Wiki source code of LHT65N LoRaWAN Temperature & Humidity Sensor Manual

Version 73.2 by Xiaoling on 2022/05/23 15:27

version	line-number	content
55.2	1	(% style="text-align:center" %)
56.2	2	[[image:image-20220523115324-1.jpeg\|\|height="500" width="500"]]
55.2	3
2.1	4
56.2	5	LHT65N LoRaWAN Temperature & Humidity Sensor Manual
	6
	7
	8
	9	Table of Contents：
	10
55.2	11	{{toc/}}
2.1	12
55.4	13
	14
52.2	15	= 1.Introduction =
	16
55.2	17	== 1.1 What is LHT65N Temperature & Humidity Sensor ==
52.2	18
56.3	19	(((
56.2	20	The Dragino LHT65N Temperature & Humidity sensor is a Long Range LoRaWAN Sensor. It includes a (% style="color:#4f81bd" %)built-in Temperature & Humidity sensor(%%) and has an external sensor connector to connect to an external (% style="color:#4f81bd" %)Temperature Sensor(%%).
56.3	21	)))
2.1	22
56.3	23	(((
2.1	24	The LHT65N allows users to send data and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, building automation, and so on.
56.3	25	)))
2.1	26
56.3	27	(((
6.1	28	LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
56.3	29	)))
2.1	30
56.3	31	(((
2.1	32	LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
56.3	33	)))
2.1	34
56.3	35	(((
56.2	36	LHT65N supports (% style="color:#4f81bd" %)Datalog Feature(%%). It will record the data when there is no network coverage and users can retrieve the sensor value later to ensure no miss for every sensor reading.
56.3	37	)))
2.1	38
56.3	39	(((
6.1	40	*The actual battery life depends on how often to send data, please see the battery analyzer chapter.
56.3	41	)))
2.1	42
55.2	43	== 1.2 Features ==
2.1	44
	45	* Wall mountable
	46	* LoRaWAN v1.0.3 Class A protocol
	47	* Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
	48	* AT Commands to change parameters
	49	* Remote configure parameters via LoRaWAN Downlink
15.1	50	* Firmware upgradeable via program port
6.1	51	* Built-in 2400mAh battery for up to 10 years of use.
2.1	52	* Built-in Temperature & Humidity sensor
	53	* Optional External Sensors
6.1	54	* Tri-color LED to indicate working status
2.1	55	* Datalog feature
	56
55.2	57	== 1.3 Specification ==
2.1	58
56.3	59	(((
2.1	60	Built-in Temperature Sensor:
56.3	61	)))
2.1	62
56.3	63	* (((
	64	Resolution: 0.01 °C
	65	)))
	66	* (((
	67	Accuracy Tolerance : Typ ±0.3 °C
	68	)))
	69	* (((
	70	Long Term Drift: < 0.02 °C/yr
	71	)))
	72	* (((
	73	Operating Range: -40 ~~ 85 °C
	74	)))
2.1	75
56.3	76	(((
2.1	77	Built-in Humidity Sensor:
56.3	78	)))
2.1	79
56.3	80	* (((
	81	Resolution: 0.04 %RH
	82	)))
	83	* (((
	84	Accuracy Tolerance : Typ ±3 %RH
	85	)))
	86	* (((
	87	Long Term Drift: < 0.02 °C/yr
	88	)))
	89	* (((
	90	Operating Range: 0 ~~ 96 %RH
	91	)))
2.1	92
56.3	93	(((
6.1	94	External Temperature Sensor:
56.3	95	)))
2.1	96
56.3	97	* (((
	98	Resolution: 0.0625 °C
	99	)))
	100	* (((
	101	±0.5°C accuracy from -10°C to +85°C
	102	)))
	103	* (((
	104	±2°C accuracy from -55°C to +125°C
	105	)))
	106	* (((
	107	Operating Range: -55 °C ~~ 125 °C
	108	)))
2.1	109
55.2	110	= 2. Connect LHT65N to IoT Server =
18.1	111
55.2	112	== 2.1 How does LHT65N work? ==
18.1	113
56.4	114	(((
18.1	115	LHT65N is configured as LoRaWAN OTAA Class A mode by default. Each LHT65N is shipped with a worldwide unique set of OTAA keys. To use LHT65N in a LoRaWAN network, first, we need to put the OTAA keys in LoRaWAN Network Server and then activate LHT65N.
56.4	116	)))
18.1	117
56.4	118	(((
18.1	119	If LHT65N is under the coverage of this LoRaWAN network. LHT65N can join the LoRaWAN network automatically. After successfully joining, LHT65N will start to measure environment temperature and humidity, and start to transmit sensor data to the LoRaWAN server. The default period for each uplink is 20 minutes.
56.4	120	)))
18.1	121
55.2	122	== 2.2 How to Activate LHT65N? ==
18.1	123
	124	The LHT65N has two working modes:
	125
	126	* Deep Sleep Mode: LHT65N doesn’t have any LoRaWAN activation. This mode is used for storage and shipping to save battery life.
19.1	127	* Working Mode: In this mode, LHT65N works as LoRaWAN Sensor mode to Join LoRaWAN network and send out the sensor data to the server. Between each sampling/tx/rx periodically, LHT65 will be in STOP mode (IDLE mode), in STOP mode, LHT65N has the same power consumption as Deep Sleep mode.
18.1	128
56.5	129	(((
18.1	130	The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
56.5	131	)))
18.1	132
	133	[[image:image-20220515123819-1.png\|\|height="379" width="317"]]
	134
57.4	135	(% border="1" style="background-color:#ffffcc; color:green; width:739px" %)
	136	\|Behavior on ACT\|Function\|(% style="width:424px" %)Action
	137	\|Pressing ACT between 1s < time < 3s\|Test uplink status\|(% style="width:424px" %)If LHT65N is already Joined to the LoRaWAN network, LHT65N will send an uplink packet, if LHT65N has an external sensor connected, blue led will blink once. If LHT65N has no external sensor, red led will blink once.
	138	\|Pressing ACT for more than 3s\|Active Device\|(% style="width:424px" %)green led will fast blink 5 times, LHT65N will enter working mode and start to JOIN LoRaWAN network. green led will solid turn on for 5 seconds after join in network.
	139	\|Fast press ACT 5 times\|Deactivate Device\|(% style="width:424px" %)red led will solid on for 5 seconds. This means LHT65N is in Deep Sleep Mode.
18.1	140
55.2	141	== 2.3 Example to join LoRaWAN network ==
32.1	142
	143	(% class="wikigeneratedid" %)
	144	This section shows an example of how to join the TTN V3 LoRaWAN IoT server. Use with other LoRaWAN IoT servers is of a similar procedure.
	145
	146	(% class="wikigeneratedid" %)
	147	[[image:image-20220522232442-1.png\|\|height="387" width="648"]]
	148
	149	Assume the LPS8N is already set to connect to [[TTN V3 network>>url:https://eu1.cloud.thethings.network]], So it provides network coverage for LHT65N. Next we need to add the LHT65N device in TTN V3:
	150
	151
55.3	152	=== 2.3.1 Step 1: Create Device n TTN ===
32.1	153
	154	Create a device in TTN V3 with the OTAA keys from LHT65N.
	155
	156	Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
	157
	158	[[image:image-20220522232812-2.png\|\|height="219" width="279"]]
	159
	160	User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
	161
	162	Add APP EUI in the application.
	163
	164	[[image:image-20220522232916-3.png]]
	165
	166	[[image:image-20220522232932-4.png]]
	167
	168	[[image:image-20220522232954-5.png]]
	169
	170	Note: LHT65N use same payload as LHT65.
	171
	172	[[image:image-20220522233026-6.png]]
	173
	174
	175	Input APP EUI, APP KEY and DEV EUI:
	176
	177	[[image:image-20220522233118-7.png]]
	178
	179
55.2	180	=== 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
32.1	181
	182	Use ACT button to activate LHT65N and it will auto-join to the TTN V3 network. After join success, it will start to upload sensor data to TTN V3 and user can see in the panel.
	183
57.3	184	[[image:image-20220522233300-8.png\|\|height="219" width="722"]]
32.1	185
	186
55.3	187	== 2.4 Uplink Payload ==
35.1	188
57.2	189	The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and (% style="color:#4f81bd" %)every 20 minutes(%%) send one uplink by default.
35.1	190
57.2	191	After each uplink, the (% style="color:blue" %)BLUE LED(%%) will blink once.
35.1	192
	193
57.8	194	(% border="1" style="background-color:#ffffcc; color:green; width:428px" %)
57.10	195	\|(% style="width:106px" %)(((
	196	Size(bytes)
	197	)))\|(% style="width:46px" %)(((
	198	2
	199	)))\|(% style="width:104px" %)(((
	200	2
	201	)))\|(% style="width:80px" %)(((
	202	2
	203	)))\|(% style="width:51px" %)(((
	204	1
	205	)))\|(% style="width:35px" %)(((
	206	4
	207	)))
	208	\|(% style="width:106px" %)(((
	209	Value
	210	)))\|(% style="width:46px" %)(((
	211	[[BAT>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.2BAT-BatteryInfo]]
	212	)))\|(% style="width:104px" %)(((
	213	(((
57.8	214	[[Built-In>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.3Built-inTemperature]]
57.10	215	)))
35.1	216
57.10	217	(((
57.8	218	[[Temperature>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.3Built-inTemperature]]
57.10	219	)))
57.8	220	)))\|(% style="width:80px" %)(((
57.10	221	(((
57.8	222	[[Built-in>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.4Built-inHumidity]]
57.10	223	)))
57.8	224
57.10	225	(((
57.8	226	[[Humidity>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.4Built-inHumidity]]
57.10	227	)))
	228	)))\|(% style="width:51px" %)(((
	229	[[Ext>>path:#Extension_Sensor]] #
	230	)))\|(% style="width:35px" %)(((
	231	[[Ext value>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.6Extvalue]]
	232	)))
57.8	233
35.1	234	* The First 6 bytes: has fix meanings for every LHT65N.
	235	* The 7th byte (EXT #): defines the external sensor model.
	236	* The 8^^th^^ ~~ 11^^th^^ byte: the value for external sensor value. The definition is based on external sensor type. (If EXT=0, there won’t be these four bytes.)
	237
55.4	238	=== 2.4.1 Decoder in TTN V3 ===
35.1	239
	240	When the uplink payload arrives TTNv3, it shows HEX format and not friendly to read. We can add LHT65N decoder in TTNv3 for friendly reading.
	241
	242	Below is the position to put the decoder and LHT65N decoder can be download from here:
	243
42.1	244	[[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0 >>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0]]
35.1	245
57.4	246	[[image:image-20220522234118-10.png\|\|height="353" width="729"]]
35.1	247
55.4	248	=== 2.4.2 BAT-Battery Info ===
42.1	249
	250	These two bytes of BAT include the battery state and the actually voltage
	251
57.8	252	(% border="1" style="background-color:#ffffcc; color:green; width:502px" %)
57.9	253	\|(% style="width:75px" %)(((
	254	Bit(bit)
	255	)))\|(% style="width:259px" %)(((
	256	[15:14]
	257	)))\|(% style="width:164px" %)(((
	258	[13:0]
	259	)))
	260	\|(% style="width:75px" %)(((
	261	Value
	262	)))\|(% style="width:259px" %)(((
	263	(((
42.1	264	BAT Status
57.9	265	)))
42.1	266
57.9	267	(((
42.1	268	00(b): Ultra Low ( BAT <= 2.50v)
57.9	269	)))
42.1	270
57.9	271	(((
42.1	272	01(b): Low (2.50v <=BAT <= 2.55v)
57.9	273	)))
42.1	274
57.9	275	(((
42.1	276	10(b): OK (2.55v <= BAT <=2.65v)
57.9	277	)))
42.1	278
57.9	279	(((
42.1	280	11(b): Good (BAT >= 2.65v)
57.9	281	)))
	282	)))\|(% style="width:164px" %)(((
	283	Actually BAT voltage
	284	)))
42.1	285
57.5	286	[[image:image-20220522235639-1.png\|\|height="139" width="727"]]
42.1	287
	288	Check the battery voltage for LHT65N.
	289
	290	* BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
	291	* Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
	292
55.4	293	=== 2.4.3 Built-in Temperature ===
42.1	294
57.5	295	[[image:image-20220522235639-2.png\|\|height="138" width="722"]]
42.1	296
	297	* Temperature: 0x0ABB/100=27.47℃
	298
	299	[[image:image-20220522235639-3.png]]
	300
	301	* Temperature: (0xF5C6-65536)/100=-26.18℃
	302
55.4	303	=== 2.4.4 Built-in Humidity ===
42.1	304
57.5	305	[[image:image-20220522235639-4.png\|\|height="138" width="722"]]
42.1	306
	307	* Humidity: 0x025C/10=60.4%
	308
55.4	309	=== 2.4.5 Ext # ===
42.1	310
	311	Bytes for External Sensor:
	312
57.5	313	(% border="1" style="background-color:#ffffcc; color:green; width:473px" %)
	314	\|(% style="width:139px" %)EXT # Value\|(% style="width:331px" %)External Sensor Type
	315	\|(% style="width:139px" %)0x01\|(% style="width:331px" %)Sensor E3, Temperature Sensor
	316	\|(% style="width:139px" %)0x09\|(% style="width:331px" %)Sensor E3, Temperature Sensor, Datalog Mod
42.1	317
55.4	318	=== 2.4.6 Ext value ===
42.1	319
55.4	320	==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
42.1	321
	322	[[image:image-20220522235639-5.png]]
	323
	324	* DS18B20 temp=0x0ADD/100=27.81℃
	325
	326	The last 2 bytes of data are meaningless
	327
	328	[[image:image-20220522235639-6.png]]
	329
	330	* External temperature= (0xF54F-65536)/100=-27.37℃
	331
57.5	332	(((
42.1	333	The last 2 bytes of data are meaningless
57.5	334	)))
42.1	335
57.5	336	(((
42.1	337	If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
57.5	338	)))
42.1	339
	340
55.4	341	==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
42.1	342
	343	Timestamp mode is designed for LHT65N with E3 probe, it will send the uplink payload with Unix timestamp. With the limitation of 11 bytes (max distance of AU915/US915/AS923 band), the time stamp mode will be lack of BAT voltage field, instead, it shows the battery status. The payload is as below:
	344
73.2	345	(% border="1" style="background-color:#ffffcc; color:green; width:568px" %)
	346	\|(% style="width:96px" %)Size(bytes)\|(% style="width:71px" %)2\|(% style="width:99px" %)2\|(% style="width:132px" %)2\|(% style="width:54px" %)1\|(% style="width:64px" %)4
	347	\|(% style="width:96px" %)(((
	348	Value
	349	)))\|(% style="width:71px" %)(((
	350	[[External temperature>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H4.2SetExternalSensorMode]]
	351	)))\|(% style="width:99px" %)(((
	352	(((
57.5	353	[[Built-In>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.3Built-inTemperature]]
73.2	354	)))
42.1	355
73.2	356	(((
57.5	357	[[Temperature>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.3Built-inTemperature]]
73.2	358	)))
	359	)))\|(% style="width:132px" %)(((
	360	(((
57.5	361	BAT Status &
73.2	362	)))
42.1	363
73.2	364	(((
	365	[[Built-in Humidity>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.4Built-inHumidity]]
	366	)))
	367	)))\|(% style="width:54px" %)(((
	368	Status & Ext
	369	)))\|(% style="width:64px" %)(((
	370	(((
57.11	371	[[Unix Time Stamp>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H4.1SetTransmitIntervalTime]]
42.1	372	)))
73.2	373	)))
42.1	374
57.6	375	* Battery status & (% class="wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink" %)Built-in Humidity(%%)
42.1	376
57.11	377	(% border="1" style="background-color:#ffffcc; color:green; width:469px" %)
	378	\|(% style="width:65px" %)Bit(bit)\|(% style="width:267px" %)[15:14]\|(% style="width:134px" %)[11:0]
	379	\|(% style="width:65px" %)Value\|(% style="width:267px" %)(((
42.1	380	BAT Status
	381
	382	00(b): Ultra Low ( BAT <= 2.50v)
	383
	384	01(b): Low (2.50v <=BAT <= 2.55v)
	385
	386	10(b): OK (2.55v <= BAT <=2.65v)
	387
	388	11(b): Good (BAT >= 2.65v)
57.11	389	)))\|(% style="width:134px" %)(((
57.5	390	[[Built-in Humidity>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.4Built-inHumidity]]
42.1	391
	392
	393	)))
	394
	395	* Status & Ext Byte
	396
73.2	397	[[image:image-20220523152434-16.png]]
42.1	398
	399	* Poll Message Flag: 1: This message is a poll message reply, 0: means this is a normal uplink.
	400	* Sync time OK: 1: Set time ok，0: N/A. After time SYNC request is sent, LHT65N will set this bit to 0 until got the time stamp from the application server.
	401	* Unix Time Request:1: Request server downlink Unix time, 0 : N/A. In this mode, LHT65N will set this bit to 1 every 10 days to request a time SYNC. (AT+SYNCMOD to set this)
	402
55.4	403	== 2.5 Show data on Datacake ==
42.1	404
47.1	405	Datacake IoT platform provides a human-friendly interface to show the sensor data, once we have sensor data in TTN V3, we can use Datacake to connect to TTN V3 and see the data in Datacake. Below are the steps:
	406
57.6	407	(((
47.1	408	Step 1: Be sure that your device is programmed and properly connected to the LoRaWAN network.
57.6	409	)))
47.1	410
57.6	411	(((
47.1	412	Step 2: Configure your Application to forward data to Datacake you will need to add integration. Go to TTN V3 Console ~-~-> Applications ~-~-> Integrations ~-~-> Add Integrations.
57.6	413	)))
47.1	414
57.6	415	(((
47.1	416	Add Datacake:
57.6	417	)))
47.1	418
	419	[[image:image-20220523000825-7.png\|\|height="262" width="583"]]
	420
	421
	422	Select default key as Access Key:
	423
	424	[[image:image-20220523000825-8.png\|\|height="453" width="406"]]
	425
	426	In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/]]) , add LHT65 device.
	427
	428	[[image:image-20220523000825-9.png\|\|height="366" width="392"]]
	429
57.12	430	[[image:image-20220523000825-10.png\|\|height="413" width="728"]]
47.1	431
55.4	432	== 2.6 Datalog Feature ==
47.1	433
51.1	434	This feature is always enabled. When user wants to retrieve the sensor value, he can send a poll command from the IoT platform to ask LHT65N to send the value in the required time slot.
	435
55.4	436	=== 2.6.1 Unix TimeStamp ===
51.1	437
	438	LHT65N uses Unix TimeStamp format based on
	439
	440	[[image:image-20220523001219-11.png\|\|height="97" width="627"]]
	441
	442
57.6	443	(((
51.1	444	User can get this time from link: [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
57.6	445	)))
51.1	446
57.6	447	(((
51.1	448	Below is the converter example
57.6	449	)))
51.1	450
57.11	451	[[image:image-20220523001219-12.png\|\|height="298" width="720"]]
51.1	452
	453	So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
	454
55.4	455	=== 2.6.2 Set Device Time ===
51.1	456
57.11	457	(((
51.1	458	There are two ways to set device’s time:
57.11	459	)))
51.1	460
57.11	461	(((
51.1	462	~1. Through LoRaWAN MAC Command (Default settings)
57.11	463	)))
51.1	464
57.11	465	(((
51.1	466	User need to set SYNCMOD=1 to enable sync time via MAC command.
57.11	467	)))
51.1	468
57.11	469	(((
51.1	470	Once LHT65N Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to LHT65N. If LHT65N fails to get the time from the server, LHT65N will use the internal time and wait for next time request (AT+SYNCTDC to set the time request period, default is 10 days).
57.11	471	)))
51.1	472
57.11	473	(((
51.1	474	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.
57.11	475	)))
51.1	476
57.11	477	(((
	478
	479	)))
51.1	480
57.11	481	(((
51.1	482	2. Manually Set Time
57.11	483	)))
51.1	484
57.11	485	(((
51.1	486	User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
57.11	487	)))
51.1	488
55.4	489	=== 2.6.3 Poll sensor value ===
51.1	490
	491	User can poll sensor value based on timestamps from the server. Below is the downlink command.
	492
73.2	493	[[image:image-20220523152302-15.png]]
51.1	494
57.12	495	(((
51.1	496	Timestamp start and Timestamp end use Unix TimeStamp format as mentioned above. Devices will reply with all data log during this time period, use the uplink interval.
57.12	497	)))
51.1	498
57.12	499	(((
	500	For example, downlink command 31 5FC5F350 5FC6 0160 05
	501	)))
51.1	502
57.12	503	(((
51.1	504	Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
57.12	505	)))
51.1	506
57.12	507	(((
51.1	508	Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
57.12	509	)))
51.1	510
	511
55.4	512	=== 2.6.4 Datalog Uplink payload ===
51.1	513
	514	The Datalog poll reply uplink will use below payload format.
	515
57.13	516	(((
58.2	517	Retrieval data payload
57.13	518	)))
51.1	519
58.6	520	(% border="1" style="background-color:#ffffcc; color:green; width:545px" %)
	521	\|(% style="width:93px" %)(((
	522	Size(bytes)
	523	)))\|(% style="width:71px" %)(((
	524	2
	525	)))\|(% style="width:102px" %)(((
	526	2
	527	)))\|(% style="width:86px" %)(((
	528	2
	529	)))\|(% style="width:90px" %)(((
	530	1
	531	)))\|(% style="width:85px" %)(((
	532	4
	533	)))
	534	\|(% style="width:93px" %)(((
	535	Value
	536	)))\|(% style="width:71px" %)(((
	537	[[External sensor data>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.6Extvalue]]
	538	)))\|(% style="width:102px" %)(((
	539	(((
	540	[[Built In>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.3Built-inTemperature]]
	541	)))
	542
	543	(((
	544	[[Temperature>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.3Built-inTemperature]]
	545	)))
	546	)))\|(% style="width:86px" %)(((
	547	(((
	548	[[Built-in>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.4Built-inHumidity]]
	549	)))
	550
	551	(((
	552	[[Humidity>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.4Built-inHumidity]]
	553	)))
	554	)))\|(% style="width:90px" %)(((
	555	[[Poll message flag & Ext>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.6.4DatalogUplinkpayload]]
	556	)))\|(% style="width:85px" %)(((
	557	(((
57.13	558	[[Unix Time Stamp>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.6.1UnixTimeStamp]]
58.6	559	)))
51.1	560
58.6	561	(((
51.1	562
	563	)))
58.6	564	)))
51.1	565
58.2	566	Poll message flag & Ext
51.1	567
73.2	568	[[image:image-20220523152208-14.png]]
51.1	569
58.8	570	(((
58.2	571	(((
51.1	572	Poll Message Flag: 1: This message is a poll message reply.
58.2	573	)))
73.2	574	)))
51.1	575
58.2	576	* (((
73.2	577	(((
58.2	578	Poll Message Flag is set to 1.
	579	)))
73.2	580	)))
58.2	581	* (((
73.2	582	(((
58.2	583	Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
	584	)))
73.2	585	)))
51.1	586
58.2	587	(((
73.2	588	(((
51.1	589	For example, in US915 band, the max payload for different DR is:
58.2	590	)))
73.2	591	)))
51.1	592
58.2	593	(((
73.2	594	(((
58.2	595	a) DR0: max is 11 bytes so one entry of data
	596	)))
73.2	597	)))
51.1	598
58.2	599	(((
73.2	600	(((
58.2	601	b) DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
	602	)))
73.2	603	)))
51.1	604
58.2	605	(((
73.2	606	(((
58.2	607	c) DR2: total payload includes 11 entries of data
	608	)))
73.2	609	)))
51.1	610
58.2	611	(((
73.2	612	(((
58.2	613	d) DR3: total payload includes 22 entries of data.
	614	)))
73.2	615	)))
51.1	616
58.2	617	(((
73.2	618	(((
51.1	619	If devise doesn’t have any data in the polling time. Device will uplink 11 bytes of 0
58.2	620	)))
73.2	621	)))
51.1	622
	623
	624	Example:
	625
	626	If LHT65N has below data inside Flash:
	627
58.2	628	[[image:image-20220523144455-1.png\|\|height="335" width="735"]]
	629
58.4	630	If user sends below downlink command: (% style="background-color:yellow" %)3160065F9760066DA705
51.1	631
	632	Where : Start time: 60065F97 = time 21/1/19 04:27:03
	633
	634	Stop time 60066DA7= time 21/1/19 05:27:03
	635
	636
	637	LHT65N will uplink this payload.
	638
55.4	639	[[image:image-20220523001219-13.png\|\|height="421" width="727"]]
51.1	640
	641	7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
	642
	643	Where the first 11 bytes is for the first entry:
	644
	645	7FFF089801464160065F97
	646
	647	Ext sensor data=0x7FFF/100=327.67
	648
	649	Temp=0x0898/100=22.00
	650
	651	Hum=0x0146/10=32.6
	652
	653	poll message flag & Ext=0x41,means reply data,Ext=1
	654
	655	Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
	656
55.4	657	== 2.7 Alarm Mode ==
51.1	658
	659	Alarm mode feature is added since firmware v1.5. When device is in Alarm mode, it will check the built-in sensor temperature in a short interval. If the temperature exceeds the pre-configure range, it will send an uplink immediately.
	660
58.10	661	(% style="color:red" %)Note: Alarm mode will increase a little big the power consumption, we recommend extending the normal reading time when enabling this feature.
51.1	662
58.10	663	AT Commands for Alarm mode:
51.1	664
58.10	665	(% class="box infomessage" %)
	666	(((
51.1	667	AT+WMOD=1: Enable/Disable Alarm Mode. (0:Disable, 1: Enable)
58.10	668	)))
51.1	669
58.10	670	(% class="box infomessage" %)
	671	(((
51.1	672	AT+CITEMP=1: The interval to check the temperature for Alarm. (Unit: minute)
58.10	673	)))
51.1	674
55.4	675	== 2.8 LED Indicator ==
18.1	676
58.10	677	(((
19.1	678	The LHT65N has a triple color LED which for easy shows different stage.
58.10	679	)))
19.1	680
58.10	681	(((
19.1	682	While pressing ACT button, the LED will work as per LED status with ACT button.
58.10	683	)))
19.1	684
58.10	685	(((
19.1	686	In a normal working state:
58.10	687	)))
19.1	688
58.10	689	* (((
	690	For each uplink, the BLUE LED or RED LED will blink once.
	691	)))
	692	* (((
	693	BLUE LED when an external sensor is connected
	694	)))
	695	* (((
	696	RED LED when an external sensor is not connected
	697	)))
	698	* (((
	699	For each success downlink, the PURPLE LED will blink once
	700	)))
19.1	701
23.1	702	----
19.1	703
55.4	704	== 2.9 Installation ==
21.1	705
52.1	706	[[image:image-20220516231650-1.png\|\|height="436" width="428"]]
21.1	707
55.4	708	= 3. Sensors & Accessories =
21.1	709
55.4	710	== 3.1 E3 Temperature Probe ==
21.1	711
14.1	712	[[image:image-20220515080154-4.png\|\|height="182" width="161"]] [[image:image-20220515080330-5.png\|\|height="201" width="195"]]
	713
	714
	715	With Temperature sensor with 2 meters cable long
	716
	717	* Resolution: 0.0625 °C
	718	* ±0.5°C accuracy from -10°C to +85°C
	719	* ±2°C accuracy from -55°C to +125°C
	720	* Operating Range: -40 ~~ 125 °C
	721	* -55°C to 125°C
	722	* Working voltage 2.35v ~~ 5v
	723
55.4	724	= 4. Configure LHT65N via AT Command or LoRaWAN Downlink =
52.1	725
	726	Use can configure LHT65N via AT Command or LoRaWAN Downlink.
	727
	728	* AT Command Connection: See [[FAQ>>path:#AT_COMMAND]].
	729	* LoRaWAN Downlink instruction for different platforms:
	730
	731	[[http:~~/~~/wiki.dragino.com/index.php?title=Main_Page#Use_Note_for_Server>>url:http://wiki.dragino.com/index.php?title=Main_Page#Use_Note_for_Server]]
	732
	733	There are two kinds of commands to configure LHT65N, they are:
	734
58.10	735	(% style="color:#4f81bd" %)* General Commands.
52.1	736
	737	These commands are to configure:
	738
	739	* General system settings like: uplink interval.
	740	* LoRaWAN protocol & radio-related commands.
	741
	742	They are the same for all Dragino Devices which supports DLWS-005 LoRaWAN Stack(Note~~). These commands can be found on the wiki:
	743
	744	[[http:~~/~~/wiki.dragino.com/index.php?title=End_Device_Downlink_Command>>url:http://wiki.dragino.com/index.php?title=End_Device_Downlink_Command]]
	745
58.10	746	(% style="color:#4f81bd" %)* Commands special design for LHT65N
52.1	747
	748	These commands are only valid for LHT65N, as below:
	749
55.4	750	== 4.1 Set Transmit Interval Time ==
52.1	751
	752	Feature: Change LoRaWAN End Node Transmit Interval.
	753
	754	AT Command: AT+TDC
	755
66.2	756	[[image:image-20220523150701-2.png]]
52.1	757
	758	Downlink Command: 0x01
	759
	760	Format: Command Code (0x01) followed by 3 bytes time value.
	761
	762	If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
	763
66.2	764	* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
	765	* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
52.1	766
55.4	767	== 4.2 Set External Sensor Mode ==
52.1	768
	769	Feature: Change External Sensor Mode.
	770
	771	AT Command: AT+EXT
	772
66.2	773	[[image:image-20220523150759-3.png]]
52.1	774
	775	Downlink Command: 0xA2
	776
	777	Total bytes: 2 ~~ 5 bytes
	778
66.2	779	Example:
52.1	780
	781	* 0xA201: Set external sensor type to E1
	782	* 0xA209: Same as AT+EXT=9
	783	* 0xA20702003c,Same as AT+SETCNT=60
	784
55.4	785	== 4.3 Enable/Disable uplink Temperature probe ID ==
52.1	786
	787	Feature: If PID is enabled, device will send the temperature probe ID on:
	788
	789	* First Packet after OTAA Join
	790	* Every 24 hours since the first packet.
	791
	792	PID is default set to disable (0)
	793
	794	AT Command:
	795
66.2	796	[[image:image-20220523150928-4.png]]
52.1	797
	798	Downlink Command:
	799
66.2	800	* 0xA800 ~-~-> AT+PID=0
	801	* 0xA801 ~-~-> AT+PID=1
52.1	802
55.4	803	== 4.4 Set Password ==
52.1	804
	805	Feature: Set device password, max 9 digits
	806
	807	AT Command: AT+PWORD
	808
66.2	809	[[image:image-20220523151052-5.png]]
52.1	810
	811	Downlink Command:
	812
	813	No downlink command for this feature.
	814
55.4	815	== 4.5 Quit AT Command ==
52.1	816
	817	Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
	818
	819	AT Command: AT+DISAT
	820
66.2	821	[[image:image-20220523151132-6.png]]
52.1	822
	823	Downlink Command:
	824
	825	No downlink command for this feature.
	826
55.4	827	== 4.6 Set to sleep mode ==
52.1	828
	829	Feature: Set device to sleep mode
	830
	831	AT Command: AT+SLEEP
	832
66.2	833	[[image:image-20220523151218-7.png]]
52.1	834
	835	Downlink Command:
	836
	837	* There is no downlink command to set to Sleep mode.
	838
55.4	839	== 4.7 Set system time ==
52.1	840
	841	Feature: Set system time, unix format. [[See here for format detail.>>path:#TimeStamp]]
	842
	843	AT Command:
	844
66.2	845	[[image:image-20220523151253-8.png]]
52.1	846
	847	Downlink Command:
	848
	849	0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
	850
55.4	851	== 4.8 Set Time Sync Mode ==
52.1	852
	853	Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
	854
	855	SYNCMOD is set to 1 by default. If user want to set a different time from LoRaWAN server, user need to set this to 0.
	856
	857	AT Command:
	858
66.2	859	[[image:image-20220523151336-9.png]]
52.1	860
	861	Downlink Command:
	862
	863	0x28 01 ~/~/ Same As AT+SYNCMOD=1
	864
	865	0x28 00 ~/~/ Same As AT+SYNCMOD=0
	866
55.4	867	== 4.9 Set Time Sync Interval ==
52.1	868
	869	Feature: Define System time sync interval. SYNCTDC default value: 10 days.
	870
	871	AT Command:
	872
70.2	873	[[image:image-20220523151411-10.png]]
52.1	874
	875	Downlink Command:
	876
	877	0x29 0A ~/~/ Same as AT+SYNCTDC=0x0A
	878
55.4	879	== 4.10 Print data entries base on page. ==
52.1	880
	881	Feature: Print the sector data from start page to stop page (max is 416 pages).
	882
	883	AT Command: AT+PDTA
	884
70.2	885	[[image:image-20220523151450-11.png]]
52.1	886
	887	Downlink Command:
	888
	889	No downlink commands for feature
	890
55.4	891	== 4.11 Print last few data entries. ==
52.1	892
	893	Feature: Print the last few data entries
	894
	895	AT Command: AT+PLDTA
	896
70.2	897	[[image:image-20220523151524-12.png]]
52.1	898
	899	Downlink Command:
	900
	901	No downlink commands for feature
	902
55.4	903	== 4.12 Clear Flash Record ==
52.1	904
	905	Feature: Clear flash storage for data log feature.
	906
	907	AT Command: AT+CLRDTA
	908
70.2	909	[[image:image-20220523151556-13.png]]
52.1	910
	911	Downlink Command: 0xA3
	912
	913	* Example: 0xA301 ~/~/Same as AT+CLRDTA
	914
55.4	915	= 5. Battery & How to replace =
52.1	916
55.4	917	== 5.1 Battery Type ==
11.1	918
	919	LHT65N is equipped with a 2400mAH Li-MnO2 (CR17505) battery . The battery is an un-rechargeable battery with low discharge rate targeting for up to 8~~10 years use. This type of battery is commonly used in IoT devices for long-term running, such as water meters.
	920
73.2	921	(((
11.1	922	The discharge curve is not linear so can’t simply use percentage to show the battery level. Below is the battery performance.
14.1	923	[[image:image-20220515075034-1.png\|\|height="208" width="644"]]
73.2	924	)))
11.1	925
73.2	926	(((
11.1	927	The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
	928
73.2	929	)))
11.1	930
55.4	931	== 5.2 Replace Battery ==
11.1	932
	933	LHT65N has two screws on the back, Unscrew them, and changing the battery inside is ok. The battery is a general CR17450 battery. Any brand should be ok.
	934
	935	[[image:image-20220515075440-2.png\|\|height="338" width="272"]][[image:image-20220515075625-3.png\|\|height="193" width="257"]]
	936
55.4	937	== 5.3 Battery Life Analyze ==
11.1	938
73.2	939	(((
11.1	940	Dragino battery-powered products are all run in Low Power mode. User can check the guideline from this link to calculate the estimated battery life:
	941	https:~/~/www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf
73.2	942	)))
11.1	943
55.4	944	= 6. Order Info =
11.1	945
73.2	946	(((
	947	Part Number: (% style="color:#4f81bd" %) LHT65N-XX
	948	)))
2.1	949
73.2	950	(((
	951	(% style="color:#4f81bd" %)XX (%%): The default frequency band
	952	)))
2.1	953
73.2	954	* (((
	955	(% style="color:#4f81bd" %) AS923(%%): LoRaWAN AS923 band
	956	)))
	957	* (((
	958	(% style="color:#4f81bd" %) AU915(%%): LoRaWAN AU915 band
	959	)))
	960	* (((
	961	(% style="color:#4f81bd" %) EU433(%%): LoRaWAN EU433 band
	962	)))
	963	* (((
	964	(% style="color:#4f81bd" %) EU868(%%): LoRaWAN EU868 band
	965	)))
	966	* (((
	967	(% style="color:#4f81bd" %) KR920(%%): LoRaWAN KR920 band
	968	)))
	969	* (((
	970	(% style="color:#4f81bd" %) US915(%%): LoRaWAN US915 band
	971	)))
	972	* (((
	973	(% style="color:#4f81bd" %) IN865(%%): LoRaWAN IN865 band
	974	)))
	975	* (((
	976	(% style="color:#4f81bd" %) CN470(%%): LoRaWAN CN470 band
	977	)))
4.1	978
73.2	979	(((
	980	(% style="color:#4f81bd" %)YY(%%): Sensor Accessories
	981	)))
14.1	982
73.2	983	* (((
	984	(% style="color:#4f81bd" %)E3(%%): External Temperature Probe
	985	)))
14.1	986
55.4	987	= 7. Packing Info =
4.1	988
73.2	989	(((
4.1	990	Package Includes:
73.2	991	)))
4.1	992
73.2	993	* (((
	994	LHT65N Temperature & Humidity Sensor x 1
	995	)))
	996	* (((
	997	Program cable x 1
	998	)))
	999	* (((
	1000	Optional external sensor
	1001	)))
4.1	1002
73.2	1003	(((
4.1	1004	Dimension and weight:
73.2	1005	)))
4.1	1006
73.2	1007	* (((
	1008	Device Size: 13.5 x 7 x 3 cm
	1009	)))
	1010	* (((
	1011	Device Weight: 105g
	1012	)))
	1013	* (((
	1014	Package Size / pcs : 14.5 x 8 x 5 cm
	1015	)))
	1016	* (((
	1017	Weight / pcs : 170g
	1018	)))
4.1	1019
55.4	1020	= 8. FCC Warning =
7.1	1021
73.2	1022	(((
7.1	1023	This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
73.2	1024	)))
7.1	1025
73.2	1026	(((
55.4	1027	(1) This device may not cause harmful interference；
73.2	1028	)))
7.1	1029
73.2	1030	(((
55.4	1031	(2) this device must accept any interference received, including interference that may cause undesired operation.
73.2	1032	)))

Wiki source code of LHT65N LoRaWAN Temperature & Humidity Sensor Manual

Applications