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Last modified by Mengting Qiu on 2025/07/03 16:36
From version 63.1
edited by Xiaoling
on 2025/03/31 16:41
Change comment: Uploaded new attachment "image-20250331164144-17.jpeg", version {1}
To version 72.1
edited by Mengting Qiu
on 2025/07/03 16:36
Change comment: There is no comment for this version

Summary

Details

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Author
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1 -XWiki.Xiaoling
1 +XWiki.ting
Content
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1 1  (% style="display:none" %) (%%)
2 2  
3 -(% style="text-align:center" %)
4 -[[image:image-20240108161155-2.png]]
3 +[[image:image-20240108161155-2.png||data-xwiki-image-style-alignment="center"]]
5 5  
6 6  
7 7  
... ... @@ -60,9 +60,6 @@
60 60  )))
61 61  
62 62  
63 -[[image:image-20230522092934-2.png||height="346" width="774"]]
64 -
65 -
66 66  == 1.2 ​Features ==
67 67  
68 68  
... ... @@ -127,20 +127,20 @@
127 127  == 1.6 Button & LEDs ==
128 128  
129 129  
130 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LB_Waterproof_RS485UART_to_LoRaWAN_Converter/WebHome/image-20240103160425-4.png?rev=1.1||alt="image-20240103160425-4.png"]]
126 +[[image:image-20250417152253-1.jpeg]]
131 131  
132 132  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
133 133  |=(% style="width: 167px;background-color:#4F81BD;color:white" %)**Behavior on ACT**|=(% style="width: 117px;background-color:#4F81BD;color:white" %)**Function**|=(% style="width: 226px;background-color:#4F81BD;color:white" %)**Action**
134 -|(% style="width:167px" %)Pressing ACT between 1s < time < 3s|(% style="width:117px" %)Send an uplink|(% style="width:225px" %)(((
130 +|[[image:1749536870332-565.png]] 1~~3s|(% style="width:117px" %)Send an uplink|(% style="width:225px" %)(((
135 135  If sensor is already Joined to LoRaWAN network, sensor will send an uplink packet, (% style="color:blue" %)**blue led** (%%)will blink once.
136 136  Meanwhile, BLE module will be active and user can connect via BLE to configure device.
137 137  )))
138 -|(% style="width:167px" %)Pressing ACT for more than 3s|(% style="width:117px" %)Active Device|(% style="width:225px" %)(((
134 +|[[image:1749536872361-767.png]] >3s|(% style="width:117px" %)Active Device|(% style="width:225px" %)(((
139 139  (% style="color:green" %)**Green led**(%%) will fast blink 5 times, device will enter (% style="color:#037691" %)**OTA mode**(%%) for 3 seconds. And then start to JOIN LoRaWAN network.
140 140  (% style="color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.
141 141  Once sensor is active, BLE module will be active and user can connect via BLE to configure device, no matter if device join or not join LoRaWAN network.
142 142  )))
143 -|(% 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.
139 +|[[image:1749536881052-376.png]] x5|(% 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.
144 144  
145 145  == 1.7 BLE connection ==
146 146  
... ... @@ -166,7 +166,7 @@
166 166  
167 167  === 1.9.1 for LB version ===
168 168  
169 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/DDS75-LB_LoRaWAN_Distance_Detection_Sensor_User_Manual/WebHome/image-20240105152536-3.png?rev=1.1||alt="image-20240105152536-3.png"]]
165 +[[image:image-20250331163305-1.jpeg]]
170 170  
171 171  
172 172  (% style="color:blue" %)**Probe Mechanical:**
... ... @@ -174,15 +174,12 @@
174 174  [[image:Main.User Manual for LoRaWAN End Nodes.LDS03A - Outdoor LoRaWAN OpenClose Door Sensor Manual.WebHome@1654741444887-479.png||height="399" width="513"]]
175 175  
176 176  
177 -
178 178  === 1.9.2 for LS version ===
179 179  
180 180  
181 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/SN50v3-LB/WebHome/image-20231231203439-3.png?width=886&height=385&rev=1.1||alt="image-20231231203439-3.png"]]
176 +[[image:image-20250331163324-2.jpeg]]
182 182  
183 183  
184 -
185 -
186 186  == 1.10 Magnet Distance ==
187 187  
188 188  
... ... @@ -204,7 +204,7 @@
204 204  
205 205  The LPS8v2 is already set to connected to [[TTN network >>url:https://console.cloud.thethings.network/]], so what we need to now is configure the TTN server.
206 206  
207 -[[image:image-20230522092858-1.png||height="391" width="874"]]
200 +[[image:image-20250417152741-2.png]]
208 208  
209 209  
210 210  (% style="color:blue" %)**Step 1:**(%%) Create a device in TTN with the OTAA keys from DS03A-LB/LS.
... ... @@ -216,32 +216,45 @@
216 216  
217 217  You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:
218 218  
219 -(% style="display:none" %) (%%)
212 +**Create the application.**
220 220  
221 -(% style="color:blue" %)**Register the device**
214 +[[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/SAC01L_LoRaWAN_Temperature%26Humidity_Sensor_User_Manual/WebHome/image-20250423093843-1.png?width=756&height=264&rev=1.1||alt="image-20250423093843-1.png"]]
222 222  
216 +[[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LTC2-LB--LoRaWAN_Temperature_Transmitter_User_Manual/WebHome/image-20240907111305-2.png?width=1000&height=572&rev=1.1||alt="image-20240907111305-2.png"]]
223 223  
224 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual/WebHome/1675144099263-405.png?rev=1.1||alt="1675144099263-405.png"]](% style="display:none" %)
225 225  
219 +**Add devices to the created Application.**
226 226  
227 -(% style="color:blue" %)**Add APP EUI and DEV EUI**
221 +[[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LTC2-LB--LoRaWAN_Temperature_Transmitter_User_Manual/WebHome/image-20240907111659-3.png?width=977&height=185&rev=1.1||alt="image-20240907111659-3.png"]]
228 228  
229 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual/WebHome/1675144117571-832.png?rev=1.1||alt="1675144117571-832.png"]]
223 +[[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LTC2-LB--LoRaWAN_Temperature_Transmitter_User_Manual/WebHome/image-20240907111820-5.png?width=975&height=377&rev=1.1||alt="image-20240907111820-5.png"]]
230 230  
231 231  
232 -(% style="color:blue" %)**Add APP EUI in the application**
226 +**Enter end device specifics manually.**
233 233  
234 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual/WebHome/1675144143021-195.png?rev=1.1||alt="1675144143021-195.png"]]
228 +[[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LTC2-LB--LoRaWAN_Temperature_Transmitter_User_Manual/WebHome/image-20240907112136-6.png?width=697&height=687&rev=1.1||alt="image-20240907112136-6.png"]]
235 235  
236 236  
237 -(% style="color:blue" %)**Add APP KEY**
231 +**Add DevEUI and AppKey. Customize a platform ID for the device.**
238 238  
239 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual/WebHome/1675144157838-392.png?rev=1.1||alt="1675144157838-392.png"]]
233 +[[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LTC2-LB--LoRaWAN_Temperature_Transmitter_User_Manual/WebHome/image-20240907112427-7.png?rev=1.1||alt="image-20240907112427-7.png"]]
240 240  
241 241  
242 -(% style="color:blue" %)**Step 2:**(%%) Activate on DS03A-LB/LS
236 +(% style="color:blue" %)**Step 2:**(%%) Add decoder.
243 243  
238 +In TTN, user can add a custom payload so it shows friendly reading.
244 244  
240 +Click this link to get the decoder: [[https:~~/~~/github.com/dragino/dragino-end-node-decoder/tree/main/>>url:https://github.com/dragino/dragino-end-node-decoder/tree/main/]]
241 +
242 +Below is TTN screen shot:
243 +
244 +[[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDS25-LBLDS25-LS--LoRaWAN_LiDAR_Distance_Auto-Clean_Sensor_User_Manual/WebHome/image-20241009140556-1.png?width=1184&height=488&rev=1.1||alt="image-20241009140556-1.png" height="488" width="1184"]]
245 +
246 +[[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDS25-LBLDS25-LS--LoRaWAN_LiDAR_Distance_Auto-Clean_Sensor_User_Manual/WebHome/image-20241009140603-2.png?width=1168&height=562&rev=1.1||alt="image-20241009140603-2.png" height="562" width="1168"]]
247 +
248 +
249 +(% style="color:blue" %)**Step 3:**(%%) Activate on DS03A-LB/LS
250 +
245 245  Press the button for 5 seconds to activate the DS03A-LB/LS.
246 246  
247 247  (% style="color:green" %)**Green led**(%%) will fast blink 5 times, device will enter (% style="color:blue" %)**OTA mode**(%%) for 3 seconds. And then start to Join LoRaWAN network. (% style="color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.
... ... @@ -659,46 +659,54 @@
659 659  
660 660  == 2.5 Datalog Feature ==
661 661  
668 + Datalog Feature is to ensure IoT Server can get all sampling data from Sensor even if the LoRaWAN network is down. For each sampling, DS03A-LB/LS will store the reading for future retrieving purposes.
662 662  
663 -(% style="color:blue" %)**Datalog Feature** (%%)is to ensure IoT Server can get all sampling data from Sensor even if the LoRaWAN network is down. For each sampling, DS03A-LB/LS will store the reading for future retrieving purposes.
664 664  
665 -(% style="color:red" %)**Note:After the device is reset,in cumulative counting mode,the last stored count value will be read as the initial value.**
671 +=== 2.5.1 How datalog works ===
666 666  
667 667  
668 -=== 2.5.1 Ways to get datalog via LoRaWAN ===
674 +DS03A-LB/LS will wait for ACK for every uplink, when there is no LoRaWAN network,DS03A-LB/LS 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.
669 669  
676 +* (((
677 +a) DS03A-LB/LS will do an ACK check for data records sending to make sure every data arrive server.
678 +)))
679 +* (((
680 +b) DS03A-LB/LS will send data in **CONFIRMED Mode**, but DS03A-LB/LS 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 DS03A-LB/LS gets a ACK, DS03A-LB/LS will consider there is a network connection and resend all NONE-ACK messages.
670 670  
671 -Set PNACKMD=1, DS03A-LB/LS will wait for ACK for every uplink, when there is no LoRaWAN network, DS03A-LB/LS 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.
682 +
683 +)))
672 672  
673 -* a) DS03A-LB/LS will do an ACK check for data records sending to make sure every data arrive server.
674 -* b) DS03A-LB/LS will send data in **CONFIRMED Mode** when PNACKMD=1, but DS03A-LB/LS 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 DS03A-LB/LS gets a ACK, DS03A-LB/LS will consider there is a network connection and resend all NONE-ACK Message.
685 +=== 2.5.2 Enable Datalog ===
675 675  
676 -=== 2.5.2 Unix TimeStamp ===
677 677  
688 +User need to make sure below two settings are enable to use datalog;
678 678  
679 -DS03A-LB/LS uses Unix TimeStamp format based on
690 +* (% style="color:blue" %)**SYNCMOD=1(Default)**(%%) to enable sync time via LoRaWAN MAC command, click here ([[AT+SYNCMOD>>https://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/#H4.6Settimesynchronizationmethod28ThenetworkservermustsupportLoRaWANv1.0.329]]) for detailed instructions.
691 +* (% style="color:blue" %)**PNACKMD=1**(%%)** **to enable datalog feature, click here ([[AT+PNACKMD>>https://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/#H7.26RequesttheservertosendanACK]]) for detailed instructions.
680 680  
681 -[[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="image-20220523001219-11.png" height="97" width="627"]]
682 682  
683 -User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
684 684  
685 -Below is the converter example
695 +Once DS03A-LB/LS Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to DS03A-LB/LS. If DS03A-LB/LS fails to get the time from the server, DS03A-LB/LS will use the internal time and wait for next time request (AT+SYNCTDC to set the time request period, default is 10 days).
686 686  
687 -[[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-20220523001219-12.png?width=720&height=298&rev=1.1||alt="image-20220523001219-12.png" height="298" width="720"]]
697 +(% 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.**
688 688  
689 -So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
690 690  
700 +=== 2.5.3 Unix TimeStamp ===
691 691  
692 -=== 2.5.3 Set Device Time ===
693 693  
703 +DS03A-LB/LS uses Unix TimeStamp format based on
694 694  
695 -User need to set (% style="color:blue" %)**SYNCMOD=1**(%%) to enable sync time via MAC command.
705 +[[image:image-20250331163638-7.jpeg]]
696 696  
697 -Once DS03A-LB/LS Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to DS03A-LB/LS. If DS03A-LB/LS fails to get the time from the server, DS03A-LB/LS will use the internal time and wait for next time request (AT+SYNCTDC to set the time request period, default is 10 days).
707 +User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
698 698  
699 -(% 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 and loriot support but TTN 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 v2 if SYNCMOD=1.**
709 +Below is the converter example
700 700  
711 +[[image:image-20250331163648-8.jpeg]]
701 701  
713 +So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
714 +
715 +
702 702  == 2.6 ​Show Data in DataCake IoT Server ==
703 703  
704 704  
... ... @@ -709,36 +709,35 @@
709 709  
710 710  (% style="color:blue" %)**Step 2:**(%%)** Configure DS03A-LB/LS in Datacake.**
711 711  
712 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDS03A%20-%20Outdoor%20LoRaWAN%20OpenClose%20Door%20Sensor%20Manual/WebHome/1654746350207-427.png?rev=1.1||alt="1654746350207-427.png"]]
726 +[[image:image-20250331163745-9.jpeg]]
713 713  
714 714  
715 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDS03A%20-%20Outdoor%20LoRaWAN%20OpenClose%20Door%20Sensor%20Manual/WebHome/1654747162439-840.png?rev=1.1||alt="1654747162439-840.png"]]
716 716  
730 +[[image:image-20250331163816-10.jpeg]]
717 717  
718 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDS03A%20-%20Outdoor%20LoRaWAN%20OpenClose%20Door%20Sensor%20Manual/WebHome/1654746405400-203.png?rev=1.1||alt="1654746405400-203.png"]]
719 719  
733 +[[image:image-20250331163900-11.jpeg]]
720 720  
721 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDS03A%20-%20Outdoor%20LoRaWAN%20OpenClose%20Door%20Sensor%20Manual/WebHome/1654746763908-732.png?rev=1.1||alt="1654746763908-732.png"]]
735 +[[image:image-20250331163939-12.jpeg]]
722 722  
737 +[[image:image-20250331163958-13.jpeg]]
723 723  
724 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDS03A%20-%20Outdoor%20LoRaWAN%20OpenClose%20Door%20Sensor%20Manual/WebHome/1654746716087-684.png?rev=1.1||alt="1654746716087-684.png"]]
725 725  
740 +[[image:image-20250331164026-14.jpeg]]
726 726  
727 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDS03A%20-%20Outdoor%20LoRaWAN%20OpenClose%20Door%20Sensor%20Manual/WebHome/1654746693868-718.png?rev=1.1||alt="1654746693868-718.png"]]
728 728  
743 +[[image:image-20250331164049-15.jpeg]]
729 729  
730 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDS03A%20-%20Outdoor%20LoRaWAN%20OpenClose%20Door%20Sensor%20Manual/WebHome/1654746674738-826.png?rev=1.1||alt="1654746674738-826.png"]]
731 731  
746 +[[image:image-20250331164119-16.jpeg]]
732 732  
733 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDS03A%20-%20Outdoor%20LoRaWAN%20OpenClose%20Door%20Sensor%20Manual/WebHome/1654746646379-591.png?rev=1.1||alt="1654746646379-591.png"]]
734 734  
749 +[[image:image-20250331164144-17.jpeg]]
735 735  
736 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDS03A%20-%20Outdoor%20LoRaWAN%20OpenClose%20Door%20Sensor%20Manual/WebHome/1654746549277-209.png?rev=1.1||alt="1654746549277-209.png"]]
737 737  
752 +[[image:image-20250331164208-18.jpeg]]
738 738  
739 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDS03A%20-%20Outdoor%20LoRaWAN%20OpenClose%20Door%20Sensor%20Manual/WebHome/1654746593411-887.png?rev=1.1||alt="1654746593411-887.png"]]
740 740  
741 -
742 742  == 2.7 Frequency Plans ==
743 743  
744 744  
... ... @@ -907,7 +907,7 @@
907 907  * (((
908 908  (% style="color:#037691" %)**AT+TTRIG1=1,30** (%%) **~-~->** When the **Keep Status** change from close to open, and device remains in open status for more than 30 seconds. DS03A-LB/LS will send an uplink packet, the Alarm1 bit(the second bit of 1^^st^^ byte of payload) on this uplink packet is set to 1.
909 909  
910 -(% style="color:#037691" %)**AT+TTRIG1=0,30** (%%) **~-~->** When the **Keep Status** change from open to close, and device remains in open status for more than 30 seconds. DS03A-LB/LS will send an uplink packet, the Alarm1 bit (the second bit of 1^^st^^ byte of payload) on this uplink packet is set to 1.
923 +(% style="color:#037691" %)**AT+TTRIG1=0,30** (%%) **~-~->** When the **Keep Status** change from open to close, and device remains in close status for more than 30 seconds. DS03A-LB/LS will send an uplink packet, the Alarm1 bit (the second bit of 1^^st^^ byte of payload) on this uplink packet is set to 1.
911 911  )))
912 912  
913 913  * (((
... ... @@ -929,7 +929,7 @@
929 929  * (((
930 930  (% style="color:#037691" %)**AT+TTRIG2=1,30** (%%) **~-~->** When the **Keep Status** change from close to open, and device remains in open status for more than 30 seconds. DS03A-LB/LS will send an uplink packet, the Alarm2 bit (the second bit of 12^^st^^ byte of payload) on this uplink packet is set to 1.
931 931  
932 -(% style="color:#037691" %)**AT+TTRIG2=0,30** (%%) **~-~->** When the **Keep Status** change from open to close, and device remains in open status for more than 30 seconds. DS03A-LB/LS will send an uplink packet, the Alarm2 bit (the second bit of 12^^st^^ byte of payload) on this uplink packet is set to 1.
945 +(% style="color:#037691" %)**AT+TTRIG2=0,30** (%%) **~-~->** When the **Keep Status** change from open to close, and device remains in close status for more than 30 seconds. DS03A-LB/LS will send an uplink packet, the Alarm2 bit (the second bit of 12^^st^^ byte of payload) on this uplink packet is set to 1.
933 933  )))
934 934  
935 935  * (((
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