Wiki source code of LDS02 - LoRaWAN Door Sensor User Manual

Version 48.4 by Xiaoling on 2022/06/25 17:39

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2.2	1	(% style="text-align:center" %)
33.2	2	[[image:1654679359875-169.png]]
1.1	3
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47.14	6
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47.14	13	Table of Contents:
	14
17.3	15	{{toc/}}
1.1	16
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	18
17.3	19
	20
48.4	21
	22
	23
2.2	24	= 1. Introduction =
1.1	25
33.2	26	== 1.1 What is LDS02 LoRaWAN Door Sensor ==
1.1	27
	28
3.2	29	(((
47.9	30	(((
33.5	31	The Dragino LDS02 is a (% style="color:#037691" %)LoRaWAN Door Sensor(%%). It detects door open/close status and uplink to IoT server via LoRaWAN network. user can see the door status, open time, open counts in the IoT Server.
47.9	32	)))
1.1	33
47.9	34	(((
33.5	35	LDS02 is powered by (% style="color:#037691" %)2 x AAA batteries(%%) and target for long time use, these two batteries can provide about 16,000 ~~ 70,000 uplink packets. After battery running out, user can easily open the enclosure and replace with 2 common AAA batteries.
47.9	36	)))
1.2	37
47.9	38	(((
33.5	39	The LDS02 will send periodically data every day as well as for each door open/close action. It also (% style="color:#037691" %)counts the door open times(%%) and (% style="color:#037691" %)calculate last door open duration(%%). User can also disable the uplink for each open/close event, instead, device can count each open event and uplink periodically.
47.9	40	)))
1.2	41
47.9	42	(((
33.5	43	LDS02 has the (% style="color:#037691" %)open alarm feature(%%), user can set this feature so device will send Alarm if the door has been open for a certain time.
47.9	44	)))
33.2	45
47.9	46	(((
33.5	47	Each LDS02 is (% style="color:#037691" %)pre-load with a set of unique keys(%%) for LoRaWAN registration, register these keys to LoRaWAN server and it will auto connect after power on.
47.21	48
	49
3.2	50	)))
47.9	51	)))
1.2	52
34.2	53	[[image:image-20220608171947-2.png]]
1.2	54
	55
	56
3.3	57	== 1.2 Features ==
1.2	58
	59	* LoRaWAN Class A v1.0.3
	60	* Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864
	61	* SX1262 LoRa Core
	62	* Water Leak detect
	63	* 2 x AAA LR03 Batteries
	64	* AT Commands to change parameters
	65	* Uplink on periodically and open/close action
	66	* Remote configure parameters via LoRa Downlink
	67	* Firmware upgradable via program port
	68
47.14	69
3.4	70	== 1.3 Applications ==
	71
1.2	72	* Smart Buildings & Home Automation
	73	* Logistics and Supply Chain Management
	74	* Smart Metering
	75	* Smart Agriculture
	76	* Smart Cities
	77	* Smart Factory
	78
47.15	79
5.2	80	== 1.4 Dimension ==
1.2	81
34.3	82	Unit: mm
1.2	83
37.2	84	[[image:1654680563545-120.png]]
1.2	85
5.2	86
37.2	87	[[image:1654680510816-654.png]]
5.2	88
37.2	89
5.2	90	== 1.5 Firmware Change log ==
	91
26.8	92	(((
37.2	93	(((
	94	LDS02 use the same firmware as LDS01.
26.8	95	)))
1.2	96
26.8	97	(((
37.2	98	[[LDS02 Image files – Download link>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDS01/Firmware/]]
26.8	99	)))
37.2	100	)))
1.2	101
	102
37.3	103	= 2. Power ON LDS02 =
1.2	104
37.3	105	When receive the LDS02, please open the enclosure and add 2 x AAA batteries to power it. The [[LED>>\|\|anchor="H4.7LEDs"]] will blink when device is powered.
1.2	106
	107
37.4	108	= 3. How to install LDS02 =
1.2	109
7.4	110	(((
37.4	111	(((
	112	When install the LDS02 on wall. Please make sure install as below so the marks will close to each other when close the door.
7.4	113	)))
1.2	114
37.4	115	(((
	116	Open/Close threshold range: ~~ 25mm
	117	)))
	118	)))
1.2	119
38.2	120	[[image:1654680716522-793.png]]
1.2	121
	122
37.4	123
7.2	124	= 4. Operation Mode =
1.2	125
7.2	126	== 4.1 How it works? ==
1.2	127
26.5	128	(((
46.2	129	The LDS02 is configured as LoRaWAN OTAA Class A mode by default. It has OTAA keys to join network. To connect a local LoRaWAN network, user just need to input the OTAA keys in the network server and [[power on>>\|\|anchor="H2.PowerONLDS02"]] the LDS02. It will auto join the network via OTAA.
26.5	130	)))
1.2	131
26.5	132	(((
7.3	133	In case user can’t set the OTAA keys in the network server and has to use the existing keys from server. User can [[use AT Command>>\|\|anchor="H6.UseATCommand"]] to set the keys in the devices.
26.5	134	)))
1.2	135
	136
7.3	137	== 4.2 Example to join LoRaWAN network ==
7.2	138
1.6	139	Here shows an example for how to join the [[TTN V3 Network>>url:https://eu1.cloud.thethings.network/]]. Below is the network structure, we use [[LG308>>url:http://www.dragino.com/products/lora-lorawan-gateway/item/140-lg308.html]] as LoRaWAN gateway here.
1.2	140
39.2	141	[[image:1654680810108-149.png]]
1.2	142
	143
9.6	144	(((
39.4	145	The LDS02 in installed on the door edge to detect the open / close event. And send the status to LoRaWAN server. The LDS02 will uplink two type of messages to the server.
9.6	146	)))
1.2	147
9.6	148	* (((
	149	A keep-alive message which send once per day.
	150	)))
	151	* (((
39.3	152	A door event message when there is a door open/close. ([[Alarm event can be disabled>>\|\|anchor="H7.3CanIdisableuplinkforeacheventtosavebatterylife3F"]])
9.6	153	)))
1.2	154
9.6	155	(((
29.2	156
	157
47.10	158	(((
1.2	159	The LG308 is already set to connect to [[TTN V3 network >>url:https://eu1.cloud.thethings.network/]]. What we need to now is only configure the TTN V3:
9.6	160	)))
47.10	161	)))
1.2	162
9.6	163	(((
39.4	164	(% style="color:blue" %)Step 1(%%): Create a device in TTN V3 with the OTAA keys from LDS02.
9.6	165	)))
1.2	166
9.6	167	(((
39.4	168	Each LDS02 is shipped with a sticker with unique device EUI:
9.6	169	)))
1.2	170
9.2	171	[[image:1654671040430-368.png]]
1.2	172
	173
	174	User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
	175
47.16	176
14.3	177	Add APP EUI in the application
1.2	178
11.2	179	[[image:1654671794691-956.png]]
1.2	180
	181
11.2	182	[[image:1654671809850-574.png]]
1.2	183
12.2	184	[[image:1654671820156-640.png]]
1.2	185
	186
40.2	187	[[image:1654681258096-500.png]]
1.2	188
	189
47.16	190
14.2	191	Add APP KEY and DEV EUI
1.2	192
40.2	193	[[image:1654671889112-678.png]]
1.2	194
40.2	195
47.11	196	(((
47.16	197	(% style="color:blue" %)Step 2(%%): [[Power on>>\|\|anchor="H2.PowerONLDS02"]] LDS02 and it will auto join to the TTN V3 network. After join success, it will start to upload message to TTN V3 and user can see in the panel.
47.11	198	)))
1.2	199
	200
43.2	201	[[image:1654681390551-993.png]]
1.2	202
40.2	203
	204
14.5	205	== 4.3 Uplink Payload ==
	206
26.11	207
43.2	208	Uplink Payload total 10 bytes.
1.2	209
43.6	210	(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:480px" %)
43.4	211	\|=(% style="width: 80px;" %)Size(bytes)\|=(% style="width: 80px;" %)2\|=(% style="width: 80px;" %)1\|=(% style="width: 80px;" %)3\|=(% style="width: 80px;" %)3\|=(% style="width: 80px;" %)1
43.2	212	\|value\|Status&BAT\|(((
	213	MOD
1.2	214
43.2	215	Always:0x01
	216	)))\|Total open door events\|(((
	217	Last door open
26.10	218
43.2	219	duration (unit: min)
43.4	220	)))\|[[Alarm>>\|\|anchor="H4.6AlarmBaseonTimeout"]]
43.2	221
16.2	222	Example:
1.2	223
43.2	224	[[image:1654681706301-731.png]]
1.2	225
43.2	226	[[image:1654681714641-440.png]]
1.2	227
43.2	228
16.3	229	(((
43.3	230	Example Payload Decoder in TTN V3: [[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDS02/Payload/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDS01/Payload/]]
16.3	231	)))
1.2	232
	233
16.4	234	== 4.4 Downlink Payload ==
1.2	235
26.9	236
16.9	237	(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:410px" %)
16.7	238	\|=(% style="width: 180px;" %)Downlink Control Type\|=(% style="width: 80px;" %)Type Code\|=(% style="width: 150px;" %)Downlink payload size(bytes)
	239	\|(% style="width:180px" %)TDC (Transmit Time Interval—Keep Alive Interval)\|(% style="width:80px" %)0x01\|(% style="width:150px" %)4
	240	\|(% style="width:180px" %)RESET\|(% style="width:80px" %)0x04\|(% style="width:224px" %)2
17.4	241	\|(% style="width:180px" %)[[Set confirmed mode>>\|\|anchor="HTypeCode0x05"]]\|(% style="width:80px" %)0x05\|(% style="width:150px" %)2
	242	\|(% style="width:180px" %)[[Clear Counting>>\|\|anchor="HTypeCode0xA6"]]\|(% style="width:80px" %)0xA6\|(% style="width:150px" %)2
	243	\|(% style="width:180px" %)[[Enable/Disable Alarm>>\|\|anchor="HTypeCode0xA7"]]\|(% style="width:80px" %)0xA7\|(% style="width:150px" %)2
	244	\|(% style="width:180px" %)[[Control ADR/DR>>\|\|anchor="HTypeCode0xA8"]]\|(% style="width:80px" %)0xA8\|(% style="width:150px" %)3
	245	\|(% style="width:180px" %)[[Set Alarm Timeout>>\|\|anchor="HTypeCode0xA9"]]\|(% style="width:80px" %)0xA9\|(% style="width:150px" %)4
1.2	246
	247	Example Downlink payload setting in TTN V3:
	248
17.2	249	[[image:1654673412319-976.png]]
1.2	250
	251
17.3	252	=== (% style="color:#037691" %)Type Code 0x01(%%) ===
1.2	253
43.7	254	If the payload=0100003C, means to control the LDS02’s Keep Alive interval to 0x00003C=60(S)
1.2	255
	256
17.3	257	=== (% style="color:#037691" %)Type Code 0x04(%%) ===
1.2	258
43.7	259	If payload = 0x04FF, it will reset the LDS02.
1.2	260
	261
17.3	262	=== (% style="color:#037691" %)Type Code 0x05(%%) ===
1.2	263
47.11	264	(((
1.2	265	0x05 00: Set uplink to LoRaWAN unconfirmed mode
47.11	266	)))
1.2	267
47.11	268	(((
1.2	269	0x05 01: Set uplink to LoRaWAN confirmed mode
47.11	270	)))
1.2	271
	272
17.3	273	=== (% style="color:#037691" %)Type Code 0xA6(%%) ===
1.2	274
47.11	275	(((
1.2	276	Example: 0xA601: Clear Counting
43.7	277	For LDS02: reset both count number and time.
47.11	278	)))
1.2	279
	280
17.3	281	=== (% style="color:#037691" %)Type Code 0xA7(%%) ===
1.2	282
47.11	283	(((
1.2	284	0xA7 01 : Equal to AT+DISALARM=1
47.11	285	)))
1.2	286
47.11	287	(((
1.2	288	0xA7 00 : Equal to AT+DISALARM=0
47.11	289	)))
1.2	290
	291
17.3	292	=== (% style="color:#037691" %)Type Code 0xA8(%%) ===
1.2	293
47.11	294	(((
1.2	295	Format: 0xA8 aa bb
47.11	296	)))
1.2	297
47.11	298	(((
1.2	299	aa: 1: Enable ADR; 0: Disable ADR (Same as AT+CADR command)
47.11	300	)))
1.2	301
47.11	302	(((
1.2	303	bb: set DR (Same as AT+CDATARATE ,only valid after ADR=0)
47.11	304	)))
1.2	305
47.11	306	(((
1.2	307	Example: 0x A8 00 02 : Set ADR=0 and DR=1
47.11	308	)))
1.2	309
	310
17.3	311	=== (% style="color:#037691" %)Type Code 0xA9(%%) ===
1.2	312
17.7	313	See [[Alarm Base Timeout>>\|\|anchor="H4.6AlarmBaseonTimeout"]] for detail.
1.2	314
	315
17.8	316	== 4.5 Integrate with Datacake ==
1.2	317
21.5	318	(((
47.12	319	(((
1.2	320	Datacake provides a human friendly interface to show the sensor data, once we have data in TTN V3, we can use Datacake to connect to TTN V3 and see the data in Datacake. Below are the steps:
21.5	321	)))
47.12	322	)))
1.2	323
47.12	324	(((
	325
	326	)))
1.2	327
47.12	328	(((
19.2	329	(% style="color:blue" %)Step 1(%%): Be sure that your device is programmed and properly connected to the network at this time.
47.12	330	)))
1.2	331
47.12	332	(((
19.2	333	(% style="color:blue" %)Step 2(%%): To configure the Application to forward data to Datacake you will need to add integration. To add the Datacake integration, perform the following steps:
47.12	334	)))
1.2	335
	336
19.2	337	[[image:1654674520913-519.png]]
1.2	338
	339
19.2	340	[[image:1654674530910-914.png]]
1.2	341
	342
21.2	343	[[image:1654674543078-401.png]]
1.2	344
	345
21.3	346	(% style="color:blue" %)Step 3(%%): Create an account or log in Datacake.
1.2	347
43.8	348	(% style="color:blue" %)Step 4(%%): Search LDS02 and add DevEUI.
1.2	349
21.2	350	[[image:1654674556510-911.png]]
1.2	351
	352
17.8	353	== 4.6 Alarm Base on Timeout ==
1.2	354
23.4	355	(((
43.8	356	(((
	357	LDS02 can monitor the timeout for a status change, this feature can be used to monitor some event such as open fridge too long etc.
23.4	358	)))
1.2	359
23.4	360	(((
1.2	361	User configure this feature by using:
23.4	362	)))
43.8	363	)))
1.2	364
23.4	365	(((
43.8	366	(((
23.4	367
	368	)))
43.8	369	)))
1.2	370
23.4	371	(((
43.8	372	(((
21.5	373	(% style="color:blue" %)AT Command(%%) to configure:
23.4	374	)))
43.8	375	)))
1.2	376
23.4	377	* (((
43.8	378	(((
23.4	379	AT+TTRIG=1,30 ~-~-> When status change from close to open, and device keep in open
	380	)))
43.8	381	)))
1.2	382
23.4	383	(((
43.8	384	(((
47.6	385	status for more than 30 seconds. LDS02 will send an uplink packet, the Alarm bit (the lowest bit of 10^^th^^ byte of payload) on this uplink packet is set to 1.
23.4	386	)))
43.8	387	)))
1.2	388
23.4	389	* (((
43.8	390	(((
23.4	391	AT+TTIG=0,0 ~-~-> Default Value, disable timeout Alarm.
	392	)))
43.8	393	)))
1.2	394
23.4	395	(((
43.8	396	(((
47.17	397
	398
21.5	399	(% style="color:blue" %)Downlink Command(%%) to configure:
23.4	400	)))
43.8	401	)))
1.2	402
23.4	403	(((
43.8	404	(((
21.6	405	Command: 0xA9 aa bb cc
23.4	406	)))
43.8	407	)))
1.2	408
23.4	409	(((
43.8	410	(((
1.2	411	A9: Command Type Code
23.4	412	)))
43.8	413	)))
1.2	414
23.4	415	(((
43.8	416	(((
1.2	417	aa: status to be monitor
23.4	418	)))
43.8	419	)))
1.2	420
23.4	421	(((
43.8	422	(((
1.2	423	bb cc: timeout.
23.4	424	)))
43.8	425	)))
1.2	426
23.4	427	(((
43.8	428	(((
23.4	429
	430	)))
43.8	431	)))
1.2	432
23.4	433	(((
43.8	434	(((
1.2	435	If user send 0xA9 01 00 1E: equal to AT+TTRIG=1,30
23.4	436	)))
43.8	437	)))
1.2	438
23.4	439	(((
43.8	440	(((
1.2	441	Or
23.4	442	)))
43.8	443	)))
1.2	444
23.4	445	(((
43.8	446	(((
1.2	447	0xA9 00 00 00: Equal to AT+TTRIG=0,0. Disable timeout Alarm.
23.4	448	)))
43.8	449	)))
1.2	450
	451
	452
17.8	453	== 4.7 LEDs ==
1.2	454
25.9	455
21.7	456	(% border="1" cellspacing="10" style="background-color:#ffffcc; width:463px" %)
	457	\|=(% style="width: 184px;" %)Action\|=(% style="width: 275px;" %)LED behavior
	458	\|(% style="width:184px" %)Power On\|(% style="width:275px" %)(% style="color:green" %)GREEN on 1s, (% style="color:red" %)RED on 1s,(%%) (% style="color:blue" %)BLUE on 1s(%%)
	459	\|(% style="width:184px" %)Joined successful\|(% style="width:275px" %)(% style="color:green" %)GRENN LED (%%)on 5s
	460	\|(% style="width:184px" %)Send an uplink message\|(% style="width:275px" %)(% style="color:green" %)GREEN LED(%%) blinks once
	461	\|(% style="width:184px" %)Got a downlink message\|(% style="width:275px" %)(% style="color:blue" %)BLUE LED(%%) blinks once
1.2	462
43.9	463
48.2	464
	465
	466
21.8	467	= 5. Battery & How to replace =
	468
	469	== 5.1 Battery Type and replace ==
	470
22.3	471	(((
43.10	472	LDS02 is equipped with 2 x AAA LR03 batteries. If the batteries running low (shows 2.1v in the platform). User can buy generic AAA battery and replace it.
1.2	473
48.3	474	(% style="color:red" %)Note:
43.10	475
	476	1. The LDS02 doesn’t have any screw, use can use nail to open it by the middle.
	477	1. Make sure the direction is correct when install the AAA batteries.
22.3	478	)))
1.2	479
22.3	480	(((
48.3	481	(% style="color:red" %)Important Notice: Make sure use new AAA LR03 battery and the battery doesn't have broken surface.
22.3	482	)))
1.2	483
22.3	484	(((
	485
	486	)))
1.2	487
22.3	488	(((
1.2	489	Example of AAA LR03 batter:
22.3	490	)))
1.2	491
22.2	492	[[image:1654675278044-307.png]]
1.2	493
	494
22.4	495	== 5.2 Power Consumption Analyze ==
	496
26.6	497	(((
1.2	498	Dragino battery powered products are all run in Low Power mode. User can check the guideline from this link to calculate the estimate battery life:
26.6	499	)))
1.2	500
26.6	501	(((
1.2	502	[[https:~~/~~/www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf>>url:https://www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf]]
26.6	503	)))
1.2	504
	505
22.4	506	= 6. Use AT Command =
1.2	507
22.4	508	== 6.1 Access AT Command ==
	509
47.2	510	LDS02 supports AT Command set. User can use a USB to TTL adapter to configure LDS02 via use AT command, as below.
1.2	511
44.2	512	[[image:image-20220609085453-1.png]]
1.2	513
	514
44.3	515	(% style="background-color:yellow" %)USB to TTL <- -> LDS02
1.2	516
44.3	517	(% style="background-color:yellow" %)RX <- -> TXD
1.2	518
44.3	519	(% style="background-color:yellow" %)TX <- -> RXD
23.7	520
	521	(% style="background-color:yellow" %)GND <- -> GND
	522
24.3	523
	524	(((
44.3	525	In PC, User needs to set (% style="color:#037691" %)serial tool(%%)(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)115200(%%) to access to access serial console of LDS02. Below is the output for reference:
24.3	526	)))
1.2	527
24.3	528	(((
24.2	529	The AT Access password is (% style="color:red" %)123456.
24.3	530	)))
1.2	531
24.2	532	[[image:1654675618022-630.png]]
1.2	533
44.3	534
26.7	535	(((
24.4	536	Each AT Command need to (% style="color:red" %)add an ENTER(%%) at the end before send.
26.7	537	)))
1.2	538
26.7	539	(((
24.4	540	When entering the first command, the (% style="color:red" %)RED LED(%%) will on and user can now input AT Commands. After input all needed AT Commands, please input AT+CLPM=1 to set the device to work in Low Power mode and (% style="color:red" %)RED LED(%%) will be off.
26.7	541	)))
1.2	542
26.7	543	(((
1.2	544	More detail AT Command manual can be found at [[AT Command Manual>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDS01/]]
26.7	545	)))
1.2	546
	547
1.5	548	= 7. FAQ =
	549
	550	== 7.1 How to upgrade the image? ==
	551
44.4	552	User can upgrade the of LDS02 for bug fix, new features, or change working region. The upgrade instruction is here: [[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
1.2	553
	554
1.5	555	== 7.2 How to change the LoRa Frequency Bands/Region? ==
1.2	556
24.7	557	If user has for example US915 frequency and want to change it to AS923 frequency. User can follow the introduction for [[how to upgrade image>>\|\|anchor="H7.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
1.2	558
	559
1.5	560	== 7.3 Can I disable uplink for each event to save battery life? ==
	561
1.2	562	Yes, User can use below method to disable this:
	563
47.20	564
1.6	565	(% style="color:#4f81bd" %)via AT Command:
1.2	566
	567	AT+DISALARM=1, End node will only send packet in TDC time.
	568
1.6	569	AT+DISALARM=0, End node will send packet in TDC time or status change for door sensor.
1.2	570
47.20	571
1.6	572	(% style="color:#4f81bd" %)via LoRaWAN downlink Command:
1.2	573
	574	0xA701 : Equal to AT+DISALARM=1
	575
	576	0xA700 : Equal to AT+DISALARM=0
	577
	578
1.5	579	= 8. Order Info =
1.2	580
44.5	581	Part Number: (% style="color:blue" %)LDS02-XXX(%%)
1.2	582
1.6	583	(% style="color:blue" %)XXX:
1.2	584
1.10	585	* (% style="color:red" %)EU433(%%): frequency bands EU433
	586	* (% style="color:red" %)EU868(%%): frequency bands EU868
	587	* (% style="color:red" %)KR920(%%): frequency bands KR920
1.6	588	* (% style="color:red" %)CN470(%%): frequency bands CN470
1.10	589	* (% style="color:red" %)AS923(%%): frequency bands AS923
1.6	590	* (% style="color:red" %)AU915(%%): frequency bands AU915
1.10	591	* (% style="color:red" %)US915(%%): frequency bands US915
	592	* (% style="color:red" %)IN865(%%): frequency bands IN865
1.6	593	* (% style="color:red" %)CN779(%%): frequency bands CN779
1.2	594
47.18	595
1.4	596	= 9. Packing Info =
	597
47.13	598	(((
1.2	599	Package Includes:
47.13	600	)))
1.2	601
47.13	602	* (((
	603	LDS02 x 1
	604	)))
1.2	605
47.13	606	(((
44.7	607	Dimension and weight:
47.13	608	)))
44.6	609
47.13	610	* (((
	611	Device Size: 69.2 x 29.2 x 14.8 mm
47.19	612
	613
	614
47.13	615	)))
44.6	616
31.2	617	= 10. Support =
1.2	618
	619	* 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.
	620	* 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:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]].
	621
44.3	622

Wiki source code of LDS02 - LoRaWAN Door Sensor User Manual

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