color:blue" %)**AT+DEUI**(%%) to set Device ID 447 - 448 - 449 449 ))) 450 450 451 451 ((( 452 - (% style="color:blue" %)**Example389 +**Example:** 453 453 ))) 454 454 455 455 ((( ... ... @@ -457,26 +457,13 @@ 457 457 ))) 458 458 459 459 ((( 460 -The Device ID is stored in a none-erase area, Upgrade the firmware or run (% style="color:blue" %)**AT+FDR**(%%)won't erase Device ID.397 +The Device ID is stored in a none-erase area, Upgrade the firmware or run **AT+FDR** won't erase Device ID. 461 461 ))) 462 462 463 463 464 -(% style="color:red" %)**NOTE: When the firmware version is v1.3.2 and later firmware:** 465 465 466 -(% style="color:red" %)**By default, the Device ID equal to the last 15 bits of IMEI.** 467 - 468 -User can use (% style="color:blue" %)**AT+DEUI**(%%) to set Device ID 469 - 470 - 471 -(% style="color:blue" %)**Example :** 472 - 473 -AT+DEUI=868411056754138 474 - 475 - 476 - 477 477 === 2.4.2 Version Info === 478 478 479 - 480 480 ((( 481 481 Specify the software version: 0x64=100, means firmware version 1.00. 482 482 ))) ... ... @@ -489,7 +489,6 @@ 489 489 490 490 === 2.4.3 Battery Info === 491 491 492 - 493 493 ((( 494 494 Ex1: 0x0B45 = 2885mV 495 495 ))) ... ... @@ -502,7 +502,6 @@ 502 502 503 503 === 2.4.4 Signal Strength === 504 504 505 - 506 506 ((( 507 507 NB-IoT Network signal Strength. 508 508 ))) ... ... @@ -535,7 +535,6 @@ 535 535 536 536 === 2.4.5 Distance === 537 537 538 - 539 539 Get the distance. Flat object range 280mm - 7500mm. 540 540 541 541 ((( ... ... @@ -558,7 +558,6 @@ 558 558 559 559 === 2.4.6 Digital Interrupt === 560 560 561 - 562 562 ((( 563 563 Digital Interrupt refers to pin (% style="color:blue" %)**GPIO_EXTI**(%%), and there are different trigger methods. When there is a trigger, the NDDS75 will send a packet to the server. 564 564 ))) ... ... @@ -593,7 +593,6 @@ 593 593 594 594 === 2.4.7 +5V Output === 595 595 596 - 597 597 ((( 598 598 NDDS75 will enable +5V output before all sampling and disable the +5v after all sampling. 599 599 ))) ... ... @@ -601,14 +601,10 @@ 601 601 602 602 ((( 603 603 The 5V output time can be controlled by AT Command. 604 - 605 - 606 606 ))) 607 607 608 608 ((( 609 609 (% style="color:blue" %)**AT+5VT=1000** 610 - 611 - 612 612 ))) 613 613 614 614 ((( ... ... @@ -619,7 +619,6 @@ 619 619 620 620 == 2.5 Downlink Payload == 621 621 622 - 623 623 By default, NDDS75 prints the downlink payload to console port. 624 624 625 625 [[image:image-20220709100028-1.png]] ... ... @@ -670,55 +670,9 @@ 670 670 671 671 672 672 673 -== 2.6 D istancealarm function(Since firmwarev1.3.2)==587 +== 2.6 LED Indicator == 674 674 675 675 676 -(% style="color:blue" %)** ➢ AT Command:** 677 - 678 -(% style="color:#037691" %)** AT+ LDDSALARM=min,max** 679 - 680 -² When min=0, and max≠0, Alarm higher than max 681 - 682 -² When min≠0, and max=0, Alarm lower than min 683 - 684 -² When min≠0 and max≠0, Alarm higher than max or lower than min 685 - 686 - 687 -(% style="color:blue" %)** Example:** 688 - 689 -**AT+ LDDSALARM=260,2000** ~/~/ Alarm when distance lower than 260. 690 - 691 - 692 - 693 -== 2.7 Set the number of data to be uploaded and the recording time == 694 - 695 - 696 -(% style="color:blue" %)** ➢ AT Command:** 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) 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. 701 - 702 - 703 - 704 -== 2.8 Read or Clear cached data == 705 - 706 - 707 -(% style="color:blue" %)** ➢ AT Command:** 708 - 709 -(% style="color:#037691" %)** AT+CDP ** (%%) ~/~/ Read cached data 710 - 711 - 712 -[[image:image-20220908175333-2.png]] 713 - 714 - 715 -(% style="color:#037691" %)** AT+CDP=0** (%%) ~/~/ Clear cached data 716 - 717 - 718 - 719 -== 2.9 LED Indicator == 720 - 721 - 722 722 The NDDS75 has an internal LED which is to show the status of different state. 723 723 724 724 ... ... @@ -733,29 +733,29 @@ 733 733 734 734 735 735 736 -== 2. 10Firmware Change Log ==604 +== 2.7 Firmware Change Log == 737 737 738 738 739 739 ((( 740 -Download URL & Firmware Change log : [[https:~~/~~/www.dropbox.com/sh/3hb94r49iszmstx/AADvSJcXxahEUfxqKWVnZx-La?dl=0>>https://www.dropbox.com/sh/3hb94r49iszmstx/AADvSJcXxahEUfxqKWVnZx-La?dl=0]]608 +Download URL & Firmware Change log 741 741 ))) 742 742 743 743 ((( 744 - 612 +[[https:~~/~~/www.dragino.com/downloads/index.php?dir=NB-IoT/NDDS75/Firmware/>>url:https://www.dragino.com/downloads/index.php?dir=NB-IoT/NDDS75/Firmware/]] 745 745 ))) 746 746 615 + 747 747 ((( 748 -Upgrade Instruction: [[Upgrade 617 +Upgrade Instruction: [[Upgrade_Firmware>>||anchor="H5.1200BHowtoUpgradeFirmware"]] 749 749 ))) 750 750 751 751 752 752 753 -== 2. 11Battery Analysis ==622 +== 2.8 Battery Analysis == 754 754 624 +=== 2.8.1 Battery Type === 755 755 756 -=== 2.11.1 Battery Type === 757 757 758 - 759 759 ((( 760 760 The NDDS75 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. 761 761 ))) ... ... @@ -778,9 +778,8 @@ 778 778 779 779 780 780 781 -=== 2. 11.2 Power consumption Analyze ===649 +=== 2.8.2 Power consumption Analyze === 782 782 783 - 784 784 ((( 785 785 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. 786 786 ))) ... ... @@ -817,9 +817,8 @@ 817 817 818 818 819 819 820 -=== 2. 11.3 Battery Note ===687 +=== 2.8.3 Battery Note === 821 821 822 - 823 823 ((( 824 824 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. 825 825 ))) ... ... @@ -826,9 +826,8 @@ 826 826 827 827 828 828 829 -=== 2. 11.4 Replace the battery ===695 +=== 2.8.4 Replace the battery === 830 830 831 - 832 832 ((( 833 833 The default battery pack of NDDS75 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). 834 834 ))) ... ... @@ -837,7 +837,6 @@ 837 837 838 838 = 3. Access NB-IoT Module = 839 839 840 - 841 841 ((( 842 842 Users can directly access the AT command set of the NB-IoT module. 843 843 ))) ... ... @@ -844,8 +844,6 @@ 844 844 845 845 ((( 846 846 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/]] 847 - 848 - 849 849 ))) 850 850 851 851 [[image:1657333200519-600.png]] ... ... @@ -854,13 +854,11 @@ 854 854 855 855 = 4. Using the AT Commands = 856 856 857 - 858 858 == 4.1 Access AT Commands == 859 859 721 +See this link for detail: [[https:~~/~~/www.dragino.com/downloads/index.php?dir=NB-IoT/NDDS75/>>url:http://www.dragino.com/downloads/index.php?dir=NB-IoT/NBSN50/]] 860 860 861 -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 - 864 864 AT+<CMD>? : Help on <CMD> 865 865 866 866 AT+<CMD> : Run <CMD> ... ... @@ -900,23 +900,7 @@ 900 900 901 901 AT+SERVADDR : Server Address 902 902 903 -AT+TR : Get or Set record time" 904 904 905 -AT+APN : Get or set the APN 906 - 907 -AT+FBAND : Get or Set whether to automatically modify the frequency band 908 - 909 -AT+DNSCFG : Get or Set DNS Server 910 - 911 -AT+GETSENSORVALUE : Returns the current sensor measurement 912 - 913 -AT+NOUD : Get or Set the number of data to be uploaded 914 - 915 -AT+CDP : Read or Clear cached data 916 - 917 -AT+LDDSALARM : Get or Set alarm of distance 918 - 919 - 920 920 (% style="color:#037691" %)**COAP Management** 921 921 922 922 AT+URI : Resource parameters ... ... @@ -950,7 +950,6 @@ 950 950 951 951 = 5. FAQ = 952 952 953 - 954 954 == 5.1 How to Upgrade Firmware == 955 955 956 956 ... ... @@ -963,7 +963,7 @@ 963 963 ))) 964 964 965 965 ((( 966 -(% style="color:red" %) **Notice, NDDS75 and LDDS75 share the same mother board. They use the same connection and method to update.**809 +(% style="color:red" %)Notice, NDDS75 and LDDS75 share the same mother board. They use the same connection and method to update. 967 967 ))) 968 968 969 969 ... ... @@ -970,7 +970,6 @@ 970 970 971 971 = 6. Trouble Shooting = 972 972 973 - 974 974 == 6.1 Connection problem when uploading firmware == 975 975 976 976 ... ... @@ -986,7 +986,6 @@ 986 986 987 987 == 6.2 AT Command input doesn't work == 988 988 989 - 990 990 ((( 991 991 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. 992 992 ... ... @@ -1019,7 +1019,6 @@ 1019 1019 ((( 1020 1020 1021 1021 1022 - 1023 1023 (% style="color:#037691" %)**Dimension and weight**: 1024 1024 1025 1025 * Device Size: 13.0 x 5 x 4.5 cm ... ... @@ -1037,6 +1037,5 @@ 1037 1037 1038 1038 = 9. Support = 1039 1039 1040 - 1041 1041 * 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. 1042 1042 * 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]]
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