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 75-LB--LoRaWAN1 +DDS45-LB_LoRaWAN_Distance_Detection_Sensor_User_Manual - Content
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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 ... ... @@ -50,36 +50,11 @@ 50 50 * IP66 Waterproof Enclosure 51 51 * 8500mAh Battery for long term use 52 52 53 -== 1.3 Specification == 54 54 55 55 56 - (% style="color:#037691"%)**Rated environmentalconditions:**55 +== 1.3 Specification == 57 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 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 - 83 83 (% style="color:#037691" %)**Common DC Characteristics:** 84 84 85 85 * Supply Voltage: built in 8500mAh Li-SOCI2 battery , 2.5v ~~ 3.6v ... ... @@ -105,20 +105,50 @@ 105 105 * Sleep Mode: 5uA @ 3.3v 106 106 * LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm 107 107 108 -== 1.4 Effective measurement range Reference beam pattern == 109 109 110 110 111 - **~1.Thetestedobject is a white cylindrical tubemadeof PVC, withaheight of 100cm anda diameterof7.5cm.**85 +== 1.4 Rated environmental conditions == 112 112 87 + 88 +(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:500px" %) 89 +|(% style="background-color:#d9e2f3; color:#0070c0; width:163px" %)**Item**|(% style="background-color:#d9e2f3; color:#0070c0; width:90px" %)((( 90 +**Minimum value** 91 +)))|(% style="background-color:#d9e2f3; color:#0070c0; width:70px" %)((( 92 +**Typical value** 93 +)))|(% style="background-color:#d9e2f3; color:#0070c0; width:87px" %)((( 94 +**Maximum value** 95 +)))|(% style="background-color:#d9e2f3; color:#0070c0; width:40px" %)**Unit**|(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**Remarks** 96 +|(% style="width:174px" %)Storage temperature|(% style="width:86px" %)-25|(% style="width:66px" %)25|(% style="width:90px" %)80|(% style="width:48px" %)℃|(% style="width:203px" %) 97 +|(% style="width:174px" %)Storage humidity|(% style="width:86px" %) |(% style="width:66px" %)65%|(% style="width:90px" %)90%|(% style="width:48px" %)RH|(% style="width:203px" %)(1) 98 +|(% style="width:174px" %)Operating temperature|(% style="width:86px" %)-15|(% style="width:66px" %)25|(% style="width:90px" %)60|(% style="width:48px" %)℃|(% style="width:203px" %) 99 +|(% style="width:174px" %)Working humidity|(% style="width:86px" %)((( 100 + 101 + 102 + 103 +)))|(% style="width:66px" %)65%|(% style="width:90px" %)80%|(% style="width:48px" %)RH|(% style="width:203px" %)(1) 104 + 105 +((( 106 +(% style="color:red" %)**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing); ** 107 + 108 +(% 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)** 109 + 110 + 111 +))) 112 + 113 +== 1.5 Effective measurement range Reference beam pattern == 114 + 115 + 116 +(% 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.** 117 + 113 113 [[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"]] 114 114 115 115 116 -**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.** 121 +(% 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.** 117 117 118 118 [[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"]] 119 119 120 120 121 -== 1. 5Applications ==126 +== 1.6 Applications == 122 122 123 123 124 124 * Horizontal distance measurement ... ... @@ -131,15 +131,17 @@ 131 131 * Sewer 132 132 * Bottom water level monitoring 133 133 134 -== 1.6 Sleep mode and working mode == 135 135 136 136 141 +== 1.7 Sleep mode and working mode == 142 + 143 + 137 137 (% 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. 138 138 139 139 (% 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. 140 140 141 141 142 -== 1. 7Button & LEDs ==149 +== 1.8 Button & LEDs == 143 143 144 144 145 145 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675071855856-879.png]] ... ... @@ -158,9 +158,11 @@ 158 158 ))) 159 159 |(% 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. 160 160 161 -== 1.8 BLE connection == 162 162 163 163 170 +== 1.9 BLE connection == 171 + 172 + 164 164 DDS75-LB support BLE remote configure. 165 165 166 166 ... ... @@ -173,16 +173,14 @@ 173 173 If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode. 174 174 175 175 176 -== 1. 9Pin Definitions ==185 +== 1.10 Pin Definitions == 177 177 178 178 [[image:image-20230523174230-1.png]] 179 179 180 180 181 -== == 190 +== 1.11 Mechanical == 182 182 183 -== 2.10 Mechanical == 184 184 185 - 186 186 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143884058-338.png]] 187 187 188 188 ... ... @@ -192,7 +192,7 @@ 192 192 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143909447-639.png]] 193 193 194 194 195 -**Probe Mechanical:** 202 +(% style="color:blue" %)**Probe Mechanical:** 196 196 197 197 198 198 [[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"]] ... ... @@ -268,20 +268,13 @@ 268 268 269 269 270 270 ((( 271 -((( 272 272 DDS75-LB will uplink payload via LoRaWAN with below payload format: 273 273 ))) 274 274 275 275 ((( 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 282 +Uplink payload includes in total 8 bytes. 278 278 ))) 279 -))) 280 280 281 -((( 282 - 283 -))) 284 - 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)** ... ... @@ -321,12 +321,14 @@ 321 321 322 322 323 323 * If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor. 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.324 +* 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. 325 325 326 + 327 + 326 326 === 2.3.3 Interrupt Pin === 327 327 328 328 329 -This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H3.3 A0SetInterruptMode"]] for the hardware and software set up.331 +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. 330 330 331 331 **Example:** 332 332 ... ... @@ -346,9 +346,7 @@ 346 346 347 347 If payload is: FF3FH : (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees. 348 348 349 -(% style="color:red" %)**Note: DS18B20 feature is supported in the hardware version > v1.3 which made since early of 2021.** 350 350 351 - 352 352 === 2.3.5 Sensor Flag === 353 353 354 354 ... ... @@ -378,7 +378,7 @@ 378 378 == 2.4 Uplink Interval == 379 379 380 380 381 -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"]]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>>||anchor="H3.3.1SetTransmitIntervalTime"]] 382 382 383 383 384 384 == 2.5 Show Data in DataCake IoT Server == ... ... @@ -388,9 +388,6 @@ 388 388 [[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: 389 389 ))) 390 390 391 -((( 392 - 393 -))) 394 394 395 395 ((( 396 396 (% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.** ... ... @@ -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 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 S W3L-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).465 +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 ... ... @@ -505,7 +505,7 @@ 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 =505 += 3. Configure DDS75-LB = 509 509 510 510 == 3.1 Configure Methods == 511 511 ... ... @@ -518,6 +518,8 @@ 518 518 519 519 * LoRaWAN Downlink. Instruction for different platforms: See [[IoT LoRaWAN Server>>http://wiki.dragino.com/xwiki/bin/view/Main/]] section. 520 520 518 + 519 + 521 521 == 3.2 General Commands == 522 522 523 523 ... ... @@ -578,9 +578,11 @@ 578 578 ))) 579 579 * ((( 580 580 Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds 581 -))) 582 582 583 583 582 + 583 +))) 584 + 584 584 === 3.3.2 Set Interrupt Mode === 585 585 586 586 ... ... @@ -616,6 +616,7 @@ 616 616 * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger 617 617 618 618 620 + 619 619 = 4. Battery & Power Consumption = 620 620 621 621 ... ... @@ -636,29 +636,82 @@ 636 636 637 637 * Fix bugs. 638 638 639 -Firmware and changelog can be downloaded from : **[[Firmware download link>>url:https://www.dropbox.com/sh/ kwqv57tp6pejias/AAAopYMATh1GM6fZ-VRCLrpDa?dl=0]]**641 +Firmware and changelog can be downloaded from : **[[Firmware download link>>url:https://www.dropbox.com/sh/7la95mae0fn03xe/AACtzs-32m22TLb75B-iIr-Qa?dl=0]]** 640 640 641 641 Methods to Update Firmware: 642 642 643 -* (Recommanded way) OTA firmware update via wireless: 645 +* (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/]] 644 644 645 -* 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]]**.647 +* 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]]**. 646 646 649 + 650 + 647 647 = 6. FAQ = 648 648 649 -== 6.1 AT Commandsinputdoesn'twork==653 +== 6.1 What is the frequency plan for DDS75-LB? == 650 650 651 651 652 - Inthecaseifser can seetheconsoleoutputbutcan'ttypeinputto the device. Pleasecheck ifyoualready includethe (%style="color:green"%)**ENTER**(%%) while sendingout thecommand. Some serial tool doesn't send(% style="color:green"%)**ENTER**(%%) while press thesend key,userneedtodd ENTER intheirstring.656 +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"]] 653 653 654 654 655 -= 7.OrderInfo =659 +== 6.2 Can I use DDS75-LB in condensation environment? == 656 656 657 657 658 - PartNumber: (%style="color:blue"%)**SW3L-LB-XXX-YYY**662 +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. 659 659 660 -(% style="color:red" %)**XXX**(%%): The default frequency band 661 661 665 += 7. Trouble Shooting = 666 + 667 +== 7.1 Why I can't join TTN V3 in US915 / AU915 bands? == 668 + 669 + 670 +It is due to channel mapping. Please see below link: [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]] 671 + 672 + 673 +== 7.2 AT Command input doesn't work == 674 + 675 + 676 +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. 677 + 678 + 679 +== 7.3 Why does the sensor reading show 0 or "No sensor" == 680 + 681 + 682 +~1. The measurement object is very close to the sensor, but in the blind spot of the sensor. 683 + 684 +2. Sensor wiring is disconnected 685 + 686 +3. Not using the correct decoder 687 + 688 + 689 +== 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 == 690 + 691 + 692 +1) Please check if there is something on the probe affecting its measurement (condensed water, volatile oil, etc.) 693 + 694 +2) Does it change with temperature, temperature will affect its measurement 695 + 696 +3) If abnormal data occurs, you can turn on DEBUG mode, Please use downlink or AT COMMAN to enter DEBUG mode. 697 + 698 +downlink command: (% style="color:blue" %)**F1 01**(%%), AT command: (% style="color:blue" %)**AT+DDEBUG=1** 699 + 700 +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 701 + 702 +[[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"]] 703 + 704 + 705 +Its original payload will be longer than other data. Even though it is being parsed, it can be seen that it is abnormal data. 706 + 707 +Please send the data to us for check. 708 + 709 + 710 += 8. Order Info = 711 + 712 + 713 +Part Number: (% style="color:blue" %)**DDS75-LB-XXX** 714 + 715 +(% style="color:red" %)**XXX**(%%): **The default frequency band** 716 + 662 662 * (% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band 663 663 664 664 * (% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band ... ... @@ -675,43 +675,14 @@ 675 675 676 676 * (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band 677 677 678 -((( 679 -(% style="color:blue" %)**YYY**(%%): Flow Sensor Model: 680 -))) 681 681 682 -((( 683 - **004:** DW-004 Flow Sensor: diameter: G1/2” / DN15. 450 pulse = 1 L 684 -))) 685 685 686 -((( 687 - **006:** DW-006 Flow Sensor: diameter: G3/4” / DN20. 390 pulse = 1 L 688 -))) 735 += 9. Packing Info = 689 689 690 -((( 691 - **010:** DW-010 Flow Sensor: diameter: G 1” / DN25. 64 pulse = 1 L 692 -))) 693 693 694 -* ((( 695 -calculate flag=0: for SW3L-004 Flow Sensor: 450 pulse = 1 L 696 -))) 697 - 698 -* ((( 699 -calculate flag=1: for SW3L-006 Flow Sensor: 390 pulse = 1 L 700 -))) 701 - 702 -* ((( 703 -calculate flag=2: for SW3L-010 Flow Sensor: 64 pulse = 1 L 704 - 705 - 706 - 707 -))) 708 - 709 -= 8. Packing Info = 710 - 711 - 712 712 (% style="color:#037691" %)**Package Includes**: 713 713 714 -* S W3L-LB LoRaWANFlowSensor740 +* DDS75-LB LoRaWAN Distance Detection Sensor x 1 715 715 716 716 (% style="color:#037691" %)**Dimension and weight**: 717 717 ... ... @@ -723,9 +723,11 @@ 723 723 724 724 * Weight / pcs : g 725 725 726 -= 9. Support = 727 727 728 728 754 += 10. Support = 755 + 756 + 729 729 * 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. 730 730 731 731 * 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]].