Changes for page DS20L -- LoRaWAN Smart Distance Detector User Manual 01
Last modified by Mengting Qiu on 2023/12/14 11:15
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... ... @@ -22,13 +22,13 @@ 22 22 23 23 It detects the distance(% style="color:blue" %)** between the measured object and the sensor**(%%), and uploads the value via wireless to LoRaWAN IoT Server. 24 24 25 -The LoRa wireless technology used in S W3L-LB 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.25 +The LoRa wireless technology used in DDS75-LB 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. 26 26 27 -S W3L-LB (% style="color:blue" %)**supports BLE configure**(%%) and (% style="color:blue" %)**wireless OTA update**(%%) which make user easy to use.27 +DDS75-LB (% style="color:blue" %)**supports BLE configure**(%%) and (% style="color:blue" %)**wireless OTA update**(%%) which make user easy to use. 28 28 29 -S W3L-LB is powered by (% style="color:blue" %)**8500mAh Li-SOCI2 battery**(%%), it is designed for long term use up to 5 years.29 +DDS75-LB is powered by (% style="color:blue" %)**8500mAh Li-SOCI2 battery**(%%), it is designed for long term use up to 5 years. 30 30 31 -Each S W3L-LB 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.31 +Each DDS75-LB 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 32 33 33 [[image:image-20230612170943-2.png||height="525" width="912"]] 34 34 ... ... @@ -178,8 +178,8 @@ 178 178 [[image:image-20230523174230-1.png]] 179 179 180 180 181 -== == 182 182 182 + 183 183 == 2.10 Mechanical == 184 184 185 185 ... ... @@ -268,7 +268,6 @@ 268 268 269 269 270 270 ((( 271 -((( 272 272 DDS75-LB will uplink payload via LoRaWAN with below payload format: 273 273 ))) 274 274 ... ... @@ -276,12 +276,9 @@ 276 276 Uplink payload includes in total 4 bytes. 277 277 Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance 278 278 ))) 279 -))) 280 280 281 -((( 282 - 283 -))) 284 284 280 + 285 285 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %) 286 286 |=(% style="width: 62.5px;background-color:#D9E2F3;color:#0070C0" %)((( 287 287 **Size(bytes)** ... ... @@ -423,19 +423,19 @@ 423 423 == 2.6 Datalog Feature == 424 424 425 425 426 -Datalog Feature is to ensure IoT Server can get all sampling data from Sensor even if the LoRaWAN network is down. For each sampling, S W3L-LB will store the reading for future retrieving purposes.422 +Datalog Feature is to ensure IoT Server can get all sampling data from Sensor even if the LoRaWAN network is down. For each sampling, DDS75-LB will store the reading for future retrieving purposes. 427 427 428 428 429 429 === 2.6.1 Ways to get datalog via LoRaWAN === 430 430 431 431 432 -Set PNACKMD=1, S W3L-LB will wait for ACK for every uplink, when there is no LoRaWAN network,SW3L-LB will mark these records with non-ack messages and store the sensor data, and it will send all messages (10s interval) after the network recovery.428 +Set PNACKMD=1, DDS75-LB will wait for ACK for every uplink, when there is no LoRaWAN network,DDS75-LB will mark these records with non-ack messages and store the sensor data, and it will send all messages (10s interval) after the network recovery. 433 433 434 434 * ((( 435 -a) S W3L-LB will do an ACK check for data records sending to make sure every data arrive server.431 +a) DDS75-LB will do an ACK check for data records sending to make sure every data arrive server. 436 436 ))) 437 437 * ((( 438 -b) S W3L-LB will send data in **CONFIRMED Mode** when PNACKMD=1, but SW3L-LB won't re-transmit the packet if it doesn't get ACK, it will just mark it as a NONE-ACK message. In a future uplink if SW3L-LB gets a ACK, SW3L-LB will consider there is a network connection and resend all NONE-ACK messages.434 +b) DDS75-LB will send data in **CONFIRMED Mode** when PNACKMD=1, but DDS75-LB won't re-transmit the packet if it doesn't get ACK, it will just mark it as a NONE-ACK message. In a future uplink if DDS75-LB gets a ACK, DDS75-LB will consider there is a network connection and resend all NONE-ACK messages. 439 439 ))) 440 440 441 441 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1) ... ... @@ -446,7 +446,7 @@ 446 446 === 2.6.2 Unix TimeStamp === 447 447 448 448 449 -S W3L-LB uses Unix TimeStamp format based on445 +DDS75-LB uses Unix TimeStamp format based on 450 450 451 451 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/WebHome/image-20220523001219-11.png?width=627&height=97&rev=1.1||alt="图片-20220523001219-11.png" height="97" width="627"]] 452 452 ... ... @@ -465,7 +465,7 @@ 465 465 466 466 User need to set (% style="color:blue" %)**SYNCMOD=1**(%%) to enable sync time via MAC command. 467 467 468 -Once S W3L-LB Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to SW3L-LB. If SW3L-LB fails to get the time from the server, SW3L-LB will use the internal time and wait for next time request (AT+SYNCTDC to set the time request period, default is 10 days).464 +Once DDS75-LB Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to DDS75-LB. If DDS75-LB fails to get the time from the server, DDS75-LB will use the internal time and wait for next time request (AT+SYNCTDC to set the time request period, default is 10 days). 469 469 470 470 (% style="color:red" %)**Note: LoRaWAN Server need to support LoRaWAN v1.0.3(MAC v1.0.3) or higher to support this MAC command feature, Chirpstack,TTN V3 v3 and loriot support but TTN V3 v2 doesn't support. If server doesn't support this command, it will through away uplink packet with this command, so user will lose the packet with time request for TTN V3 v2 if SYNCMOD=1.** 471 471 ... ... @@ -493,7 +493,7 @@ 493 493 ))) 494 494 495 495 ((( 496 -Uplink Internal =5s,means S W3L-LB will send one packet every 5s. range 5~~255s.492 +Uplink Internal =5s,means DDS75-LB will send one packet every 5s. range 5~~255s. 497 497 ))) 498 498 499 499 ... ... @@ -500,17 +500,17 @@ 500 500 == 2.7 Frequency Plans == 501 501 502 502 503 -The S W3L-LB uses OTAA mode and below frequency plans by default. If user want to use it with different frequency plan, please refer the AT command sets.499 +The DDS75-LB uses OTAA mode and below frequency plans by default. If user want to use it with different frequency plan, please refer the AT command sets. 504 504 505 505 [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/]] 506 506 507 507 508 -= 3. Configure S W3L-LB =504 += 3. Configure DDS75-LB = 509 509 510 510 == 3.1 Configure Methods == 511 511 512 512 513 -S W3L-LB supports below configure method:509 +DDS75-LB supports below configure method: 514 514 515 515 * AT Command via Bluetooth Connection (**Recommended**): [[BLE Configure Instruction>>http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]]. 516 516 ... ... @@ -532,10 +532,10 @@ 532 532 [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/]] 533 533 534 534 535 -== 3.3 Commands special design for S W3L-LB ==531 +== 3.3 Commands special design for DDS75-LB == 536 536 537 537 538 -These commands only valid for S W3L-LB, as below:534 +These commands only valid for DDS75-LB, as below: 539 539 540 540 541 541 === 3.3.1 Set Transmit Interval Time === ... ... @@ -580,166 +580,9 @@ 580 580 Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds 581 581 ))) 582 582 583 -=== 3.3.2 QuitAT Command ===579 +=== 3.3.2 Set Interrupt Mode === 584 584 585 585 586 -Feature: Quit AT Command mode, so user needs to input the password again before using AT Commands. 587 - 588 -(% style="color:blue" %)**AT Command: AT+DISAT** 589 - 590 -(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:452px" %) 591 -|=(% style="width: 155px;background-color:#D9E2F3;color:#0070C0" %)**Command Example**|=(% style="width: 198px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 99px;background-color:#D9E2F3;color:#0070C0" %)**Response** 592 -|(% style="width:155px" %)AT+DISAT|(% style="width:198px" %)Quit AT Commands mode|(% style="width:96px" %)OK 593 - 594 -(% style="color:blue" %)**Downlink Command:** 595 - 596 -No downlink command for this feature. 597 - 598 - 599 -=== 3.3.3 Get Device Status === 600 - 601 - 602 -Send a LoRaWAN downlink to ask device send Alarm settings. 603 - 604 -(% style="color:blue" %)**Downlink Payload: **(%%)0x26 01 605 - 606 -Sensor will upload Device Status via FPORT=5. See payload section for detail. 607 - 608 - 609 -=== 3.3.4 Alarm for continuously water flow === 610 - 611 - 612 -((( 613 -This feature is to monitor and send Alarm for continuously water flow. 614 -))) 615 - 616 -((( 617 -Example case is for Toilet water monitoring, if some one push toilet button, the toilet will have water flow. If the toilet button has broken and can't returned to original state, the water flow will keep for hours or days which cause huge waste for water. 618 -))) 619 - 620 -((( 621 -To monitor this faulty and send alarm, there are two settings: 622 -))) 623 - 624 -* ((( 625 -(% style="color:#4f81bd" %)**Stop Duration: Unit: Second** 626 -))) 627 - 628 -((( 629 -Default: 15s, If SW3L-LB didn't see any water flow in 15s, SW3L-LB will consider stop of water flow event. 630 -))) 631 - 632 -* ((( 633 -(% style="color:#4f81bd" %)**Alarm Timer: Units: Minute; Default 0 minutes (means Alarm disable)** 634 -))) 635 - 636 -((( 637 -**Example:** 3 minutes, if SW3L-LB detect a start of water flow event and didn't detect a stop event within Alarm timer, SW3L-LB will send an Alarm to indicate a water flow abnormal alarm. 638 -))) 639 - 640 -((( 641 -So for example, If we set stop duration=15s and Alarm Timer=3minutes. If the toilet water flow continuously for more than 3 minutes, Sensor will send an alarm (in Confirmed MODE) to platform. 642 -))) 643 - 644 -((( 645 -(% style="color:red" %)**Note:** **After this alarm is send, sensor will consider a stop of water flow and count for another new event. So if water flow waste last for 1 hour, Sensor will keep sending alarm every 3 minutes.** 646 -))) 647 - 648 -((( 649 -(% style="color:#4f81bd" %)**AT Command**(%%) to configure: 650 -))) 651 - 652 -* ((( 653 -AT+PTRIG=15,3 ~-~-> Set Stop duration: 15s, Alarm Timer: 3 minutes. 654 -))) 655 - 656 -* ((( 657 -AT+ PTRIG=15,0 ~-~-> Default Value, disable water waste Alarm. 658 -))) 659 - 660 -((( 661 -(% style="color:#4f81bd" %)**Downlink Command**(%%) to configure: 662 -))) 663 - 664 -((( 665 -Command: **0xAA aa bb cc** 666 -))) 667 - 668 -((( 669 -AA: Command Type Code 670 -))) 671 - 672 -((( 673 -aa: Stop duration 674 -))) 675 - 676 -((( 677 -bb cc: Alarm Timer 678 -))) 679 - 680 -((( 681 -If user send 0xAA 0F 00 03: equal to AT+PTRIG=15,3 682 -))) 683 - 684 - 685 -=== 3.3.5 Clear Flash Record === 686 - 687 - 688 -Feature: Clear flash storage for data log feature. 689 - 690 -(% style="color:blue" %)**AT Command: AT+CLRDTA** 691 - 692 -(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:500px" %) 693 -|=(% style="width: 157px;background-color:#D9E2F3;color:#0070C0" %)**Command Example**|=(% style="width: 169px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 174px;background-color:#D9E2F3;color:#0070C0" %)**Response** 694 -|(% style="width:157px" %)AT+CLRDTA|(% style="width:169px" %)Clear flash storage for data log feature.|Clear all stored sensor data… OK 695 - 696 -((( 697 -(% style="color:blue" %)**Downlink Command:** 698 -))) 699 - 700 -((( 701 -* **Example**: 0xA301 ~/~/ Same as AT+CLRDTA 702 -))) 703 - 704 - 705 - 706 -=== 3.3.6 Set the calculate flag === 707 - 708 - 709 -Feature: Set the calculate flag 710 - 711 -(% style="color:blue" %)**AT Command: AT+CALCFLAG** 712 - 713 -(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:461px" %) 714 -|=(% style="width: 158px;background-color:#D9E2F3;color:#0070C0" %)**Command Example**|=(% style="width: 193px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 110px;background-color:#D9E2F3;color:#0070C0" %)**Response** 715 -|(% style="width:158px" %)AT+CALCFLAG =1|(% style="width:192px" %)Set the calculate flag to 1.|(% style="width:109px" %)OK 716 -|(% style="width:158px" %)AT+CALCFLAG =2|(% style="width:192px" %)Set the calculate flag to 2.|(% style="width:109px" %)OK 717 - 718 -(% style="color:blue" %)**Downlink Command:** 719 - 720 -* **Example**: 0XA501 ~/~/ Same as AT+CALCFLAG =1 721 - 722 -=== 3.3.7 Set count number === 723 - 724 - 725 -Feature: Manually set the count number 726 - 727 -(% style="color:blue" %)**AT Command: AT+SETCNT** 728 - 729 -(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:479px" %) 730 -|=(% style="width: 160px;background-color:#D9E2F3;color:#0070C0" %)**Command Example**|=(% style="width: 223px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 96px;background-color:#D9E2F3;color:#0070C0" %)**Response** 731 -|(% style="width:160px" %)AT+ SETCNT =0|(% style="width:221px" %)Set the count number to 0.|(% style="width:95px" %)OK 732 -|(% style="width:160px" %)AT+ SETCNT =100|(% style="width:221px" %)Set the count number to 100.|(% style="width:95px" %)OK 733 - 734 -(% style="color:blue" %)**Downlink Command:** 735 - 736 -* **Example**: 0xA6000001 ~/~/ Same as AT+ SETCNT =1 737 - 738 -* **Example**: 0xA6000064 ~/~/ Same as AT+ SETCNT =100 739 - 740 -=== 3.3.8 Set Interrupt Mode === 741 - 742 - 743 743 Feature, Set Interrupt mode for PA8 of pin. 744 744 745 745 When AT+INTMOD=0 is set, PA8 is used as a digital input port. ... ... @@ -771,29 +771,10 @@ 771 771 772 772 * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger 773 773 774 -=== 3.3.9 Set work mode === 775 - 776 - 777 -Feature: Manually set the work mode 778 - 779 - 780 -(% style="color:blue" %)**AT Command: AT+MOD** 781 - 782 -(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:463px" %) 783 -|=(% style="width: 162px;background-color:#D9E2F3;color:#0070C0" %)**Command Example**|=(% style="width: 193px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 108px;background-color:#D9E2F3;color:#0070C0" %)**Response** 784 -|(% style="width:162px" %)AT+MOD=0|(% style="width:191px" %)Set the work mode to 0.|(% style="width:106px" %)OK 785 -|(% style="width:162px" %)AT+MOD=1|(% style="width:191px" %)Set the work mode to 1|(% style="width:106px" %)OK 786 - 787 -(% style="color:blue" %)**Downlink Command:** 788 - 789 -* **Example: **0x0A00 ~/~/ Same as AT+MOD=0 790 - 791 -* **Example:** 0x0A01 ~/~/ Same as AT+MOD=1 792 - 793 793 = 4. Battery & Power Consumption = 794 794 795 795 796 -S W3L-LB use ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.616 +DDS75-LB use ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace. 797 797 798 798 [[**Battery Info & Power Consumption Analyze**>>http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] . 799 799 ... ... @@ -802,7 +802,7 @@ 802 802 803 803 804 804 (% class="wikigeneratedid" %) 805 -User can change firmware S W3L-LB to:625 +User can change firmware DDS75-LB to: 806 806 807 807 * Change Frequency band/ region. 808 808 ... ... @@ -810,7 +810,7 @@ 810 810 811 811 * Fix bugs. 812 812 813 -Firmware and changelog can be downloaded from : **[[Firmware download link>>url:https://www.dropbox.com/sh/ kwqv57tp6pejias/AAAopYMATh1GM6fZ-VRCLrpDa?dl=0]]**633 +Firmware and changelog can be downloaded from : **[[Firmware download link>>url:https://www.dropbox.com/sh/7la95mae0fn03xe/AACtzs-32m22TLb75B-iIr-Qa?dl=0]]** 814 814 815 815 Methods to Update Firmware: 816 816 ... ... @@ -820,19 +820,71 @@ 820 820 821 821 = 6. FAQ = 822 822 823 -== 6.1 AT Commands input doesn't work == 824 824 644 +== 6.1 What is the frequency plan for DDS75-LB? == 825 825 826 -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. 827 827 647 +DDS75-LB use the same frequency as other Dragino products. User can see the detail from this link: [[Introduction>>doc:Main.End Device Frequency Band.WebHome||anchor="H1.Introduction"]] 828 828 829 -= 7. Order Info = 830 830 650 +== 6.2 Can I use DDS75-LB in condensation environment? == 831 831 832 -Part Number: (% style="color:blue" %)**SW3L-LB-XXX-YYY** 833 833 834 - (%style="color:red"%)**XXX**(%%):Thedefaultfrequencyband653 +DDS75-LB is not suitable to be used in condensation environment. Condensation on the DDS75-LB probe will affect the reading and always got 0. 835 835 655 + 656 += 7. Trouble Shooting = 657 + 658 +== 7.1 Why I can't join TTN V3 in US915 / AU915 bands? == 659 + 660 + 661 +It is due to channel mapping. Please see below link: [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]] 662 + 663 + 664 +== 7.2 AT Command input doesn't work == 665 + 666 + 667 +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:blue" %)**ENTER**(%%) while sending out the command. Some serial tool doesn't send (% style="color:blue" %)**ENTER**(%%) while press the send key, user need to add ENTER in their string. 668 + 669 + 670 +== 7.3 Why does the sensor reading show 0 or "No sensor" == 671 + 672 + 673 +~1. The measurement object is very close to the sensor, but in the blind spot of the sensor. 674 + 675 +2. Sensor wiring is disconnected 676 + 677 +3. Not using the correct decoder 678 + 679 + 680 +== 5.4 Abnormal readings The gap between multiple readings is too large or the gap between the readings and the actual value is too large == 681 + 682 + 683 +1) Please check if there is something on the probe affecting its measurement (condensed water, volatile oil, etc.) 684 + 685 +2) Does it change with temperature, temperature will affect its measurement 686 + 687 +3) If abnormal data occurs, you can turn on DEBUG mode, Please use downlink or AT COMMAN to enter DEBUG mode. 688 + 689 +downlink command: (% style="color:blue" %)**F1 01**(%%), AT command: (% style="color:blue" %)**AT+DDEBUG=1** 690 + 691 +4) After entering the debug mode, it will send 20 pieces of data at a time, and you can send its uplink to us for analysis 692 + 693 +[[image:image-20230113135125-2.png||height="136" width="1057"]] 694 + 695 + 696 +Its original payload will be longer than other data. Even though it is being parsed, it can be seen that it is abnormal data. 697 + 698 +Please send the data to us for check. 699 + 700 + 701 += 8. Order Info = 702 + 703 + 704 +Part Number: (% style="color:blue" %)**DDS75-LB-XXX** 705 + 706 +(% style="color:red" %)**XXX**(%%): **The default frequency band** 707 + 836 836 * (% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band 837 837 838 838 * (% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band ... ... @@ -849,43 +849,15 @@ 849 849 850 850 * (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band 851 851 852 -((( 853 -(% style="color:blue" %)**YYY**(%%): Flow Sensor Model: 854 -))) 855 855 856 -((( 857 - **004:** DW-004 Flow Sensor: diameter: G1/2” / DN15. 450 pulse = 1 L 858 -))) 859 859 860 -((( 861 - **006:** DW-006 Flow Sensor: diameter: G3/4” / DN20. 390 pulse = 1 L 862 -))) 863 863 864 -((( 865 - **010:** DW-010 Flow Sensor: diameter: G 1” / DN25. 64 pulse = 1 L 866 -))) 727 += 9. Packing Info = 867 867 868 -* ((( 869 -calculate flag=0: for SW3L-004 Flow Sensor: 450 pulse = 1 L 870 -))) 871 871 872 -* ((( 873 -calculate flag=1: for SW3L-006 Flow Sensor: 390 pulse = 1 L 874 -))) 875 - 876 -* ((( 877 -calculate flag=2: for SW3L-010 Flow Sensor: 64 pulse = 1 L 878 - 879 - 880 - 881 -))) 882 - 883 -= 8. Packing Info = 884 - 885 - 886 886 (% style="color:#037691" %)**Package Includes**: 887 887 888 -* S W3L-LB LoRaWANFlowSensor732 +* DDS75-LB LoRaWAN Distance Detection Sensor x 1 889 889 890 890 (% style="color:#037691" %)**Dimension and weight**: 891 891 ... ... @@ -897,9 +897,12 @@ 897 897 898 898 * Weight / pcs : g 899 899 900 -= 9. Support = 901 901 902 902 746 + 747 += 10. Support = 748 + 749 + 903 903 * 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. 904 904 905 905 * 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.cc>>mailto:Support@dragino.cc]].