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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... ... @@ -1,1 +1,1 @@ 1 -DDS 45-LB -- LoRaWAN Distance Detection Sensor User Manual1 +DDS75-LB -- LoRaWAN Distance Detection Sensor User Manual - Content
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... ... @@ -1,8 +1,9 @@ 1 1 (% style="text-align:center" %) 2 -[[image:image-2023061 3100900-1.png||height="683" width="683"]]2 +[[image:image-20230612170349-1.png||height="656" width="656"]] 3 3 4 4 5 5 6 + 6 6 **Table of Contents:** 7 7 8 8 {{toc/}} ... ... @@ -21,13 +21,13 @@ 21 21 22 22 It detects the distance(% style="color:blue" %)** between the measured object and the sensor**(%%), and uploads the value via wireless to LoRaWAN IoT Server. 23 23 24 -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.25 +The LoRa wireless technology used in SW3L-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 25 26 - DDS75-LB (% style="color:blue" %)**supports BLE configure**(%%) and (% style="color:blue" %)**wireless OTA update**(%%) which make user easy to use.27 +SW3L-LB (% style="color:blue" %)**supports BLE configure**(%%) and (% style="color:blue" %)**wireless OTA update**(%%) which make user easy to use. 27 27 28 - DDS75-LB is powered by (% style="color:blue" %)**8500mAh Li-SOCI2 battery**(%%), it is designed for long term use up to 5 years.29 +SW3L-LB is powered by (% style="color:blue" %)**8500mAh Li-SOCI2 battery**(%%), it is designed for long term use up to 5 years. 29 29 30 -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.31 +Each SW3L-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 31 32 32 [[image:image-20230612170943-2.png||height="525" width="912"]] 33 33 ... ... @@ -49,10 +49,36 @@ 49 49 * IP66 Waterproof Enclosure 50 50 * 8500mAh Battery for long term use 51 51 52 - 53 53 == 1.3 Specification == 54 54 55 55 56 +(% style="color:#037691" %)**Rated environmental conditions:** 57 + 58 +(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:500px" %) 59 +|(% style="background-color:#d9e2f3; color:#0070c0; width:163px" %)**Item**|(% style="background-color:#d9e2f3; color:#0070c0; width:90px" %)((( 60 +**Minimum value** 61 +)))|(% style="background-color:#d9e2f3; color:#0070c0; width:70px" %)((( 62 +**Typical value** 63 +)))|(% style="background-color:#d9e2f3; color:#0070c0; width:87px" %)((( 64 +**Maximum value** 65 +)))|(% style="background-color:#d9e2f3; color:#0070c0; width:40px" %)**Unit**|(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**Remarks** 66 +|(% style="width:174px" %)Storage temperature|(% style="width:86px" %)-25|(% style="width:66px" %)25|(% style="width:90px" %)80|(% style="width:48px" %)℃|(% style="width:203px" %) 67 +|(% style="width:174px" %)Storage humidity|(% style="width:86px" %) |(% style="width:66px" %)65%|(% style="width:90px" %)90%|(% style="width:48px" %)RH|(% style="width:203px" %)(1) 68 +|(% style="width:174px" %)Operating temperature|(% style="width:86px" %)-15|(% style="width:66px" %)25|(% style="width:90px" %)60|(% style="width:48px" %)℃|(% style="width:203px" %) 69 +|(% style="width:174px" %)Working humidity|(% style="width:86px" %)((( 70 + 71 + 72 + 73 +)))|(% style="width:66px" %)65%|(% style="width:90px" %)80%|(% style="width:48px" %)RH|(% style="width:203px" %)(1) 74 + 75 +((( 76 +**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing); ** 77 + 78 +**~ b. When the ambient temperature is 40-50 ℃, the highest humidity is the highest humidity in the natural world at the current temperature (no condensation)** 79 + 80 + 81 +))) 82 + 56 56 (% style="color:#037691" %)**Common DC Characteristics:** 57 57 58 58 * Supply Voltage: built in 8500mAh Li-SOCI2 battery , 2.5v ~~ 3.6v ... ... @@ -78,49 +78,20 @@ 78 78 * Sleep Mode: 5uA @ 3.3v 79 79 * LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm 80 80 108 +== 1.4 Effective measurement range Reference beam pattern == 81 81 82 -== 1.4 Rated environmental conditions == 83 83 111 +**~1. The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.** 84 84 85 -(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:500px" %) 86 -|(% style="background-color:#d9e2f3; color:#0070c0; width:163px" %)**Item**|(% style="background-color:#d9e2f3; color:#0070c0; width:90px" %)((( 87 -**Minimum value** 88 -)))|(% style="background-color:#d9e2f3; color:#0070c0; width:70px" %)((( 89 -**Typical value** 90 -)))|(% style="background-color:#d9e2f3; color:#0070c0; width:87px" %)((( 91 -**Maximum value** 92 -)))|(% style="background-color:#d9e2f3; color:#0070c0; width:40px" %)**Unit**|(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**Remarks** 93 -|(% style="width:174px" %)Storage temperature|(% style="width:86px" %)-25|(% style="width:66px" %)25|(% style="width:90px" %)80|(% style="width:48px" %)℃|(% style="width:203px" %) 94 -|(% style="width:174px" %)Storage humidity|(% style="width:86px" %) |(% style="width:66px" %)65%|(% style="width:90px" %)90%|(% style="width:48px" %)RH|(% style="width:203px" %)(1) 95 -|(% style="width:174px" %)Operating temperature|(% style="width:86px" %)-15|(% style="width:66px" %)25|(% style="width:90px" %)60|(% style="width:48px" %)℃|(% style="width:203px" %) 96 -|(% style="width:174px" %)Working humidity|(% style="width:86px" %)((( 97 - 98 - 99 - 100 -)))|(% style="width:66px" %)65%|(% style="width:90px" %)80%|(% style="width:48px" %)RH|(% style="width:203px" %)(1) 101 - 102 -((( 103 -(% style="color:red" %)**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing); ** 104 - 105 -(% style="color:red" %)** b. When the ambient temperature is 40-50 ℃, the highest humidity is the highest humidity in the natural world at the current temperature (no condensation)** 106 - 107 - 108 -))) 109 - 110 -== 1.5 Effective measurement range Reference beam pattern == 111 - 112 - 113 -(% style="color:blue" %)**1. The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.** 114 - 115 115 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654852253176-749.png?rev=1.1||alt="1654852253176-749.png"]] 116 116 117 117 118 - (% style="color:blue" %)**2. The object to be tested is a "corrugated cardboard box" perpendicular to the central axis of 0 °, and the length * width is 60cm * 50cm.**116 +**2. The object to be tested is a "corrugated cardboard box" perpendicular to the central axis of 0 °, and the length * width is 60cm * 50cm.** 119 119 120 120 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654852175653-550.png?rev=1.1||alt="1654852175653-550.png"]] 121 121 122 122 123 -== 1. 6Applications ==121 +== 1.5 Applications == 124 124 125 125 126 126 * Horizontal distance measurement ... ... @@ -133,16 +133,15 @@ 133 133 * Sewer 134 134 * Bottom water level monitoring 135 135 134 +== 1.6 Sleep mode and working mode == 136 136 137 -== 1.7 Sleep mode and working mode == 138 138 139 - 140 140 (% style="color:blue" %)**Deep Sleep Mode: **(%%)Sensor doesn't have any LoRaWAN activate. This mode is used for storage and shipping to save battery life. 141 141 142 142 (% style="color:blue" %)**Working Mode:** (%%)In this mode, Sensor will work as LoRaWAN Sensor to Join LoRaWAN network and send out sensor data to server. Between each sampling/tx/rx periodically, sensor will be in IDLE mode), in IDLE mode, sensor has the same power consumption as Deep Sleep mode. 143 143 144 144 145 -== 1. 8Button & LEDs ==142 +== 1.7 Button & LEDs == 146 146 147 147 148 148 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675071855856-879.png]] ... ... @@ -161,10 +161,9 @@ 161 161 ))) 162 162 |(% style="width:167px" %)Fast press ACT 5 times.|(% style="width:117px" %)Deactivate Device|(% style="width:225px" %)(% style="color:red" %)**Red led**(%%) will solid on for 5 seconds. Means device is in Deep Sleep Mode. 163 163 161 +== 1.8 BLE connection == 164 164 165 -== 1.9 BLE connection == 166 166 167 - 168 168 DDS75-LB support BLE remote configure. 169 169 170 170 ... ... @@ -177,14 +177,16 @@ 177 177 If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode. 178 178 179 179 180 -== 1. 10Pin Definitions ==176 +== 1.9 Pin Definitions == 181 181 182 182 [[image:image-20230523174230-1.png]] 183 183 184 184 185 -== 1.11Mechanical==181 +== == 186 186 183 +== 2.10 Mechanical == 187 187 185 + 188 188 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143884058-338.png]] 189 189 190 190 ... ... @@ -194,7 +194,7 @@ 194 194 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143909447-639.png]] 195 195 196 196 197 - (% style="color:blue" %)**Probe Mechanical:**195 +**Probe Mechanical:** 198 198 199 199 200 200 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/image-20220610172003-1.png?rev=1.1||alt="image-20220610172003-1.png"]] ... ... @@ -270,13 +270,20 @@ 270 270 271 271 272 272 ((( 271 +((( 273 273 DDS75-LB will uplink payload via LoRaWAN with below payload format: 274 274 ))) 275 275 276 276 ((( 277 -Uplink payload includes in total 8 bytes. 276 +Uplink payload includes in total 4 bytes. 277 +Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance 278 278 ))) 279 +))) 279 279 281 +((( 282 + 283 +))) 284 + 280 280 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %) 281 281 |=(% style="width: 62.5px;background-color:#D9E2F3;color:#0070C0" %)((( 282 282 **Size(bytes)** ... ... @@ -316,13 +316,12 @@ 316 316 317 317 318 318 * If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor. 319 -* If the sensor value lower than 0x0118 (280mm), the sensor value will be invalid. All value lower than 280mm will be set to 0x0014(20mm) which means the value is invalid.324 +* If the sensor value lower than 0x0118 (280mm), the sensor value will be invalid. Since v1.1.4, all value lower than 280mm will be set to 0x0014(20mm) which means the value is invalid. 320 320 321 - 322 322 === 2.3.3 Interrupt Pin === 323 323 324 324 325 -This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H3.3 .2SetInterruptMode"]] for the hardware and software set up.329 +This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H3.3A0SetInterruptMode"]] for the hardware and software set up. 326 326 327 327 **Example:** 328 328 ... ... @@ -342,7 +342,9 @@ 342 342 343 343 If payload is: FF3FH : (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees. 344 344 349 +(% style="color:red" %)**Note: DS18B20 feature is supported in the hardware version > v1.3 which made since early of 2021.** 345 345 351 + 346 346 === 2.3.5 Sensor Flag === 347 347 348 348 ... ... @@ -372,7 +372,7 @@ 372 372 == 2.4 Uplink Interval == 373 373 374 374 375 -The DDS75-LB by default uplink the sensor data every 20 minutes. User can change this interval by AT Command or LoRaWAN Downlink Command. See this link: [[Change Uplink Interval>>||anchor="H 3.3.1SetTransmitIntervalTime"]]381 +The DDS75-LB by default uplink the sensor data every 20 minutes. User can change this interval by AT Command or LoRaWAN Downlink Command. See this link: [[Change Uplink Interval>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H4.1ChangeUplinkInterval"]] 376 376 377 377 378 378 == 2.5 Show Data in DataCake IoT Server == ... ... @@ -382,6 +382,9 @@ 382 382 [[DATACAKE>>url:https://datacake.co/]] provides a human friendly interface to show the sensor data, once we have data in TTN, we can use [[DATACAKE>>url:https://datacake.co/]] to connect to TTN and see the data in DATACAKE. Below are the steps: 383 383 ))) 384 384 391 +((( 392 + 393 +))) 385 385 386 386 ((( 387 387 (% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.** ... ... @@ -456,7 +456,7 @@ 456 456 457 457 User need to set (% style="color:blue" %)**SYNCMOD=1**(%%) to enable sync time via MAC command. 458 458 459 -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).468 +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 SW3L-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). 460 460 461 461 (% 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.** 462 462 ... ... @@ -496,7 +496,7 @@ 496 496 [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/]] 497 497 498 498 499 -= 3. Configure DDS75-LB =508 += 3. Configure SW3L-LB = 500 500 501 501 == 3.1 Configure Methods == 502 502 ... ... @@ -509,7 +509,6 @@ 509 509 510 510 * LoRaWAN Downlink. Instruction for different platforms: See [[IoT LoRaWAN Server>>http://wiki.dragino.com/xwiki/bin/view/Main/]] section. 511 511 512 - 513 513 == 3.2 General Commands == 514 514 515 515 ... ... @@ -570,9 +570,6 @@ 570 570 ))) 571 571 * ((( 572 572 Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds 573 - 574 - 575 - 576 576 ))) 577 577 578 578 === 3.3.2 Set Interrupt Mode === ... ... @@ -609,7 +609,6 @@ 609 609 610 610 * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger 611 611 612 - 613 613 = 4. Battery & Power Consumption = 614 614 615 615 ... ... @@ -634,75 +634,23 @@ 634 634 635 635 Methods to Update Firmware: 636 636 637 -* (Recommanded way) OTA firmware update via wireless: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/]] 641 +* (Recommanded way) OTA firmware update via wireless: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/]] 638 638 639 -* Update through UART TTL interface :**[[Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H1.LoRaSTv4baseHardware]]**.643 +* Update through UART TTL interface. **[[Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H1.LoRaSTv4baseHardware]]**. 640 640 641 - 642 642 = 6. FAQ = 643 643 644 -== 6.1 Whatis thefrequencyplan forDDS75-LB?==647 +== 6.1 AT Commands input doesn't work == 645 645 646 646 647 - DDS75-LBusethesame frequencyasotherDraginoproducts.Usercanseethe detail fromthis link:[[Introduction>>doc:Main.EndDeviceFrequencyBand.WebHome||anchor="H1.Introduction"]]650 +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. 648 648 649 649 650 -= =6.2Can I use DDS75-LB in condensationenvironment?==653 += 7. Order Info = 651 651 652 652 653 - DDS75-LB is notsuitable to beused incondensation environment.Condensation on theDDS75-LBprobe will affect the reading and always got 0.656 +Part Number: (% style="color:blue" %)**DDS75-LB-XXX-YYY** 654 654 655 - 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 -== 7.4 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:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/image-20230113135125-2.png?width=1057&height=136&rev=1.1||alt="image-20230113135125-2.png"]] 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 - 706 706 (% style="color:red" %)**XXX**(%%): **The default frequency band** 707 707 708 708 * (% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band ... ... @@ -721,10 +721,40 @@ 721 721 722 722 * (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band 723 723 676 +((( 677 +(% style="color:blue" %)**YYY**(%%): **Flow Sensor Model:** 678 +))) 724 724 725 -= 9. Packing Info = 680 +((( 681 + (% style="color:blue" %) **004:**(%%) DW-004 Flow Sensor: diameter: G1/2” / DN15. 450 pulse = 1 L 682 +))) 726 726 684 +((( 685 + (% style="color:blue" %) **006:**(%%) DW-006 Flow Sensor: diameter: G3/4” / DN20. 390 pulse = 1 L 686 +))) 727 727 688 +((( 689 + (% style="color:blue" %) **010:**(%%) DW-010 Flow Sensor: diameter: G 1” / DN25. 64 pulse = 1 L 690 +))) 691 + 692 +* ((( 693 +calculate flag=0: for SW3L-004 Flow Sensor: 450 pulse = 1 L 694 +))) 695 + 696 +* ((( 697 +calculate flag=1: for SW3L-006 Flow Sensor: 390 pulse = 1 L 698 +))) 699 + 700 +* ((( 701 +calculate flag=2: for SW3L-010 Flow Sensor: 64 pulse = 1 L 702 + 703 + 704 + 705 +))) 706 + 707 += 8. Packing Info = 708 + 709 + 728 728 (% style="color:#037691" %)**Package Includes**: 729 729 730 730 * DDS75-LB LoRaWAN Distance Detection Sensor x 1 ... ... @@ -739,10 +739,9 @@ 739 739 740 740 * Weight / pcs : g 741 741 724 += 9. Support = 742 742 743 -= 10. Support = 744 744 745 - 746 746 * 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. 747 747 748 748 * 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]].
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